Upload
others
View
1
Download
0
Embed Size (px)
Citation preview
Table of Contents
www.maximintegrated.comMobile Power Product Guide
2
3 Fuel Gauges, Chargers, Battery Monitoring, and USB Management
11 Multifunction PMICs
14 Single-Function Step-Up/Down DC-DCs and LDOs
19 Selector Guide and Tables
www.maximintegrated.com Mobile Power Product Guide
3
Fuel Gauge Reports Battery State of Charge Accurately and Maximizes Battery LifeModelGauge™ Algorithm Eliminates Current-Sense Resistor and Other External Components to Save Cost and Space
ModelGauge m3 IC Accurately Reports Battery Capacity from System Side and Maximizes Battery LifeThe MAX17047 and MAX17050 Improve Coulomb Counting to Provide the Industry’s Best Accuracy • Load, temperature, and age compensation increase accuracy
• Continuous learning eliminates sudden SOC corrections
• Simple design reduces implementation cost
• Low component count saves board space
• Calibration-free to simplify manufacturing
• Maximize runtime with the industry's lowest supply current (4μA hibernate, 23μA active)
• Low-battery alert extends battery standby time and reduces software complexities
ONLY ONE EXTERNAL
COMPONENT
SYSTEMµP
MAX17048
VDD ALRT
SDA
SCL
CELL
QSTRT
CTG
GND
-10
-5
0
5
10
ERRO
R (%
)
0
25
50
75
100
SOC
(%
)
SOC ERROR REFERENCE SOC SOC
0 10 20 TIME (hr)
Competition’s 7% Error
SUDDEN JUMPS IN SOC -10
-5
0
5
10
ERRO
R (%
)
0
25
50
75
100
SOC
(%
)
SOC ERROR REFERENCE SOC SOC
0 10 20 TIME (hr)
ModelGauge m3 2% Error (MAX17047/MAX17050)
vs.
www.maximintegrated.comMobile Power Product Guide
4
Safety, Security, and Accuracy for 1-Cell Li+ Batteries in a Tiny TDFNThe DS2784 delivers a complete fuel-gauging solution in a tiny 15mm2 footprint. It integrates a stand-alone fuel gauge is a single-cell Li+ protector and a SHA-1-based challenge-response authentication system.
• Li+ safety monitor with programmable thresholds for overvoltage and overcurrent
• SHA-1 security with 64-bit challenge, 64-bit secret, and 32-bit internal bus
• Precision voltage, temperature, and current measurements
• Available capacity reported as percent remaining and mAh remaining
• Gain and tempco calibration for using low-cost sense resistors
• 32-byte parameter EEPROM, 16-byte user EEPROM
• Tiny, 3mm x 5mm, lead-free, 14-pin TDFN package
Part 64-BitROM Interface Memory
(Bytes)Fuel
Gauge Li+ Protector Package(mm x mm)
DS2776 1-Wire® 64 EEPROM 2-cell Li+ 14-TDFN (3 x 5)
DS2778 2-Wire 64 EEPROM 2-cell Li+ 14-TDFN (3 x 5)
DS2780 1-Wire 40 EEPROM 1-cell Li+ — 8-TSSOP, 8-TDFN (3 x 4)
DS2781 1-Wire 40 EEPROM 1- or 2-cell Li+ — 8-TSSOP, 8-TDFN (3 x 4)
DS2782 — 2-Wire 40 EEPROM 1-cell Li+ — 8-TSSOP, 8-TDFN (3 x 4)
DS2784 1-Wire 40 EEPROM 1-cell Li+ 14-TDFN (3 x 5)
1kΩ 1kΩ 1kΩ 1kΩ150Ω
150Ω
5.1V
PK+
DATA
PK-
0.1µF 0.1µF
PLSDC CC
SNS
DQ
PIO
VDD
VIN
VSS
RSENSE
CP
DS2784
www.maximintegrated.com Mobile Power Product Guide
5
USB Charger Detection Enables Optimal Universal ChargingImagine a world where only one charger fits all your devices.
With the widespread deployment of USB ports in hotel rooms, planes, and automobiles, the increasing adoption of USB charging is making that vision a reality. The MAX14656* allows your mobile device to capitalize on USB’s ubiquity, while optimizing to the charge capability of each type of USB port and even proprietary USB adapters. And it's all done in a manner compliant to the latest USB charging recommendations**.
*Future product—contact factory for availability.
**USB Battery Charging Specification Revision 1.2
MAX14656
MAX8903_/MAX8934_
D+
D-
VBUS
ID
UART/AUDIO
USB HS
APPLICATIONSPROCESSOR
DCM/IUSB
BATTERY
I2C
INT
OVP
CO
NTR
OL
DPDT 15kV ESD
UNIVERSALCHARGER DETECTION
USB ID DETECTION
EXTERNAL CHARGER
5V
36VOVP
www.maximintegrated.comMobile Power Product Guide
6
Protect Your Portable Device from Damage When Simultaneously Using Multiple Power SuppliesThe MAX14606/MAX14607 are high-voltage, high-current overvoltage protectors (OVPs) that feature reverse bias blocking capability so that two power sources can be safely interfaced simultaneously without damage to either one. In this design, two integrated back-to-back FETs prevent the voltage applied at the intended output from feeding back into the input. Without this reverse bias blocking, users are forced to use multiple discrete, space-consuming external components to protect the end equipment.
MAX14607
IN
1µF 1µF
VBUS
VIO
USBMICRO-AB
OTG ENFROM SYSTEM
EN
OUT
OVLO
ACOK
1µF
WIRELESS CHARGINGOR DOCKING STATION
CHARGER IN
CHARGER
APPLICATIONSPROCESSOR
VIO
MAX14607
IN
EN
OUT
OVLO
ACOK
Two integrated back-to-back FETS provide reverse bias blocking
Capable of up to 3A continuous current through a low, 54mΩ (typ) internal on-resistance
Q1
GATE DRIVER
SAFELY CONNECT MULTIPLE POWER SOURCES
Q2
SUITABLE FOR HIGH-POWER SYSTEMS
3A
MAX14607
IN OUT
www.maximintegrated.com Mobile Power Product Guide
7
Charge Safer with the Industry’s First Dual-Input Smart Charger with Advanced Temperature MonitoringThe MAX8934_ automatically adjusts charge current and termination voltage to meet JEITA recommendations for safe charging*. It integrates all circuitry for charging and switching the load between the battery and the external power.
*Follows charging recommendations per JEITA (Japan Electronics and Information Technology Industries Association) Standard, “A Guide to the Safe Use of Secondary Lithium Ion Batteries on Notebook–Type Personal Computers,” April 20, 2007.
SYS
LDO
GND
CHARGECURRENT
LOADCURRENT
BATT BATTERY
ACADAPTER
UP TO2A
CHARGEAND
SYS LOADSWITCHUSB
DC Q1
Q2
Q3
USBUP TO
1.5A
3.3V ALWAYS-ONLINEAR
REGULATOR
28-TQFN
4m m x 4 m m
TEMPMONITOR
Adjusts charge currentand voltage to a safe level,
no software needed
Withstands up to16V input voltage
Withstands up to9V input voltage
MAX8934_
System is supportedby adapter evenif battery is dead
SYSTEMLOAD
TEMPERATURE (°C)
FAST
-CH
ARG
E C
URR
ENT
(C)
0
1
0.5
10 25 45
T2T1
60 85
SAFETY REGION 1
SAFETY REGION 2
AUTOMATICALLY SETS MAXIMUM CHARGE RATE
CH
ARG
E TE
RMIN
ATIO
N V
OLT
AG
E (V
)
TEMPERATURE (°C)
0
4.2
4.1
4.0
4.075
±25mV
±25mV
10 25 45
T2T1
60 85
SAFETY REGION 1
SAFETY REGION 2
AUTOMATICALLY SETS CHARGE TERMINATION VOLTAGE
www.maximintegrated.comMobile Power Product Guide
8
Battery Charger Simplifies USB Charging and Maximizes User ConvenienceUSB Charger* Automatically Enumerates with Host or Detects Adapter TypeThe MAX77301** is a linear battery charger for Bluetooth® headsets, cell phones, and other portable devices. Built-in USB enumeration automatically negotiates with the USB host to optimize charging current without processor intervention, thus eliminating the need for a separate CPU or system software. The MAX77301 includes Smart Power Selector™ circuitry to allow a portable device to operate with a discharged battery or no battery.
Saves Space and Cost
• Up to 0.9A charging with integrated pass element
• Internal power-path switch eliminates an external FET
• Needs no external CPU for charger detection or USB enumeration
• Packaged in a 2.38mm x 2.38mm WLP
Easy Implementation
• No extra software required for charger detection or USB enumeration
• Charger is stand alone
• Compliant with USB Battery Charging Specification, Revision 1.1
• I2C interface
• Supports JEITA safe charging
*USB charging protected by U.S. Patent #6,507,172.
**Future product—contact factory for availability.
Enumerate
Charge
www.maximintegrated.com Mobile Power Product Guide
9
Feature Competition MAX8903A MAX8903A Advantages
Input type (USB/DC) Single Dual/single Greater design flexibility
Input range (V, abs. max) 4.35 to 5.5, 7 4.15 to 16, 18 No external overvoltage-protection IC needed
UVLO/OVLO /— / Better design robustness
Switching frequency (MHz) 2.25 4 Smaller external components
BAT to SYS (RDSON) (mΩ) 180 50 Longer battery life and less heat
Output current (A, max) 1.2 2 Faster charge time
2A, DC-DC, Li+ Battery Charger Reduces Charge Time and Heat by 50%The energy-efficient MAX8903A Li+ battery charger utilizes its Smart Power Selector circuitry to operate with no battery or a deeply discharged battery when connected to external power. It optimizes limited USB or adapter power and charges the battery with input power not used by the system. The MAX8903A eliminates the need for external FETs, diodes, and sense resistors to simplify design and maximize board space.
The MAX8903A stays cool while competinglinear chargers heat up.
-
LINEARCHARGER
MAX8903ASWITCHING
CHARGER
Conditions:VIN: 5VVOUT: 3.4VICHARGE: 800mA
CHARGE ANDSYS LOADSWITCH
DC SYS
BAT
ACADAPTER
OR USB
GND
USBUSB
CHARGECURRENT LOAD
CURRENT
LX CS
PWMSTEP-DOWN
SYSTEMLOAD
BATTERY
50%faster50%faster50%faster
MAX8903A
+ Up to50% fastercharge rate
30%cooler
www.maximintegrated.comMobile Power Product Guide
10
Charge Fast, Cool, and SafelyThe MAX8971 is the industry's smallest 1.55A charger that charges quickly with minimal heat generation. And it charges from a variety of adapters.
Maximizes Safety
• JEITA-compliant temperature monitoring
• Withstands transient inputs up to 22V
• Charge safety timer
• Thermal shutdown
• Adaptive input current limiting
Minimizes Heat
• Temperature regulation
• No external FETs or sense resistors
• Switch mode maximizes efficiency
• Low path resistance minimizes waste
Saves Space
• 3.25MHz switching requires only 2.0mm x 1.6mm inductor
• No external FETs or sense resistors
• Tiny 2.44mm x 2.67mm package
The Basics of USB Battery Charging: A Survival Guide Review the battery-charging survival guide in Maxim's Application Note 4803 at www.maximintegrated.com/AN4803 for more information.
AVL
BAT+
BAT-
SYSTEMLOAD
DC BYP
SCL
SDA
IRQB
I2CIN
VICHG
GND
AVL
PVL
SFO
DC1,DC2
BST
BYP
C12.2µF
25V0603
C74.7µF6.3V
0402C31µF
6.3V0402 C4
4.7µF6.3V
0402
C52.2µF6.3V0603
C21µF25V0603
C60.1µF0402
R1, 47mΩ0402
L1, 1µH2520
RTB0402 R2,
100kΩ
LX1,LX2
PG1,PG2
CS
BAT
THM
-0.3V TO +22VTOLERANT
4.0V TO 10V OPERATIONAL
µP
MAX8971
Competitor60°C
MAX897142°C
www.maximintegrated.com Mobile Power Product Guide
11
TINI Power SoCs Break Through the Integration Barrier in Portable PlatformsHalf the board area in smartphones and tablets is consumed by power, analog, mixed-signal, audio, and passive components. Maxim’s power SoCs integrate these functions in a single chip to free up real estate for new differentiating features and higher-capacity batteries.
• Integrate power and system functions into a single chip to save board space, reduce the bill of materials, and improve performance
• Highly efficient power-management functions extend battery life and reduce heat
• Built-in microcontroller and memory offload the applications processor and allow one design to be ported across multiple platforms
TINI® Power SoC
APPLICATIONS/BASEBAND
PROCESSORS
DISPLAY
TOUCH SCREENAND DISPLAY
BACKLIGHT POWER
TOUCH-SCREEN CONTROL
TACTILE FEEDBACK
DIGITAL/CONTROL/GPIO
SERIAL INTERFACE:I2C/SPI/JTAG
GPIO
RTC
PROCESSOR ANDSYSTEM POWER
HIGH-EFFICIENCYDC-DCs
HIGH-SPEED CORE DC-DCs WITH DVS
LOW-NOISE,HIGH-PSRR LDOs
AUDIO
HEADPHONE,MIC, SPEAKER
CODEC
HEADPHONE, MIC,SPEAKER AMPS
SENSORSSYSTEM
TEMP SENSOR
AMBIENT-LIGHTSENSOR
AMPS AND ADCs
MISC. ADC CHANNELS
INDICATORSKEYBOARD
VIBRATORLED AND MOTOR DRIVERS
MEMORY
LPDDR RAMDDR POWER
BATTERY MANAGEMENT
MAIN BATTERY
BATTERY
TOUCH SCREEN
USB
SPEAKER
HEADPHONES
USB/AC ADAPTER
BACKUP BATTERY
CHARGER WITH OVP AND Smart Power Selector CIRCUITRY
FUEL GAUGE
CONNECTORS
CURRENT-LIMIT ANDOVP PROTECTION
CAMERAS
LOW-NOISE POLREGULATORS
CAMERA FLASH
RADIO
ENVELOPE-TRACKINGRFPA POWER
3G/4G RADIO
MOBILE TV
BLUETOOTH/802.11
USB HOST
HIGH-RESOLUTIONCAMERA
VGA CAMERA
HDMI®
Li+
MICROCONTROLLER
DETECTOR AND SWITCH
www.maximintegrated.comMobile Power Product Guide
12
Complete Power Management for Applications and Baseband Processors
• Five highly efficient step-down regulators
• Twenty LDOs
Dual-Input Li+ Battery Charger
• USB or AC adapter input
• Battery/power switchover
• 28V input protection
Audio Subsystem
• Class D mono amplifier
• DirectDrive® headset amplifier
• Programmable input mixer
ADC/Touch-Screen Controller
• 12-bit resolution
• Monitors charge current, battery, and die temperature
Additional Functionality
• Backup-battery charger
• SIM-level translator
• USB 3-wire transceiver
• RTC with alarms and 32kHz buffers
• TCXO buffers
• I2C interface for programming
Highly Integrated Power SoC Saves Cost and PCB Space in Smartphones
Customer Success StoryPowering the Applications and Baseband Processors
APPLICATIONS PROCESSOR
SYSTEM POWERMANAGEMENT,
AUDIO SUBSYSTEM,AND TOUCH-SCREEN
INTERFACE(5.85mm x 5.7mm)
APPLICATIONSμP
TVOUTPUT
MOBILETV
Bluetooth
LCD
KEYBOARD
CAMERAMODULE
SD™CARD
NOR/NAND
HI-SPEEDUSB
CODEC(2.7mm x 3.5mm)
BASEBANDµP
MAX9880A
MAX8906
1 005
1 0051 0051 005
1 005
1608 1608 1608 1608 1608
1608 1608 1608 1608 1608
1608 1608 1608 1608 1608
3216
MAX86605mm x 5mm
LTC40783mm x 3mm
MAX12373mm x 5mm
R20152mm x 2mm
WM97137mm x 7mm
4.2mm DIAMETERLITHIUM
MAX9705B2mm x 1.5mm
MAX9725B2mm x 1.5mm
MAX47362mm x 2mm
3216
3216
32161005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005 1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1608 1608 1608
1608 1608 1608
1608 1608
1608
160
816
08
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
1608
0603
0603 0603
0603
0603
0603
0603
0603
1005
1005
1005
10051005
1005
1005
1005 1005
2012
1005
1005
1005
1005
1005
1005
1005
1005 1005 1005
1068
1005
1005
2828 2828 2828
2520
2520
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
0603
4.2mm DIAMETERLITHIUM
MANGANESE
5.85mm x 5.7mm
2.7mm x 3.5mm
2016
2520
2012
2012
2012
3215
IC count: 9Component count: 121IC size (mm2): 161Component area (mm2) 321Estimated BOM: $2.11
IC count: 2Component count: 76IC size (mm2): 38Component area (mm2): 117Estimated BOM: $1.29
MAX8906 SmartphoneSolution
Conventional Smartphone Solution
PM66507mm x 7mm
1608
MAX8906
MAX9880A
BASEBAND PROCESSOR
www.maximintegrated.com Mobile Power Product Guide
13
Two Step-Down DC-DCs and Two LDOs Fit in a Tiny 3mm x 3mm TQFN• Ideal for powering small handheld devices
• Saves space with two DC-DC step-downs, and two LDOs in a 3mm x 3mm package
• Low noise, 45μVRMS output noise
• Individual enable pins add flexibility
Tiny Dual 2A Step-Down Converter with 6 LDOs The MAX8967* delivers versatile high-current, high-efficiency power sources in a very small solution footprint.
Minimizes Current Consumption
• Over 90% efficiency with internal synchronous rectifier
• Automatic skip mode at light loads
• Low 44μA no-load quiescent current
Reduces Board Area with Smaller Components
• 4.4MHz step-down switching allows for 1μH inductors
• COUT = 1μF for 150mA and 300mA LDOs
• Remote output capacitor capable
Programmable Voltage Options Allow Compatibility
• Step down converters programmable output voltage (0.6V to 3.3875V) through I2C bus
• LDO programmable output voltage (0.8V to 3.95V in 50mV steps)
*Future product—contact factory for availability.
INPUT2.6V TO 5.5V
1.7V TO 5.5V
1.65V TO 5.5V
1µH OUT20.6V TO3.3875V/
2A
0.8V TO 3.95V, 150mA
0.8V TO 3.95V, 300mA
0.8V TO 3.95V, 150mA
0.8V TO 3.95V, 150mA
0.8V TO 3.95V, 300mA
0.8V TO 3.95V, 150mA
I2C
1µH OUT10.6V TO3.3875V/
2A
IN2AV
IN1
MAX8967
INBAGND
VIO
VID1VID2
IRQB
INA
SCL LDO1
LX2
OUT2
LDO2
LDO3
LDO4
LDO5
LDO6
SDA
EN1EN2
PGND2
LX1
OUT1
PGND1
Li+
INPUT 2.8V TO 5.5V
IN12
HIGHLYFLEXIBLE
EN1
LX1OUT1
OUT2
OUT2
OUT3
OUT4
OUT1
DOWN TO 0.6V,UP TO 600mA
DOWN TO 0.6V,UP TO 1.2A
DOWN TO 1.2V,UP TO 300mA
IN34
LX2
EN2EN3EN4
REF
LDO
LDO
MAX8667
80% less power lossand 75% smaller than
discrete solution
www.maximintegrated.comMobile Power Product Guide
14
Tiny PMIC Frees PCB for More Features or Larger Battery CellThe MAX8819_ is a complete power solution for portable applications. It integrates a battery charger, step-down converters, and WLED power. Maxim's Smart Power Selector circuitry enables instant on at adapter plug-in even with a fully discharged battery and intelligently rations power to both the system and the battery.
~88mm2 Solution Area, 1mm Solution Height
(Form-factor-optimized placement)
11.6mm
7.6m
m
2016
4mm x 4mm1608 1608
1005
06030603
0603
060
3 RESCAP
IC
DIODE
LEGEND
INDUCTOR
0603
1608 1608
2220
2016
2012 16
08
160
8
160
8
160
8
160
816
08
2016
MAX8819_
USB/AC-DCADAPTER
ENABLE SYSTEM
ENABLE CHARGER
ENABLE BACKLIGHT
SYS
DC
EN123
CEN
EN4
LX4
OVP4
FB4GND
OUT3
OUT2
BAT
SYS
Li+/Li-PolyBATTERY
I/O
MEMORY
CORE
OUT1MAX8819_
Automatically powers from an external source or battery: Smart Power Selector enables instant-on
in which the system can be powered up immediately from an adapter, even with a
missing or dead battery
Maximizes battery life: three 95% efficient,
2MHz step-downconverters
Cuts cost and size: integrated high-efficiency WLED step-up converter
Travel light: integrated charger eliminates the need for an additional
charger IC
www.maximintegrated.com Mobile Power Product Guide
15
Tiny 1mm x 1.5mm, 500mA Step-Down DC-DC Allows Flexible Board Layout• Consumes only 24μA
• Up to 4MHz switching
• Low 24μA quiescent current
• Evaluation (EV) kit available to speed designs
Advantages
• Dynamic voltage scaling
• 3.2MHz switching for small components
• 40.5mm2 solution size
• Better than 0.5% initial accuracy
DC-DC Step-Down Converter Allows Application Processors to Run FasterIndustry’s Smallest 2.5A Step-Down Converter with I²C ControlThe MAX8952 is a tiny, DC-DC step-down converter with high output current that enables application processors to run at their maximum clock speed to meet the demands of today’s multimedia applications in handheld devices. Designed to minimize your solution area, this 2mm x 2mm converter also ensures tight output-voltage accuracy for reliable, power-efficient operation.
Li+
1µH OR 2.2µH
2.2µFOR4.7µF
OUTPUT0.6V TO 2.5V
APPLICATIONPROCESSOR
BASEBANDCHIPSET
2.2µF
INPUT2.7V TO 4.9V
4MHz SWITCHING
HIGH EFFICIENCY (MAX8640Y)
LOAD (mA)
EFFI
CIEN
CY (%
)
0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1000
3.6VIN1.8VOUT
OFF
ON
GND
SHDN
OUT
LXIN
MAX8640YMAX8640Z
Li+
1µH OR 2.2µH
2.2µFOR4.7µF
OUTPUT0.6V TO 2.5V
APPLICATIONPROCESSOR
BASEBANDCHIPSET
2.2µF
INPUT2.7V TO 4.9V
4MHz SWITCHING
HIGH EFFICIENCY (MAX8640Y)
LOAD (mA)
EFFI
CIEN
CY (%
)
0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1000
3.6VIN1.8VOUT
OFF
ON
GND
SHDN
OUT
LXIN
MAX8640YMAX8640Z
I2C INTERFACE
VOLTAGECONTROL, VREF,
BIAS, ETC.
PWM LOGIC
CLOCK GENOSC
VDAC IN1
SNS-
SNS+
PGND
LX
IN2
AGNDVID1
VID0
EN
IN1
SDASCL
VDD
SYNC
MAX8952
www.maximintegrated.comMobile Power Product Guide
16
High Efficiency Over a Wide Load Extends Battery Life
1.2A Step-Down DC-DC Achieves Up to 95% Efficiency, 16µA IQThe MAX1556/MAX1557 step-down DC-DC converters save battery life by having the lowest supply current under all operating conditions, including light load, heavy load, and dropout. These devices provide the fastest load and line-regulation responses of any parts in their class. Use them to get longer standby and operating times in your PDA, smartphone, digital camera, and other handheld devices.
• Single part has one adjustable and three fixed outputs
• Pin-programmable 3.3V, 2.5V, 1.8V, and adjustable outputs at 1.2A (MAX1556)
• Pin-programmable 1.5V, 1.3V, 1.0V, and adjustable outputs at 600mA (MAX1557)
• Analog soft-start with zero overshoot
• Tiny 10-pin, 3mm x 3mm TDFN package
100
0.1 10 1001 1000
95% EFFICIENCY AT 1mA
OUTPUT CURRENT (mA)
EFFI
CIEN
CY (%
)
70
80
90
VIN = 3.6V, 5.0V
VOUT = 3.3V
100%
LOAD-STEPRECOVERY
40µs
4µs
IQ INDROPOUT
388µA
27µA
SOFT-STARTINRUSH
CURRENT
500mA
100mA
LOADTRANSIENT
200mVP-P
50mVP-P
OUTPUTVOLTAGE
TOLERANCE
±3%
±2%
18µA
QUIESCENTCURRENT
16µA
80%
60%
40%
20%
0%
INDUSTRY’S LOWEST SUPPLY CURRENTS AND FASTEST RESPONSE TIMES
COMPETITION
MAXIM INTEGRATED
ONOFF
INPUT2.6V TO 5.5V
VOLTAGESELECT
OUTPUT0.75V TO VIN
C110µF
C40.47µF
R1100Ω C2
22µF
C31000pF
L13.3µH 1.2A
LX
SSSHDN
GND
PGND
OUT
INP
IN
D1
D2
MAX1556
www.maximintegrated.com Mobile Power Product Guide
17
• 92dB PSRR at 5kHz
• 16μVRMS output noise from 10Hz to 100kHz
• 500mA output current •±1.5%outputaccuracyoverload,line,andtemperature •100mVdropout
• 80μA operating supply current, < 1μA shutdown supply current
• Operates over the -40°C to +125°C automotive temperature range
Advanced Noise Reduction Results in Only 11µVRMS of Output Noise: MAX8840
• Tiny 1mm x 1.5mm x 0.8mm, 6-pin µDFN package
• 78dB PSRR at 1kHz
• Low 40µA ground current
• 120mV dropout at 120mA
• Adjustable or fixed output voltage
Industry's Highest PSRR and Lowest Output Noise Enable Noise-Sensitive Applications
Ultra-Low Noise LDO Saves Space Without Compromising Performance
FREQUENCY (kHz)
0.1 1 10 100
1000
100
10,000
100.01 1000
ULTRA-LOW NOISE PEFORMANCE(MAX8840)
OU
TPU
T N
OIS
E D
ENSI
TY (n
V/ √
Hz)
04021µF
04021µF
020110nF
2.6mm
1.5mm
6-µDFN
1m
m x 1.5 m m
SMALLEST SOLUTION: 3.9mm2
(MAX8840)
INDUSTRY’S SMALLEST 11µV LDO
LDO OUTPUT-NOISE SPECTRAL DENSITYvs. FREQUENCY (MAX8902A)
FREQUENCY (Hz)100k10k1k100
100
1k
10k
10
10 1M
PSRR vs. FREQUENCY (MAX8902A)
10k1k10010 100kFREQUENCY (Hz)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
PSRR
(dB
)
NO
ISE
DEN
SITY
(nV
/ √H
z)
OUTPUTDOWN TO 0.6V WITH
ONLY 100mV OF DROPOUT
10µF
INPUT1.7V TO 5.5V
0.01µF 10µF
OFF
ON
VOUTSELECTION
IN
EN
OUT
BYP
SELA
SELB
OUTS
GNDEP
MAX8902A
www.maximintegrated.comMobile Power Product Guide
18
1A Step-Up Converter Saves Space and PowerDelivers Industry's Best-in-Class EfficiencySaves Space
• 2MHz PWM switching frequency for small external components
• True Shutdown™ circuitry eliminates need for external load switch
• Compact, 3mm x 3mm, 10-pin TDFN package
High Performance and Safety
• Up to 97% efficiency and low 30μA IQ
• Overvoltage and short-circuit protection, as well as thermal shutdown
• Controlled current in soft-start
• Low-noise, fixed-frequency operation (FPWM mode)
Tiny 1A Step-Up Converter with Track ModeSafe and Efficient Step-Up Mode
• Up to 1A output current
• Up to 96% efficiency
• Soft-start controls inrush current
• True Shutdown circuitry
• Low 1μA shutdown current
Compact Layout
• 3mm x 3.5mm solution size
• 1.25mm x 1.25mm WLP package
Track Modes
• Automatic or manual
• 130mΩ on-resistance
• 1A current limited
• Fast transition into boost
Applications
• Add-on for OTG boost
• Low cutoff voltage battery assist
ON
OFF
INPUT VOLTAGE1.2V TO 5.5V
OUTPUT VOLTAGE3.3V TO 5V
FPWM
SKIP
True Shutdowncircuitry eliminates
load switch
Forced PWMor skip mode
BATT LX
POUT
OUTS
FB
ON
SKIPB
GND
MAX8815A
EFFICIENCY vs. LOAD CURRENT,VOUT = 5V
OUTPUT CURRENT (mA)
EFFI
CIE
NC
Y (
%)
100101
10
20
30
40
50
60
70
80
90
100
00.1 1000
SKIPVIN = 3.6V, 3V, 2.4V, 1.8V, 1.5V
FPWMVIN = 4.2V, 3.6V, 3V, 2.4V, 1.8V, 1.5V
97%efficiency
SKIPVIN = 4.2V
INPUT2.5V TO 5.5V
OUTPUT3.3V TO 5V, 1A
CIN4.7µF
COUT22µF
L11µH
IN OUT_LX_
GND_
EN
MAX8969
TREN
www.maximintegrated.com Mobile Power Product Guide
19
Part ICHG(A, max)
Protected VIN (V, max) EV Kit Inputs Features Package
MAX8606 1 14 Yes 1 Smart Power Selector circuitry, safety timer, thermal regulation 14-TDFN
MAX8671X 1 14 Yes 2Smart Power Selector circuitry, safety timer, thermal regulation, part of a PMIC
40-QFN
MAX8677A 1.5 16 Yes 2 Smart Power Selector circuitry, safety timer, thermal regulation 24-TQFN
MAX8804_ 0.7 28 No 2 28V withstand, small size 8-TDFN
MAX8808_ 1 15 Yes 1 1A charging, tiny package 8-TDFN
MAX8814 0.6 28 Yes 1 28V withstand, smart autoboot assistant 8-TDFN
MAX8819_ 1 5.5 Yes 1Smart Power Selector circuitry, safety timer, thermal regulation, part of a PMIC
28-TQFN
MAX8895_ 1.85 14 Yes 1Smart Power Selector circuitry, auto-enumeration and charger type detect
25-WLP
MAX8900_ 1.2 22 Yes 1 Safe JEITA charging 30-WLP
MAX8971 1.55 22 Yes 1 Smallest 1.55A SMPS charger with JEITA 20-WLP
MAX8903_ 2 20 Yes 2Smart Power Selector circuitry, safety timer, switch mode for cool and fast charging
28-QFN
MAX8922L 1 30 No 1 30V withstand, GSM test mode 10-TDFN
MAX8934_ 1.5 14 Yes 2Smart Power Selector circuitry, safety timer, safe JEITA charging
32-QFN
MAX77301* 0.9 14 Yes 1
Smart Power Selector, auto-enumeration and charger detect, JEITA charge control, I2C programmable
25-WLP
Chargers
*Future product—contact factory for availability.
www.maximintegrated.comMobile Power Product Guide
20
Part Description VIN(V, min)
VIN (V, max)
VOUT (V, min)
VOUT (V, max)
IOUT (A, max)
DC-DC Outputs
Oper. Freq. (kHz)
Features Package
MAX685
Dual-output (positive and negative), DC-DC converter for CCD and LCD
2.7 5.5 2.7 24 — 2 480
Current limiting, external sync., fixed-frequency PWM, internal power FETs
16-QSOP, 24-TQFN
MAX66828V, constant-frequency, current-mode PWM controller
3 28 3 100 6 1 500Current limiting, external power FETs, external sync., fixed-frequency PWM
10-µMAX®
MAX1705
1-to-3-cell, 1A, low-noise, step-up DC-DC converter with linear regulator
0.7 5.5 2.5 5.5 0.8 1 400
Current limiting, external sync., fixed-frequency PWM, internal power FETs, low-battery/POK output, synchronous rectifier
6-QSOP
MAX17221.5µA IQ, step-up DC-DC converter in thin 5-pin SOT23
0.8 5.5 2 5.5 0.15 1 —Current limiting, internal power FETs, synchronous rectifier
5-TSOT
MAX17631.5A, low-noise, 1MHz, step-up DC-DC converter
0.7 5.5 2.5 5.5 1.5 1 1000
Current limiting; fixed-frequency PWM, internal power FETs, synchronous rectifier
16-QSOP/TSSOP-EP
MAX1765800mA, low-noise, step-up DC-DC converter with 500mA linear regulator
1 5.5 1.25 5 0.8 1 1000Fixed-frequency PWM, internal power FETs, synchronous rectifier
16-QSOP/TSSOP-EP
MAX8569200mA step-up converter in 6-pin SOT23 and TDFN
1.5 5.5 1.23 5.5 0.25 1 —Current limiting, internal power FETs, reset output, synchronous rectifier
6-SOT/TDFN-EP
MAX8570High-efficiency LCD boost with True Shutdown circuitry
2.7 5.5 2.7 28 0.01 1 —Current limiting, internal power FETs, True Shutdown circuitry
6-µDFN/ SOT
MAX8614_
Dual-output (positive and negative) DC-DC converters for CCD and AMOLED
2.7 5.5 -15 7.5 0.125 2 1000
Current limiting, fixed-frequency PWM, internal power FETs, low-battery/POK output, True Shutdown circuitry
14-TDFN-EP
MAX8815A
1A, 97% efficiency, 30µA quiescent current, step-up converter with True Shutdown circuitry
1.2 5.5 1.265 5.5 1 1 2000
Current limiting, fixed-frequency PWM, internal power FETs, sync. rectifier, True Shutdown circuitry
10-TDFN-EP
MAX8969
1A simple step-up converter with True Shutdown circuitry and track mode
2.5 5.5 3 5 1 1 3000
Current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier, True Shutdown circuitry, track mode
9-WLP
Step-Up Converters
Part Description VIN(V, min)
VIN (V, max)
VOUT (V, min)
VOUT(V, max)
Output Adjust
Method
IOUT(A, max)
Oper. Freq. (kHz)
Features Package
MAX8625A
High-efficiency, seamless transition, step-up/down DC-DC converter
2.5 5.5 1.25 4 Preset or resistor 0.8A 1000
Current limiting, fixed-frequency PWM, internal power FETs, synchronous rectifier
14-TDFN-EP
Step-Up/Down Converter
www.maximintegrated.com Mobile Power Product Guide
21
Step-Down ConvertersPart Description VIN
(V, min)VIN
(V, max)VOUT
(V, min)VOUT
(V, max) IOUT
(A, max)DC-DC
Outputs
Oper. Freq. (kHz)
Features Package
MAX155616μA IQ, 1.2A PWM step-down DC-DC converter
2.6 5.5 0.75 5.5 1.2 1 1000
Adjustable frequency, current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier
10-TDFN-EP
MAX8640Z
500mA, 4MHz synchronous-rectified step-down DC-DC converter in SC70
2.7 5.5 1.1 1.8 0.5 1 4000
Adjustable frequency, current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier
6-μDFN, 6-SC70
MAX8649
1.8A step-down regulator with differential remote sense in 2mm x 2mm WLP
2.5 5.5 0.75 1.38 1.8 1 3250
Current limit, external sync, fixed frequency/PWM, internal power FETs, synchronous rectifier
16-WLP
MAX8836Z
1.2A PWM step-down converter in 2mm x 2mm WLP/UCSP for PA Power
2.7 5.5 3.1 3.4 1.2 1 500
Current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier
16-UCSP™, 16-WLP
MAX8896
Dual PWM step-down converter in a 2mm x 2mm package for WCDMA PA and RF power
2.7 5.5 0.5 5 0.7 2 2000
Current limit, fixed frequency/PWM, internal Pwr. FETs ,synchronous rectifier
16-UCSP
MAX8952
2.5A step-down regulator with differential remote sense in 2mm x 2mm WLP
2.5 5.5 0.77 1.4 2.5 1 3250
Current limit, external sync, fixed frequency/PWM, internal power FETs, output OVP, synchronous rectifier
16-WLP
Part Description VIN(V, min)
VIN (V, max)
VOUT(V)
IOUT(A, max)
ICC(mA, max)
Oper. Freq. (kHz)
Topology Package
ICL7660 20mA charge-pump voltage converter 1.5 10 +2VIN,
-VIN0.02 0.175 10 Doubler, inverter,
unregulated
8-μMAX/CDIP(N)/PDIP(N)/SOIC(N)/
TO99
MAX881RLow-noise bias supply in μMAX with POK for GaAsFET PA
2.5 5.5 -VIN - 0.6 0.01 0.95 100 Inverter, regulated 10-μMAX
MAX1759100mA buck/boost regulating charge pump in μMAX
1.6 5.52.5 to 5.5
adj. or3.3 fixed
0.1 0.18 1500 Regulated 10-μMAX
Charge Pumps
www.maximintegrated.comMobile Power Product Guide
22
Converters for WLED PowerPart Topology LEDs
(max)Dimming Control
ILED (mA, max)
VIN (V, min)
VIN (V,
max)
Oper. Freq. (kHz)
Features Package
MAX1554 Inductor based 10 Analog, PWM 20 2.7 5.5 —
Internal power switch(es), open-LED protection, shutdown, soft-start
8-TDFN-EP
MAX1579 Inductor based 8 Analog, PWM 25 2.7 5.5 1000
Internal power switch(es), LED temperature derating, open LED protection, shutdown, soft-start
24-TQFN
MAX1582 Inductor based 7 Analog, PWM 20 2.6 5.5 1000
Internal power switch(es), open-LED protection, shutdown, soft-start
12-TQFN
MAX1698 Inductor based 50 Analog 350 2.7 5.5 — Open-LED protection, shutdown, soft-start 10-μMAX
MAX8596X Inductor based 9 Analog, PWM 25 2.6 6 1000
Internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start
8-TDFN-EP
MAX8630_ Charge pump 5PWM, serial pulse
25 2.7 5.5 1000Internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start
14-TDFN-EP
MAX8647 Charge pump 6 I2C serial 24 2.7 5.5 1000Internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start
16-TQFN
MAX8678 Charge pump 4 Serial pulse 24 2.7 5.5 1000
Internal power switch(es), open-LED protection, shutdown, soft-start
16-TQFN
MAX8821 Charge Pump 6 Digital, I2C serial 25 2.7 5.5 1000
Internal power switch(es), LED temperature derating, open LED protection, shutdown
28-TQFN
MAX8822 Charge pump 4 Digital 24 2.7 5.5 1000Internal power switch(es), open-LED protection, shutdown, soft-start
16-TQFN
MAX8830 Inductor based 5 I2C serial 200 2.7 5.5 1000Camera flash, internal power switch(es), open LED protection, shutdown, soft-start
16-WLP
MAX8831 Inductor based 45 Digital, I2C serial 25 2.7 5.5 2000
Internal power switch(es), open-LED protection, shutdown, soft-start
16-WLP
MAX8901_ Inductor based 6PWM, serial pulse
25 2.6 5.5 750Internal power switch(es), open-LED protection, shutdown, soft-start
8-TDFN-EP
MAX8930 Charge pump, linear current regulator 12 I2C serial 25 2.7 5.5 4000 Internal power switch(es),
shutdown, soft-start 49-WLP
www.maximintegrated.com Mobile Power Product Guide
23
Converters for WLED FlashPart Topology LEDs
(max)Dimming Control
ILED (mA, max)
VIN (V, min)
VIN (V,
max)
Oper. Freq. (kHz)
Features Package
MAX1577_ Charge pump 40 Digital 1200 2.7 5.5 1000Camera flash, internal power switch(es), open-LED protection, shutdown, soft-start
8-TDFN-EP
MAX1583 Inductor based 5 Analog, digital 300 2.6 5.5 1000
Camera flash, internal power switch(es), open-LED protection, shutdown, soft-start
10-TDFN-EP
MAX1707 Charge pump 11 Digital, I2C serial 100 2.7 5.5 1000
Camera flash, internal power switch(es), LED temperature derating, open LED protection, shutdown, soft-start
24-TQFN
MAX8607 Inductor based, linear current regulator 1 Digital 1500 2.7 5.5 1000
Camera flash, internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start
14-TDFN-EP
MAX8645_ Charge pump 8
Analog, digital, PWM,
serial pulse
200 2.7 5.5 1000Camera flash, internal power switch(es), LED temperature derating, shutdown, soft-start
28-TQFN
MAX8834_ Inductor based 3 Digital, I2C serial 1500 2.5 5.5 4000
Two flash/movie LED current regulators, GSM blanking, MAXFLASH protection to prevent system lockups
20-WLP
Part Description VIN(V, min)
VIN(V, max)
VOUT(V)
VDROPOUTat Rated
ILOAD(V, typ)
RatedILOAD
ICC(µA, max)
OutputVoltage
Noise(µVRMS, typ)
Package
MAX1589ALow-input-voltage, 500mA LDO regulator with reset in SOT and TDFN
1.62 3.6 0.75, 1, 1.3, 1.5, 1.8, 2.5, 3 0.175 500 140 86 66-TDFN-EP/
TSOT
MAX1818
500mA, low-dropout linear regulator with output current limiting and thermal protection in SOT23
2.5 5.5 1.5, 1.8, 2, 2.5, 3.3, 5, or adj 5.5 500 250 115 6-SOT23
MAX8510Ultra low-noise, high-PSRR, low-dropout, 120mA linear regulator in SC70
2 6 1.6, 1.8, 2.5, 2.7, 2.8, 2.85, 3, 3.3, 4.5 0.12 120 90 11
5-SC70,8-TDFN-EP
MAX8840Ultra-low-noise, high-PSRR, low-dropout, 150mA linear regulator in μDFN
2 61.5, 1.6, 1.8, 1.9, 2.5, 2.6, 2.7, 2.8, 2.85, 2.9, 3, 3.1, 3.3, 4.5
0.17 150 90 11 6-μDFN/ UTLGA
MAX8868Low-noise, low-dropout, 150mA linear regulator in SOT23 with auto-discharge
2.5 5.5 2.5, 2.8, 2.84, 3, 3.15, 3.3, 3.6, 5 0.16 150 180 20 5-SOT/
TSOT
MAX8902_ Low-noise 500mA LDO regulator in 2mm x 2mm TDFN 1.7 5.5 1.5, 1.8, 2, 2.5, 3, 3.1,
3.3, or adj 0.05 500 120 16 8-TDFN-EP
LDOs for Baseband and RF Chipsets
Contact Maxim Direct at 1.800.629.4642 or for more information, visit www.maximintegrated.com.
© 2012 Maxim Integrated. All rights reserved. The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. in the United States and other jurisdictions throughout the world. All other company names may be trade names or trademarks of their respective owners.
Rev. 0; November 2012
www.maximintegrated.comMobile Power Product Guide
The Bluetooth word mark is a registered trademark owned by Bluetooth SIG, Inc. and any use of such marks by Maxim is under license. HDMI is a registered trademark of HDMI Licensing LLC. ModelGauge, Smart Power Selector, True Shutdown, and UCSP are trademarks and 1-Wire, DirectDrive, TINI, and μMAX are registered trademarks of Maxim Integrated Products, Inc. SD is a trademark of the SD Card Association.