B
MT6305 PMIC Block diagramV+ BuzzerLED
Vd Vsus Va VioVrtc Vtcxo Vm
Vsim
Reset Chr_Det Chr-cntl
Reset GPIO GPIO Buzzer GPIO Vibrator
M SIM Ext. Charger PowerFET
PMIC
BaseBand
Charger Chr-drv I-charger SIM Bat_Det
Pwr_BB SR_Clk_En Pwr_key
BB_Wakeup SR_Clk_En Keypad
VchrRsense 0.2 OHM Battery Pack
Aux_ADC_1 Vbat Bat-Temp Bat-Type Aux_ADC_2 Aux_ADC_3 Aux_ADC_4
GPIO
1
B
PMIC function (1) Regulator overview Va, Vtcxo (2.8V, Low noise
and high PSRR design, can be turned off in sleep mode by VASEL and
SRCLKEN, ) Vm (1.8/2.8V Vmsel), Vcore (1.8V/1.2V VD_RTC_SEL)
MT6305B Vio (2.8V) Vsim (3V/1.8V SIMSEL) Vrtc (1.5V/1.2V
VD_RTC_SEL) (1mA) MT6305B
Reset control Reset delay (2msec/nF * Crstcap)
LDOs On/Off control Charger in > Vbat + 0.25V BBwake up H
PWRKEY LOW OT/UVLO (3.0,3.2) DDLO (2.5,2.6)
2
B
PMIC function (2) Charger function BATUSE (L BATDET (L Li-ion, H
Ni-Mh) charger enabled) (5usec)
PMIC auto disable charging function if illegal battery is found
or battery removal
Precharge function (Li-ion/Ni-MH)Precharge current = 10mV
(ISENSE-VBATSNS)/Rsense
CC mode charging (Li-ion/Ni-MH)CC mode charging current =
160mV/Rsense
CV mode charging (only for Li-ion)Vbat is kept to 4.2V
OV function (5usec)4.3 V (Li-ion), 5.1V (Ni-MH)
Thermal shutdown (disable all regulator, exclude RTC) Buzzer,
LED, Alerter driver (low Von voltage) 1.8V/3V SIM level shifter
3
PMIC function (3)
B
4
B
Charger function Boundary condition Max. charger voltage 9V
MT6305B Max. battery charge current (1C for Li-ion 600mAHr) Max.
power dissipation of external PMOS (1W)(Vchg-3.2-0.6)*0.6 < 1
Vchg < 5.73V (Vchg-3.2-0.6)*0.4 < 1 Vchg < 6.3V
(Vchg-3.2-0.6)*0.2 < 1 Vchg < 8.8V (15-3.2-0.6) * I < 1 I
< 99mA
Fast charge ( CC mode charging current always = 1C)(Vchg
VBat-Vdiode Von > 0 Vchg > 4.2 + 0.6 + 0.2 =5V
Any charging time VCHG > VBAT + 0.3
VCHG > 4.5 V
5
B
Charging state diagramH.W.Any state No charge state1. 2. 3. 4.
Charger unplugged BATDECT floating OV CHRCTRL L
Charger detected & BATDECT L & Vbat > 4.2V &
CHRCTRL H
CV mode stateCharger detected & BATDECT L & Vbat >
3.2V & CHRCTRL H
Charger detected & BATDECT L & Vbat < 3.2V
Charger detected & BATDECT L & Vbat > 4.2V &
CHRCTRL H
Precharge state
CC mode state
Charger detected & BATDECT L & Vbat > 3.2V &
CHRCTRL H
6
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S.W.1. 2. Check ADC fail, Safety timer timeout (6hr) Charger
plugged out ADC check for abnormal condition
Charge Error/end state
3.
Any state
a. b. c.
Vbat > 4.5V
Battery over voltage Invalid charger Battery
Vchg > 6.5 or Vchg < 3
Init safety timer
BATEMP < 0oC or BATEMP > 45oC temp. too cold or over heat
BATID N.A.
Precharge state
Vbat_off >4.05V and in talking mode
Init state
Charger detected
d. e. f. P.S.
ICHGon > 1A or ICHGon < 20mA charger or battery ICHGoff
> 1A Charger fail
Invalid
Pause stateVbat_off < 3.8V or in stand by mode Vbat_off
>4.05V and in talking mode
Vbat_off >4.05V and in talking mode
Charge complete state
XXX_on : ADC value is measured during pulse on charging and RF
off state. xxx_off : ADC value is measured during pulse off
charging and RF off state. xxx : ADC value is measured during pulse
on and pulse off charging and RF off state.
Vbat_off < 4.1V Vbat_off >4.05V and in talking mode
Vbat_off > 3.4V
ICHG < 60mA HISR Charger task MMI
Fast (CC) charge stateVbat_off > 4.1V
Top-off (CV) charge state
Charger in Charger in Charger out Charger out ADC fail Charging
time out Charge complete
7
B
ADC calibration and measurement 2 channel ADC calibration is a
must. Worse casecalibration, charging current 4.2V 4.2 *
(101/200-99/200) * 2 / 0.33 = 250mA , ADC calibration. summary.a.
calibration VBAT 3.4/4.2 ADC channel 0 and channel 3 b. ADC channel
1,2,4 slope/offsetcopy ADC0
ADC(10bits) cailbration1bit 2.8/1024*2/0.33 * 2 = 34mA ADC pass
criterion 1. ADC0 : test at 3.6V +-40mV (factory) 2. ADC3-ADC0/0.33
< 20mA (factory)
8
B
Outline MT6318 Outline MT6318 Block Diagram Performance
Comparison between MT6305B and MT6318 MT6318 Application
Circuits
9
B
MT6318 Outline1.Handles GSM/GPRS Base band Power Management.
2.Power-up sequencer and Protection Logic. 3.Eleven Low drop-out
(LDO) regulators. 4.AC/USB Charger for Li-ion battery (Vin(MAX)
15V). (MAX) 5.LCD can show the charging status at pre_charge 6.LCD
backlight white LED driver 7.Switching capacitor for keypad R/G/B
LED power 8.400mW class AB single channel audio amplifier 9.SPI
3Wire Interface 10.SIM Interface 11.TFBGA 7mm x 7mm Package
10
B
MT6305B Block DiagramV+ AlerterLED
Vd Va VioVrtc Vctxo Vm
Vsim
Reset Chr_Det Chr-cntl
Reset EINT GPIO Buzzer GPIO Vibrator
M SIM Ext. Charger PowerFET
PMIC
BaseBand
Charger Chr-drv I-charger SIM Bat_Det
Pwr_BB SR_Clk_En Pwr_key
BB_Wakeup SR_Clk_En Keypad
VchrRsense 0.2 OHM Battery Pack
Aux_ADC_1 Vbat Bat-Temp Bat-Type Aux_ADC_2 Aux_ADC_3 Aux_ADC_4
GPIO
11
B
MT6318 Block DiagramUSB ACV_USB SPIDAT SPICK SPICS AUDN
AUDPGDRVAC GDRVUSB Audio Amplifier 400mW
SPK+, SPK VD
ISENSE
Charger Dector, CNTL & USB Reg
Chr_en Status SPI control Logic Power up/down Protection DIM
control
Digital Core, 1.8/1.5/1.2/0.9V, 200mA Digital IO LDO 2.8V, 100mA
Analog LDO 2.8V, 150/50mA Memory LDO 1.8/2.8V, 150mA VTCXO LDO
2.8V, 20mA RTC Voltage 1.5V, 0.6mA
0.2 OHM VBAT VB_OUT PWRBB PWRKEY SRCLKEN DC_OV BAT_ON INT SEL2
RESET PWRINBLDRV CS_BL FB_BL SW
VIO VSW_A VA VM VMSEL VTCXO
GND
SEL1VRTC
DC/DC Booster Control
Control MC LDO 2.8V,200mA
VMC SIMVCC VSIM LED_KP CS_KP
Vsim_selVIBR C1+,C1C2+ SIMIO SIMRST SIMCK Vibrator Driver
250mA
SIM LDO 1.8/3.0V,20mA KP regulator (200mA) RGB current Source
(25mAx3) SIM RST, CLK, Data
Vibr_onCharge Pump 300mA
LED_R/G/B SIO SRST SCK
12
B
Performance Improvement from MT6305B Integrate class AB single
channel audio amplifier Integrate switching capacitor (Charge pump)
for backlight LED power Integrate DC/DC control for backlight
driver or flash light driver Increase 4 LDO (VUSB/Vsw_a/Vmc/Vibr)
Provide the charging status at pre_charge (option) Increase USB
charger circuit (option) Charge current can programmable 2-step RTC
can apply back Li-ion battery and CAP UVLO can programmable Vb_out
and Isense_out reduce power off current Save GPIO counts (SPI)
13
B
Feature Comparison (1/3)Features General Package Size Operating
Voltage VD VIO VA VM VTCXO VRTC VSIM VSW_A VMC VUSB VIBR Level
Shift MT6318 7*7 mm 96 Ball TFBGA 5.0V(?) 1.8/1.5/1.2/0.9V 200mA
2.8V 100mA 2.8V 150mA 2.8/1.8V 150mA 2.8V 20mA 1.5/1.2V 0.6mA
3.0/1.8V 20mA 3.3/2.8V 50mA 2.8/3.0V(?) 200mA 3.3V 50mA 3.2/1.8V
200mA YES MT6305B 7*7 mm 48 Pin QFN 5.5V 1.8/1.2V 200mA 2.8V 100mA
2.8V 150mA 2.8/1.8V 150mA 2.8V 20mA 1.5/1.2V 0.2mA 3.0/1.8V 20mA x
x x x YES
Linear Regulator
SIM Interface
14
B
Feature Comparison (2/3)Output Driver Back Light Driver Audio
Amplifier Charge Pump Vibrator Driver LED Driver Alerter Driver
Boost Converter Differential Input/Output LED_R LED_G LED_B LED_KP
Maximum Input Voltage CV Mode CC Mode Pre-Charge OVP LDO VIBR x x 4
LED * 20mA 400mW, 8 Step Gain 20mA 20mA 20mA 200mA 15V 4.2V 8 step
current setting 50mA 4.3V Open Drain 250mA Open Drain 150mA Open
Drain 300mA x x x x x x 15V 4.2V 160mV/Rsense 10mV/Rsense 4.3V
AC Charger
15
B
Feature Comparison (3/3)Maximum Input Voltage 5.5V CV Mode 4.2V
CC Mode 8 step current setting Pre-Charge 50mA OVP 4.3V 3 Wire
Interface YES LCD Display at Pre-Charge YES Power-On Reset,
Start-Up Timer YES Over Voltage Protection YES Under Voltage
Lock-Out YES Thermal Overload YES Interrupt for Charger, USB and OV
Detection YES VB_OUT and ISENSE_OUT YES 2-Step RTC YES UVLO
Programmable YES x x x x x x x YES YES YES YES x x x x
USB Charge
SPI Interface SEL1/SEL2
Protection
Miscellaneous
16
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MT6318 and MT6305B BOM Cost Comparison1. BOM Delta Price:34.4NT.
(30.7:65.1) 2. BOM Counts:44:52 3. Board size:?? (7*7 :
7*7mm2)MT6318Part MT6318 AAT3221IJS-2.5-T1(Camera) NTHD4P02F 4.7u
(0805 X5R 6.3V) 2.2u (0603 X5R 6.3V) 1u (0603 X5R 6.3V) 1u (0805
Y5V 16V) 1.0u (0603 X5R 10V) 100n/10V (X5R) 100n(0402 X5R 6.3V)
FDG6303N R 0402 Quantity 1 1 1 6 5 5 1 1 2 2 1 18 3.5 6.8 LM4890
1.165 1.206 0.6 0.27 0.6 0.14 0.14 3.2 0.029 1u (0805 Y5V 16V)
100n/10V (X5R) Total(NT) 44 30.76 SC600A R 0402 Total(NT) 1 5 1 17
52 0.27 0.14 13 0.029 65.109 XC6401EE31DR(USB LDO) XC6401EE35MR(BT
LDO) UMD6N FDG6303N 4u7 (0805 X5R 6.3V) 2u2 (0603 X5R 6.3V) 1u
(0603 X5R 6.3V) 1 1 1 2 4 6 10 3.5 3.5 1.25 3.2 1.165 1.206 0.6 1
11.3 Cost
MT6305BPart MT6305B SI3443DV+CRS03(Schottky Diode) Quantity 1 1
6.8 Cost
17
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Charge Circuit (AC and USB charger)Charge Detector4.2V <
VCHARGER < 9 V INT: Charger detected Interrupt Output
BAT_ON=0USB AC GDRVAC GDRVUSB Charger ISENSE 0.2 OHM VBATGND
8 step current setting USB RegulatorVUSB_3.3V, USB ICHR: 50mA ~
450mA (controlled by SW)
Chr_en Dector, CNTL & Status USB Reg SPI
V_USB
BAT_ON INT SEL2 SEL1 PWRIN
SEL1/SEL2 for Precharge
18
B
DC/DC for Back Light DriverVBAT L1 D1 RV551V-30 D2 LED D3 U1 R1
1M LED D4 LED R3 C2 0.47 1uF R2 51K R4 20
10uH C1 CIN
BLDRV CS_BL
MOS-N
OV FB_BL
19
B
DC/DC for Flash Light5V L1 VBAT 2 D1 1 R1 R4 C1 Q1 BLDRV MOSFET
N D2 R9 Flash ligh LED
FB_BL FL_ENABLE
Q2 MOSFET N
20
B
Charge pump for Keypad and R/G/B DriverpwrinFB : Feed Back CS :
current sense KP : Key Pad PD: Power Down Vbat DC/DC DR Vin CNTL CS
PD Dim OV FB
BLDRV CS_BL DC_OV FB_BL
R
R
0.47u~0.1u (1u/50V)
SPISPIDAT SPICk CS
Dim control
Dim_5 Dim_1 ~Dim_5 Dim_4 PD KP Vo Vin regulator FB4.5 V
LED_KP CS_KPVo_R Vo_G Vo_B
Vo = 4.3V For Id=20mA
PD
Vbat
Charge Pump RegulatorVbat C1+ C1-
CNTL Vin PD_B PD_G PD_R
LED_RGB
R
R
R
Vout
Dim_3 Dim_2 Dim_1
RGB
Current source
Adjustable Current Gauge (12,16,20,24) mA
21
B
BAT_ON ConnectionAC GDRVACCharger Detector, VCHG CNTL & USB
Reg.
ISENSE0.2 OHM
VBAT
GND
BAT_ON SEL2 SEL1 PWRINAVDD 24K
Temp in
BB
NTC/10K Battery
CIN
22
B
LM4890 Block Diagram
23
B
MT6318 APA Block Diagram
24
B
SPI InterfaceSignal Name SPICK SPIDAT SPICS Attribute Edge
trigger Level Active low Direction BB PMIC BB PMIC Description
Serial bus clock Serial data PMIC SPI bus selection
BB PMIC
Once SPICS goes low this bus is active, BB start to transfer the
4 register index bits followed by a read/write bit, then wait for 3
clock for PMIC SPI state machine to decoded the operation for
succeeding 8 data bits. he first SPICK will be started 100 nsec
after the SPICS is actived low.
25
