March 2017 DocID029888 Rev 2 1/4

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STEVAL-ISB041V1

Li-Ion/Li-Po battery power management evaluation board based on STBC02

Data brief

Features • Charges single-cell Li-Ion/Li-Po batteries

with CC-CV algorithm and charge termination

• Fast charge current programmable from 1 mA to 450 mA

• Pre-charge current programmable from 1 mA to 450 mA

• Adjustable floating voltage up to 4.45 V • Integrated always-on low quiescent LDO

regulator • Battery over-charge and over-discharge

protections • Overcurrent protection • Shipping mode exit input • Integrated dual 3 Ω SPDT load switches • Integrated smart reset / watchdog logic • Single wire control interface • RoHS compliant

Description The STEVAL-ISB041V1 product evaluation board is based on STBC02 battery power management, integrating a linear charger for single-cell Li-Ion batteries with battery protection functions, an LDO regulator, two SPDT load switches and intelligent reset logic.

The device uses a CC / CV algorithm to charge the battery; the fast-charge and pre-charge current can be programmed using an external resistor.

The input supply voltage is used to charge the battery and provide power to the LDO regulator. When an appropriate input voltage is not present and the battery is not empty, the device automatically switches to battery power.

When shutdown mode is activated, the battery power consumption is reduced to less than 100 nA: two embedded 3 Ω SPDT load switches intelligently manage the overall system power consumption. An advanced reset circuit with trigger signal is integrated.

The STEVAL-ISB041V1 can work in standalone mode and a single wire interface can be used to control the STBC02 for full operation. The STEVAL-ISB041V1 evaluation board provides full access to the STBC02 functions through header connectors and can be supplied via a micro-AB USB connector.

Schematic diagram STEVAL-ISB041V1

2/4 DocID029888 Rev 2

1 Schematic diagram

Figure 1: STEVAL-ISB041V1 circuit schematic

1.0u

F

C3

P1

GND

10uF

C1

1.0µ

F

C2

3.3k

R1

33k

R2

GND

GN D

0RR

3

10k

R4

!D

NP

R6

!D

NP

R5

10k

R9

10k/

!DN

PR

1110

0kR

12

470

R7

4.7u

F

C4

I SE T

I PR

E

IN I N_S

GND

GND SW

2_O

B

SW1_

I

SW1_

OB

SW2_

I

SW1_

OA

SW2_

OA

GN D

GND

L DO

SYS_

SSY

S

L DO

LDO

_ S

CHG

CEN

RES

ET_N

OW

RST

_PEN

DIN

G

nRES

ET

SW_S

E L

BATM

S

NTC

BATS

NSF

V

BATM

S2

BATM

S3

GND

BAT

BATS

NS

BAT

GND

BAT_

SBA

T

WAK

E_UP

100k

R14

GND

100k

R10

GND

GND

P9

INF5

SYS

C5

SW1_

IF3

SW1_

OA

E4

SW1_

OB

E3

SW2_

IE2

SW2_

OA

F2

SW2_

OB

F1

ISET

A4

IPR

ED

4

GND A3

AGND B4

WAK

E_UP

D2

BAT

A5BA

TSN

SFV

A2BA

TSNS

B3N

TCD

1

BATM

SC

4

SW_S

ELC

1nR

ESET

C2

RST

_PEN

DIN

GB2

RES

ET_N

OWA1

CEN

B1C

HGE1

LDO

F4IN

E5

SYS

D5

BAT

B5

D3

D3

C3

C3

U1 ST

BC0x

_FC30

_226

9x26

10

SW_S

EL

STB

C02

RS

T_P

EN

DING

nRE

SE

TR

ES

ET_N

OW

C1

B2 C2

A1

!DNP

/10k

R8

!DNP

/10k

R13

LDO

GND

GND

GND

RST_PENDINGnRESETBATMS3BATMS2

1234567

J1

SW_SELCEN

WAKE_UPCHG

GND1

2345

J3

RESET_NOWCEN

CD

GNDIDD

PD

MVB

US

S HIE

L D

J19

!D

NP

C10

!D

NPR

16

GND

GND

IN

GND

BAT

NTC

SYS

INBATS

NSBA

TSN

SFV

LDO

LDO

_S

GND

GND

GND

GND

123

J8

IN_S

123

J9

SYS_

S123

J11

GND

BAT_

S12345

J10

123

J23

J20

GND

J22

GND

J16 LDO

J17 IN

J18

BAT

J21

SYSBA

TMS

ISET

IPR

E

SW1_

ISW

1_O

ASW

1_O

BSW

2_I

SW2_

OA

SW2_

OBGND

123

J7

1234567

J15

GND

12

J13

GND

!D

NP

R18

!DNPC12

GND

!DNPC11

GND

WAK

E_UP

J24

WU

RCQ

1

GSPG1910161115SG

STEVAL-ISB041V1 Revision history

DocID029888 Rev 2 3/4

2 Revision history Table 1: Document revision history

Date Version Changes

20-Oct-2016 1 Initial release.

13-Mar-2017 2 Updated board photo on the cover page.

STEVAL-ISB041V1

4/4 DocID029888 Rev 2

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