STEVAL-ISB041V1 STMicroelectronics

STEVAL-ISB041V1 Li-Ion/Li-Po battery power management evaluation board based on STBC02 Data brief 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 Features power consumption is reduced to less than 100 Charges single-cell Li-Ion/Li-Po batteries nA: two embedded 3 SPDT load switches with CC-CV algorithm and charge intelligently manage the overall system power termination consumption. An advanced reset circuit with Fast charge current programmable from 1 trigger signal is integrated. mA to 450 mA The STEVAL-ISB041V1 can work in standalone Pre-charge current programmable from 1 mode and a single wire interface can be used to mA to 450 mA control the STBC02 for full operation. The Adjustable floating voltage up to 4.45 V STEVAL-ISB041V1 evaluation board provides full Integrated always-on low quiescent LDO access to the STBC02 functions through header regulator connectors and can be supplied via a micro-AB Battery over-charge and over-discharge USB connector. protections Overcurrent protection Shipping mode exit input Integrated dual 3 SPDT load switches Integrated smart reset / watchdog logic Single wire control interface RoHS compliant March 2017 DocID029888 Rev 2 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram STEVAL-ISB041V1 1 Schematic diagram Figure 1: STEVAL-ISB041V1 circuit schematic GSPG1910161115SG 2/4 DocID029888 Rev 2 J1 J3 GND GND IPRE 3 ISET 2 1 BATSNSFV U1 3 BATSNS GND J7 2 IN E5 F4 LDO 1 IN LDO IN S LDO S LDO J23 GND C1 F5 C3 BATMS IN 2 STBC02 1 10uF 1.0uF R18 WURC WAKE UP Q1 C1 SW SEL GND J13 GND GND B2 RST PENDNIG J24 DNP C2 nRESET SYS C5 E1 CHG A1 RESET NOW SW1 I SYS CHG 7 SYS S 470 R7 SW1 OA 6 C2 D5 B1 CEN SW1 OB SYS CEN 5 SW2 I 4 GND GND 1.0F SW2 OA 3 SW2 OB 2 GND A1 RESET NOW RESET NOW DNP/10k 1 NTC R9 10k 5 R8 R10 100k SW1 I F3 B2 RST PENDING GND J15 4 GND SW1 I RST PENDING GND BAT 3 BAT S SW1 OA E4 C2 nRESET 2 SW1 OA nRESET GND 1 R13 SW1 OB E3 C1 SW SEL R11 SW1 OB SW SEL GND LDO DNP/10k J10 GND R12 100k 10k/ DNP LDO SYS 3 R5 R6 3 LDO S R14 100k SW2 I E2 C4 BATMS BATMS2 SYS S 2 GND SW2 I BATMS 2 1 DNP DNP 1 SW2 OA F2 BATMS3 SW2 OA J8 GND GND J11 SW2 OB F1 SW2 OB IN 3 IN S D1 NTC 2 NTC GND 10k R4 BAT 1 J18 R1 3.3k ISET A4 B3 BATSNS GND ISET BATSNS BAT J9 GND R2 33k IPRE D4 A2 BATSNSFV GND IPRE BATSNSFV BAT J22 GND 0R R3 A5 BAT BAT BAT S SYS J21 B5 C4 BAT J16 J20 J17 IN 4.7uF VBUS DM C3 GND DP C3 GND ID D3 D2 WAKE UP GND D3 WAKE UP SHIELD J19 GND STBC0x FC30 2269x2610 C10 R16 DNP DNP P9 P1 GND GND GNDGND DNP C12 DNP C11 WAKE UP 7 CHG 6 CEN 5 SW SEL 4 C RESET NOW 3 D CEN 2 1 A3 GND B4 AGND RST PENDING 5 nRESET 4 BATMS3 3 BATMS2 2 1 LDO IN