STEVAL-ISB032V1

STEVAL-ISB032V1 Li-Ion battery charger evaluation board based on STNS01 Data brief Description The STEVAL-ISB032V1 is a product evaluation board based on the STNS01, which is a linear charger for single-cell Li-Ion batteries integrating an LDO regulator and several battery protection functions. The device uses a CC/CV algorithm to charge the battery. The fast-charge current can be programmed using an external resistor. Precharge current and termination current are scaled accordingly. The floating voltage value is 4.2 V. The input supply voltage is normally used to charge the battery and provide power to the LDO regulator. When a valid input voltage is not present and the battery is not empty, the device automatically switches to battery power. Features               Charges single-cell Li-Ion batteries with CCCV algorithm and charge termination Charge current programmable up to 400 mA 1% accuracy on floating voltage (4.2 V) Integrated 3.1 V LDO regulator Automatic power path management Battery over-charge protection Battery over-discharge protection Battery overcurrent protection Charging timeout Very low battery leakage in overdischarge/shutdown mode Low quiescent current Charge/fault status output Charger enable input RoHS compliant January 2016 The STNS01 integrates over-charge, overdischarge and overcurrent protection circuitry to prevent the battery from being damaged under fault conditions. It also features a charger enable input to stop the charging process when battery overtemperature is detected by external circuitry. When shutdown mode is activated, the battery power consumption is reduced to less than 500 nA to maximize battery life during shelf time. DocID027068 Rev 3 For further information contact your local STMicroelectronics sales office 1/4 www.st.com Schematic diagram 1 STEVAL-ISB032V1 Schematic diagram Figure 1: STEVAL-ISB032V1 circuit schematic LDO JP2 U1 STNS01 USB IN 1 CHG CEN SD JP3 2 2 1 BAT SNS BA T NTC JP5 1 2 3 R3 LDO CEN GND CEN 11 12 8 LDO C4 4.7uF 7 R2 10K ISET GND BATMS 9 LDO 10 CHG GND CHG 5 6 4 SYS C3 2.2uF SYSTEM 1 2 3 LED C1 2.2uF SYS GND JP4 D1 LDO IN LDO GND LDO R1 600 VIN 2 1 VIN GND 1 2 C2 2.2uF JP1 JP6 1 2 3 R4 LDO SD GND SD JP7 CN1 VIN GND 5 4 3 2 1 VIN 1 2 3 NTC1 10K ADC_IN ADC_EN GND BATMS GND R5 USB Micro-B 0 JP8 1 2 3 4 BATSNS BAT NTC GND BATTERY GSPG12092014DI1205 2/4 DocID027068 Rev 3 STEVAL-ISB032V1 2 Revision history Revision history Table 1: Document revision history Date Rev Changes 21-Oct-2014 1 First release. 13-Nov-2014 2 Updated figure on the cover page. 26-Jan-2016 3 Updated title on the cover page. DocID027068 Rev 3 3/4 STEVAL-ISB032V1 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2016 STMicroelectronics – All rights reserved 4/4 DocID027068 Rev 3