STNS01PUR STMicroelectronics

STNS01 Li-Ion linear battery charger with LDO Datasheet - production data Description The STNS01 is a linear charger for single-cell Li- Ion batteries integrating an LDO regulator and several battery protection functions. The STNS01 uses a CC/CV algorithm to charge Features the battery the fast-charge current can be Charges single-cell Li-Ion batteries with programmed using an external resistor. Pre- CC/CV algorithm and charge termination charge current and termination current are scaled Charge current programmable up to 200 mA accordingly. The floating voltage value is 4.2 V. 1% accuracy on floating voltage (4.2 V) The input supply voltage is normally used to Integrated 3.1 V LDO regulator charge the battery and provide power to the LDO Automatic power path management regulator. When a valid input voltage is not Battery overcharge protection present and the battery is not empty, the device Battery over-discharge protection automatically switches to battery power. Battery overcurrent protection The STNS01 integrates overcharge, over- Charging timeout discharge and overcurrent protection circuitry to Very low battery leakage in over- prevent the battery from being damaged under discharge/shutdown mode fault conditions. It also features a charger enable Low quiescent current input to stop the charging process when battery Charge/fault status output overtemperature is detected by an external Charger enable input circuitry. Available in a DFN12L (3x3x0.75 mm) package When the shutdown mode is activated, the battery power consumption is reduced to less than 500 nA to maximize battery life during shelf Applications time or shipping. The device is available in the Portable MP3 players DFN12L (3x3x0.75 mm) package. Portable low-power devices Table 1: Device summary Fitness portable devices Order code Package Packing DFN12L 3000 STNS01PUR (3x3x0.75 mm) parts per reel December 2017 DocID024654 Rev 4 1/29 www.st.com This is information on a product in full production. Contents STNS01 Contents 1 Application schematic .................................................................... 6 2 Block diagram .................................................................................. 7 3 Pin configuration ............................................................................. 8 4 Maximum ratings ............................................................................. 9 5 Electrical characteristics .............................................................. 10 6 Typical performance characteristics (curves) ............................. 13 6.1 IN .................................................................................................... 15 6.2 SYS ................................................................................................. 15 6.3 LDO ................................................................................................. 15 6.4 SD ................................................................................................... 15 6.5 CHG ................................................................................................ 16 6.6 CEN ................................................................................................ 16 6.7 GND ................................................................................................ 17 6.8 NTC ................................................................................................. 17 6.9 ISET ................................................................................................ 17 6.10 BATMS ............................................................................................ 17 6.11 BATSNS .......................................................................................... 18 6.12 BAT ................................................................................................. 18 7 Operation description ................................................................... 19 7.1 Power-on ......................................................................................... 19 7.2 Battery charger ................................................................................ 19 7.3 Battery temperature monitoring ....................................................... 21 7.4 Battery overcharge protection ......................................................... 22 7.5 Battery over-discharge protection ................................................... 22 7.6 Battery discharge overcurrent protection ........................................ 22 7.7 Input overcurrent protection ............................................................ 22 7.8 SYS and LDO short-circuit protection ............................................. 23 7.9 IN overvoltage protection ................................................................ 23 7.10 Shutdown mode .............................................................................. 23 7.11 Thermal shutdown ........................................................................... 23 7.12 Reverse current protection .............................................................. 23 8 Package information ..................................................................... 24 2/29 DocID024654 Rev 4