January 2016

DocID027068 Rev 3

1/4

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STEVAL-ISB032V1

Li-Ion battery charger evaluation board based on STNS01

Data brief

Features



Charges single-cell Li-Ion batteries with CC-

CV 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 over-

discharge/shutdown mode



Low quiescent current



Charge/fault status output



Charger enable input



RoHS compliant

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. Pre-

charge 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.

The STNS01 integrates over-charge, over-

discharge 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.