Refer to the PDF data sheet for device specific package drawings
3.0V to 5.5V input voltage operating range for battery-to-battery charging and USB adapters
The BQ21088 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in an 8-ball chipscale package which does not need HDI PCB process for fabrication thereby reducing the PCB cost. The device can support up to 1A charging and system loads of up to 3A.
PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE (NOM) |
---|---|---|---|
BQ21088 |
YBG (DSBGA 8) |
1.6mm x 1.1mm |
1.6mm x 1.1mm |
The battery is charged using a standard Li-ion or LiFePO4 charge profile with three phases: precharge, constant current and constant voltage. Thermal regulation provides the maximum charge current while managing the device temperature. The charger is also optimized for battery to battery charging with 3V minimum input voltage operation and can withstand 25V absolute maximum line transients. The device integrates a single push-button input to reduce the total solution footprint.