bq24261 single-input, single cell Li-ion battery charger and system power path management device supports USB port or wall adapter operations

This post sponsored by Texas Instruments.

The bq24261 is a highly integrated single cell Li-ion battery charger and system power path management device that supportd operation from either a USB port or wall adapter supply.  

The power path allows the 3A, 30V bq24261 to power the system from a high efficiency DC-to-DC converter while simultaneously and independently charging the battery. The power path also permits the battery to supplement the system current requirements when the adapter cannot. Many features are programmable using the I2C interface.

To support USB OTG applications, the bq24261 is configurable to boost the battery voltage to 5V and supply up to 1A at the input. The battery is charged with three phases: precharge, constant current, and constant voltage. Thermal regulation prevents the die temperature from exceeding 125°C. Additionally, a JEITA-compatible battery pack thermistor monitoring input (TS) is included to prevent the battery from charging outside of its safe temperature range. Applications include fitness and wearable electronics, power bank solutions, electronic point-of-sale solutions, and portable audio solutions. The bq24261 features a charge time optimizer for faster charging and boost capability to supply 5V at 1A at IN

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To download a datasheet, click here.

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