BQ24070RHLT

The BQ24070RHLT from Texas Instruments is a highly integrated, single-cell Li-ion and Li-Polymer linear charger and system power-path management IC. Designed for space-limited portable applications, it provides autonomous power source selection between AC adapter and battery.

Key electrical specifications include a maximum charge current of 1.5A, an input voltage range of 4.35V to 16V, and a battery charge voltage of 4.2V. The device supports programmable current and timer features, along with fault protection for over temperature, reverse current, and short circuits. It operates within a temperature range of -40°C to 125°C.

This IC is housed in a compact 20-VQFN (3.5x4.5 mm) package with an exposed pad, suitable for surface mounting. Its integrated Dynamic Power-Path Management (DPPM) allows the AC adapter to simultaneously power the system and charge the battery, while the Power Supplement Mode enables the battery to supplement the AC input current. Charge status outputs are available for LED indication or system interface.

Applications for the BQ24070RHLT include smart phones, PDAs, MP3 players, digital cameras, and handheld devices where efficient battery charging and system power management are critical.