Total Power Solution for Portable Applications General Description
The AAT2554 is a fully integrated 500mA battery charger, a 250mA step-down converter, and a 300mA low dropout (LDO) linear
regulator.
The input voltage range is 4V to 6.
5V for the battery charger and 2.
7V to 5.
5V for the step-down converter and linear
regulator, making it ideal for applications operating with single-cell lithiumion/polymer batteries.
The battery charger is a complete constant current/constant voltage linear charger.
It offers an integrated pass device, reverse blocking protection, high accuracy current and voltage regulation, charge status, and charge termination.
The charging current is programmable via exte...