GENERAL DESCRIPTION

The patent-pending ACT8740 is a complete, cost effective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of portable handheld equipment. This device integrates one PWM step-down DC/DC converter, one PWM step-up DC/DC converter with over-voltage protection (OVP), three low dropout linear regulators (LDOs) and a full-featured linear-mode Li+ battery charger into a single, thin, space-saving package. An I2C Serial Interface provides programmability for the DC/DC converters, LDOs and battery charger.

FEATURES

• Multiple Patents Pending

• Li+ Battery Charger with Integrated MOSFET

    − Programmable Charge Current up to 1A

    − ON/OFF Control

• Five Integrated Regulators

    − 350mA PWM Step-Down DC/DC

    − Step-Up DC/DC with OVP for WLED Bias

    − 350mA Low Noise LDO

    − 250mA Low Noise LDO

    − 250mA Low Noise LDO

• I2CTM Compatible Serial Interface

    − Programmable Output Voltages

    − Configurable Operating Modes

• Minimal External Components

• 4x4mm, Thin-QFN (TQFN44-24) Package

    − Only 0.75mm Height

    − RoHS Compliant

APPLICATIONS

• Portable Devices and PDAs

• Wireless Handhelds

• DMB Enabled Devices

• GPS Receivers, etc.