AXP209 datasheet(3/45 Pages) ETC2

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AXP209

Enhanced single Cell Li-Battery and Power System Management IC

1. Overview

AXP209 is designed to be a highly-integrated power system management IC that is optimized for

applications requiring single-cell Li-battery (Li-Ion/Polymer) and multiple output DC-DC converters. It is

offering an easy-to-use and flexible complete solution which can fully meet the increasingly complexity

of accurate power control required by modern application processor system.

AXP209 Incorporates an adaptive USB-Compatible PWM Charger, 2 Buck DC-DC converters,5 Linear

regulators (LDOs), Voltage/Current/Temperature and other multi-channel 12-Bit ADC, as well as 4

Configurable GPIOs. To ensure power system safety and stability, the AXP209 also integrates over/under

(OVP / UVP), Over temperature(OTP), and Overcurrent (OCP) Protection circuits.

With Intelligent Power Select, IPS™ circuits, the AXP209 can distribute power safely and transparently

among external AC-adapter, Li-battery and application system load. It can still work normally when

there is no battery (e.g. deeply discharged/defective battery) but only external input power source.

The AXP209 provides a small, simple solution for obtaining power from three different power sources;

single-cell Li-Ion battery, USB port, and AC-adapter. It can also support a rechargeable backup battery

too.

To ensure compatibility with a wide range of system processors, AXP209 uses a Two Wire Serial

Interface (TWSI), through which application processor is capable of enabling/disabling power rails,

programming voltages, accessing internal registers, as well as measurement data (including Fuel

Gauge). With the power monitoring results of high precision (1%, determined by the 1% BIAS

resistance), end users will always know the real-time power consumption, which can bring them an

unprecedented experience of power management.

AXP209 Provided 6mm x 6mm 48-pin QFN Package.

Applications

Pin Definition

 Handheld mobile devices

Smart mobile phones, PMP / MP4, Number of

Cameras, Digital cameras, Handheld

guide, Air Equipment, GPS, PDA,

Handheld digital Radio and television

receivers



Mobile Internet Devices, xPad



Digital photo frame, portable DVD

Player Ultra-Mobile PCs UMPC and

UMPC-like, Learning machine



Should With Department Li Device

Power Road Department EC



Application Processor systems

Other batteries and multi-power

applications

Confidential

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