AXP202 datasheet(2/48 Pages) ETC2

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Single Cell Li-Battery PWM Charger and Power System Management IC

AXP202

1．Introduction

AXP202 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.

AXP202 comprises an adaptive USB-Compatible PWM charger, 2 BUCK DC-DC converters, 5 LDOs,

multiple 12-bit ADCs of Voltage, current and temperature as well as 4 configurable GPIOs. To

guarantee the safty and stability of power system, AXP202 has integrated various protection circuits

such as Over voltage Protection(OVP)/Under voltage Protection(UVP) 、 Over temperature

protection(OTP)、Over current protection(OCP).

With Intelligent Power Select, IPS™ circuits, AXP202 can distribute power safely and transparently

among external AC-adapter, Li-battery and loaded application system, and it can still work normally

when there is no battery (deeply discharged/infective battery) but only external input power source.

The AXP202 provides a small, simple solution for obtaining power from three different power sources,

single-cell Li-Ion battery, USB port, and AC-adapter, and it can support rechargable backup battery too.

To ensure compatibility with a wide range of system processors, AXP202 uses a sTwo Wire Serial

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

programming voltage, visiting 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 be always posted with the real-time power consumption, which can bring them an

unprecedented experiences of power management.

AXP202 is available in a 6mm x 6mm 48-pin QFN package.

Product Application

Portable Handset:

Smartphone, PMP/MP4, Digital

Camera,

Digital

Camcorder,

PND, PDA, PTV

Mobile

Connected

Devices

such as xPad,MID

DPF, Portable DVD Player，

Ultra

Mobile

UMPC

and

UMPC-like，Entertainment and

Education Machine

Application Processor systems

Other battery and multi-power

systems

Pin Description

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