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Analogic unveils power IC for CDMA phones

Posted: 05 May 2008     Print Version  Bookmark and Share

Keywords:power management IC  CDMA handsets  linear charger  battery charger  Lithium-ion 

Advanced Analogic Technologies Incorporated (AnalogicTech) has introduced the AAT2601, the companyâ€s first power management IC designed for the specific requirements of mid-tier CDMA handsets.

The latest addition to AnalogicTechâ€s rapidly expanding Total Power Management IC product family supplies all the power requirements of next-generation CDMA handsets. The AAT2601 integrates a single-cell Lithium-ion battery charger, a 300mA buck converter, five low dropout (LDO) regulators, a reset function and an I2C interface“.

"As core currents rise in CDMA chipsets for mid range handset phones, it is essential that designers use more efficient power solutions with dynamic voltage adjustment to maximise system performance." said Siamak Bastami, product line director for AnalogicTech. "By bringing together a battery charger, a low-noise 300mA buck converter to power the base band core, five LDOs for all critical digital, analogue, transmit and receive functions, and an I2C interface to control voltages dynamically, the AAT2601 allows designers of CDMA handsets, including those targeted at the Chinese market, to optimise performance, reduce footprint and drive down cost."

Programmable via I2C
The battery charger in the AAT2601 is a dynamic device capable of powering the system while charging the battery.

This thermally regulated constant current/constant voltage linear charger combines a pass device, reverse blocking protection, high accuracy current and voltage regulation, charge status and charge termination functions.

Charging current, charge termination current and recharge voltage are programmable via an external resistor or by a standard I2C interface. By using the I2C interface to program output voltages, designers can easily optimise system performance.

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