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AAT2603 - Total Power Solution

General Description

The AAT2603 is a highly integrated power management solution for handheld mobile systems.

It provides six regulated voltages from a single-cell Lithium-ion/polymer battery or a 5V supply.

Key Features

  • VIN Range: 2.7V to 5.5V.
  • Two Step-Down Regulators.
  • DC-DC1(Buck1): 1.2A, Low Dropout Voltage.
  • Externally Adjustable: VFBB1 = 0.6V.
  • VOUT Range: 0.6V to VINB1.
  • Fixed: VOUT = 3.3V.
  • Factory Programmable to any Voltage Level from 0.6V to 4.0V.
  • DC-DC2(Buck2): 0.6A, Low Dropout Voltage.
  • Externally Adjustable: VFBB2 = 0.6V.
  • VOUT Range: 0.6V to VINB2.
  • Fixed: VOUT = 1.0V[SELB2=’1’]/1.3V[SELB2=’0’].
  • Factory Programmable.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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DATA SHEET AAT2603 Total Power Solution for Portable Applications General Description The AAT2603 is a highly integrated power management solution for handheld mobile systems. It provides six regulated voltages from a single-cell Lithium-ion/polymer battery or a 5V supply. The six outputs are produced by six regulators; two switching step-down regulators and four low-dropout (LDO) regulators. Each voltage regulator has its own independent enable pin. The high efficiency step-down regulators are fully integrated and switch at a high 1.5 MHz fixed frequency. They automatically transition to variable frequency operation at light loads for improved efficiency. DC-DC1 (Buck1) is designed for high output current and low dropout voltage (200mV at 1.2A).