AAT2603数据手册集成电路（IC）的电源管理-专用规格书PDF

描述 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). DC-DC2 (Buck2) is a 600mA regulator with a two step dynamic output voltage capability. One option allows the output voltage of DC-DC2 (Buck2) to be set to either 1.0V or 1.3V with the SELB2 logic pin.
LDO regulators LDO1 and LDO2 can supply up to 400mA of load current with output voltages adjustable down to 1.5V. LDO regulators LDO3 and LDO4 can supply up to 200mA of current and provide good noise and power supply rejection. LDO3 and LDO4 have output voltages externally adjustable down to 1.2V.
The AAT2603 is available in a Pb-free thermally enhanced 28-pin TQFN44 package and is rated for operation over the -40°C to +85°C temperature range.

特性 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 Two Voltage Levels 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=’0’]/1.3V[SELB2=’1’]
·Factory Programmable to any Two Voltage Levels from 0.6V to 4.0V
·Fixed 1.5MHz Switching Frequency
·Internally Compensated Current Mode Control
·High Efficiency over the Entire Load Range
·Four LDO Regulators
·LDO1: 400mA LDO
·LDO2: 400mA LDO
·LDO3: 200mA, Low Noise LDO
·LDO4: 200mA, Low Noise LDO
·Fast Turn-On and Turn-Off time
·Short Circuit and Over-Current Protection
·Over-Temperature Protection
·Temperature Range: -40°C to +85°C
·TQFN44-28 Package

简介

AAT2603属于集成电路（IC）的电源管理-专用。由制造生产的AAT2603电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。