Datasheet > AAT2511

AAT2511

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		转换器
页数	文件大小	规格书
20页	587K
描述
Dual 600mA, 1MHz Step-Down DC/DC Converter

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AAT2511 数据手册

AAT2511

Dual 600mA, 1MHz Step-Down DC/DC Converter

™

SystemPower

General Description

Features

The AAT2511 is a member of AnalogicTech's Total

Power Management IC™ (TPMIC™) product fam-

ily. It is comprised of two 1MHz step-down con-

verters designed to minimize external component

size and cost. The input voltage ranges from 2.7V

to 5.5V. The output voltage ranges from 0.6V to the

maximum applied input voltage and is externally

adjustable.

•

Up to 97% Efficiency

25µA Quiescent Current Per Channel

V_INRange: 2.7V to 5.5V

V_OUTRange: 0.6V to V_IN

Output Current: 600mA

Low R_DS(ON)0.4Ω Integrated Power Switches

Low Drop Out 100% Duty Cycle

1.0MHz Switching Frequency

Shutdown Current <1µA

Current Mode Operation

Internal Reference Soft Start

Short-Circuit Protection

Peak current mode control with internal compensa-

tion provides a stable converter with low ESR ceram-

ic output capacitors for extremely low output ripple.

Each channel has a low 25µA quiescent operating

current, which is critical for maintaining high effi-

ciency at light load.

Fast Turn-On (100µs Typical)

Over-Temperature Protection

3mm x 3mm, < 1mm high

TDFN33-12 Package

For maximum battery life, each converter's high-

side P-channel MOSFET conducts continuously

when the input voltage approaches dropout (100%

duty cycle operation).

-40°C to +85°C Temperature Range

Both regulators have independent input and

enable inputs.

Applications

The AAT2511 is available in a Pb-free, thermally-

enhanced 12-pin TDFN33 package, and is rated

over the -40°C to +85°C temperature range.

•

Cellular Phones

Digital Cameras

Handheld Instruments

Microprocessor/DSP Core/IO Power

PDAs and Handheld Computers

Portable Media Players

Typical Application

AAT2511 Efficiency

(V_IN= 3.3V)

V_IN

100

10μF

0.1μF

AAT2511

VIN1

VIN2

EN2

LX2

FB2

2.5V

1.8V

2.5V

EN1

LX1

FB1

4.7μH

10μH

1.8V

118k

187k

SGND1 SGND2

10μF

59.0k

GND1

GND2

0.1

100

1000

Load Current (mA)

2511.2006.05.1.4

12 3 4 5 6 7...20

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