Datasheet > AAT1217ICA-5.0-T1

AAT1217ICA-5.0-T1

更新时间： 2024-02-21 00:45:22

品牌	Logo	应用领域
ANALOGICTECH		转换器升压转换器
页数	文件大小	规格书
13页	436K
描述
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter

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技术参数
数据手册

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AAT1217ICA-5.0-T1 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.77
Base Number Matches：	1

AAT1217ICA-5.0-T1 数据手册

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AAT1217

600mA, 1.2MHz, Micropower

Synchronous Step-Up Converter

™

SwitchReg

General Description

Features

The AAT1217 a high efficiency, synchronous, fixed

frequency, step-up converter designed for single-

cell or dual-cell alkaline, NiMH, or NiCd battery-

powered applications. The high 1.2MHz switching

frequency and completely integrated control cir-

cuitry minimize the total solution footprint area

while maintaining excellent regulation, ripple, and

transient response throughout the full load range.

•

V_INOperation Range: 0.5V to V_OUT

V_OUTRange: 2.5V to 5.5V

100mA Output from a Single AA Cell Input

400mA Output from a Dual AA Cell Input

High Efficiency: Up to 93% Efficiency

Low Start-Up Voltage: 0.85V Typical

Internal Synchronous Rectifier

— V_OUT≤ 4.5V: No External Schottky Diode

Fixed Frequency Pulse Width Modulation

(PWM) Current-Mode Control Scheme with

Internal Compensation

1.2MHz Fixed Switching Frequency

1.2A Current Limit

Light Load Pulse Skipping Mode Operation

Low 80µA No Load Input Current

Over-Current Protection

EMI Reduction Anti-Ringing Control Circuitry

Low Shutdown Current: <1.0µA

-40°C to +85°C Ambient Temperature Range

Low Profile (1mm) TSOT23-6 Package

•

Pulse skipping mode operation and low quiescent

current allow the AAT1217 to maintain high effi-

ciency performance for light load and sleep mode

conditions. With a 1.2A peak switch current limit,

the AAT1217 is capable of delivering 100mA to the

load from a single AA cell or up to 400mA from dual

AA cells. The AAT1217 has a 0.85V start-up volt-

age with operation down to 0.5V.

•

The AAT1217 is available in a Pb-free, space-sav-

ing low profile (1mm) 6-pin TSOT23 package and

is rated over the -40°C to +85°C ambient tempera-

ture range.

Applications

•

Cellular and Smart Phones

Digital Still and Video Cameras

Microprocessors and DSP Core Supplies

MP3 Player

Portable Instruments

Wireless and DSL Modems

Typical Application

4.7µH

V_OUT

V_IN: 0.85V

3.3V,100mA

VIN

VOUT

1MΩ

C_OUT

4.7µF

C_OUT

4.7µF

1MΩ

AAT1217-1.2

AAT1217-3.3

C_IN

4.7µF

C_IN

4.7µF

1.02MΩ

SHDN

604kΩ

GND

1217.2007.07.1.0

12 3 4 5 6 7...13

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