Datasheet > 电源电路 > 开关式稳压器或控制器> AAT1265IJS-5.0-T1

AAT1265IJS-5.0-T1

更新时间： 2024-02-15 16:51:10

品牌	Logo	应用领域
ANALOGICTECH		转换器稳压器开关式稳压器或控制器电源电路开关式控制器
页数	文件大小	规格书
13页	334K
描述
Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package

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技术参数
数据手册

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AAT1265IJS-5.0-T1 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Base Number Matches：	1

AAT1265IJS-5.0-T1 数据手册

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PRODUCT DATASHEET

AAT1265

SwitchReg^TM

Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package

General Description

Features

The AAT1265 is designed for single-cell or dual-cell alka-

line, NiMH, or NiCd or single-cell lithium-ion/polymer

(Li-Ion) battery-powered applications. It is a high effi-

ciency, synchronous, fixed frequency, step-up converter

with true output disconnect during shutdown (<1.0μA),

start-up inrush current limit, and short-circuit protection.

• 100mA Output from a Single AA Cell Input

• 250mA Output from a Dual AA Cell Input

• 400mA Output from a Single Lithium-Ion Cell Input

• V_INOperation Range: 0.8V to V_OUT

• Up to 93% Efficiency

• Low Start-Up Voltage: 1.0V Typical

• Internal Synchronous Rectifier

• Current Mode Control with Internal Feedback and

Compensation

The high 2MHz switching frequency and completely inte-

grated control circuitry minimize the total solution foot-

print area while maintaining excellent regulation, ripple,

and transient response throughout the full load range.

• 2MHz Fixed Switching Frequency

• 1A Current Limit

Light load switching frequency modulation and low qui-

escent current maintain high efficiency performance for

light load and sleep mode conditions.

• Maintains High Efficiency Over the Output Current

Range for Improved Battery Life

• Low 40μA No Load Bias Current

• True Load Disconnect

• Short-Circuit and Over-Current Protection

• Inrush Current Limit and Soft Start

• Low Shutdown Current: <1.0μA

• -40°C to +85°C Temperature Range

• 2.0x2.1mm SC70JW-8 Package

With a 1A peak switch current limit, the AAT1265 is

capable of delivering 100mA to the load with a single AA

cell, up to 250mA from a dual AA cell, or up to 400mA

from a single-cell lithium-ion battery. The device has a

1.0V start-up voltage with operation down to 0.8V.

The AAT1265 is available in a Pb-free, space-saving

2.0x2.1mm 8-pin SC70JW package and is rated over the

-40°C to +85°C temperature range.

Applications

• Bluetooth^®Headsets

• Digital Cameras

• Medical Instruments

• Mobile Handsets

• MP3 and Portable Music Players

Typical Application

V_IN

V_OUT

Dual-Cell to 3.3V Efficiency

vs. Output Current

AAT1265

100

2.2μH

V_IN= 3.0V

VCC

OUT

GND

V_IN= 2.4V V_IN= 2.0V

VIN

4.7μF

0.1

1.0

10.0

100.0

1000.0

Output Current (mA)

w w w . a n a l o g i c t e c h . c o m

1265.2007.12.1.4

12 3 4 5 6 7...13

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