Datasheet > TD6811B

TD6811B

更新时间： 2024-11-26 11:46:35

品牌	Logo	应用领域
其他 - ETC		稳压器
页数	文件大小	规格书
17页	952K
描述
1.5MHz 1.2A Synchronous Step-Down Regulator Dropout

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数据手册

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TD6811B 数据手册

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DATASHEET

T^echcode®

1.5MHz 1.2A Synchronous Step-Down Regulator

Dropout

汪工 TEL:13828719410 QQ:1929794238

General Description Features

TD6811B

The TD6811B is a high efficiency monolithic

High Efficiency: Up to 96%

High Efficiency at light

synchronous buck regulator using a constant frequency,

current mode architecture. The device is available in an

adjustable version and fixed output voltages of 1.5V and

1.8V. Supply current during operation is only 20mA and

drops to ≤1mA in shutdown. The 2.5V to 5.5V input

voltage range makes the TD6811B ideally suited for

single Li-Ion battery-powered applications. 100% duty

cycle provides low dropout operation, extending battery

life in portable systems.Automatic Burst Mode operation

increases efficiency at light loads, further extending

battery life.

loads(Vin=5V,Vout=3.3V,Ilod=3mA η>82%)

Very Low Quiescent Current: Only 20uA During

Operation

1.2A Output Current

2.5V to 5.5V Input Voltage Range

1.5MHz Constant Frequency Operation

No Schottky Diode Required

Low Dropout Operation: 100% Duty Cycle

0.6V Reference Allows Low Output Voltages

Shutdown Mode Draws ≤1uA Supply Current

Current Mode Operation for Excellent Line and Load

Transient Response

Switching frequency is internally set at 1.5MHz, allowing

the use of small surface mount inductors and capacitors.

The internal synchronous switch increases efficiency and

eliminates the need for an external Schottky diode. Low

output voltages are easily supported with the 0.6V

feedback reference voltage. The TD6811B is available in

TSOT23-5 package.

Overtemperature Protected

TSOT23-5 Package is Available

Applications

Cellular Telephones

Personal Information Appliances

Wireless and DSL Modems

Digital Still Cameras

MP3 Players

Portable Instruments

Package Types

TSOT23‐5

Figure 1. Package Types of TD6811B

www.tongchuangwei.com

December, 20, 2009

Techcode Semiconductor Limited

12 3 4 5 6 7...17

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