Datasheet > TD6811

TD6811

更新时间： 2024-09-17 11:46:35

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其他 - ETC		稳压器
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描述
1.5MHz 1.2A Synchronous Step-Down Regulator Dropout

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TD6811 数据手册

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DATASHEET

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1.5MHz 1.2A Synchronous Step-Down Regulator

Dropout

TD6811

汪工 TEL:13828719410 QQ:1929794238

General Description Features

The TD6811 is a high efficiency monolithic 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 TD6811 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.

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 TD6811 is available in

TSOT23-5 package.

High Efficiency: Up to 96%

High Efficiency at light loads

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

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

TSOT235

Figure 1. Package Types of TD6811

www.tongchuangwei.com

July, 02, 2011

Techcode Semiconductor Limited

12 3 4 5 6 7...17

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