TD6810,TD6811,TD6817

TD泰德一级代理 TD6811 TD6817   
TD6811完整型号：TD6811

TD6810 品牌：TD/泰德    封装SOT23-5

TD6811 品牌：TD/泰德    封装SOT23-5

TD6817  品牌：TD/泰德    封装SOT23-5

General Description

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. ** 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.

Features  

z High Efficiency: Up to 96%

z High Efficiency at light loads

z Very Low Quiescent Current: Only 20uA During

Operation

z 1.2A Output Current

z 2.5V to 5.5V Input Voltage Range

z 1.5MHz Constant Frequency Operation

z No Schottky Diode Required

z Low Dropout Operation: ** Duty Cycle

z 0.6V Reference Allows Low Output Voltages

z Shutdown Mode Draws  ≤1uA Supply Current

z Current Mode Operation for Excellent Line and Load

Transient Response

z Overtemperature Protected

z TSOT23-5  Package is Available

Applications

z Cellular Telephones

z Personal Information Appliances

z Wireless and DSL Modems

z Digital Still Cameras

z MP3 Players

z Portable Instruments

TD泰德一级代理