TD2676 Datasheet | Techcode

Description   Features     The TD2676 is a 52 KHz fixed frequency monolithic step down switch mode regulator with a built in internal Power MOSFET. It achieves 2.5A continuous output current over a wide input supply range with excellent load and line regulation. The device includes a voltage reference, oscillation circuit, error amplifier, internal PMOS and etc. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An enable function, an over current protection function and a short circuit protection function are built inside. An internal pensation block is built in to minimize external ponent count. 2.5A Constant Output Current 80mΩ RDSON Internal Power PMOSFET Switch Up to 95% Efficiency Fixed 52KHz Frequency Wide 3.6V to 32V Input Voltage Range Output Adjustable from 0.8V to 30V Built in Frequency pensation Built in Thermal Shutdown Function Built in Current Limit Function SOP-8 Package is Available The minimum dropout up to 0.3V Applications  The TD2676 serves as ideal power supply units for portable devices.   z z Portable DVD LCD Monitor / TV z Battery Charger z ADSL Modem z Tele / Networking Equipment  Package Types                    Figure 1. Package Types of TD2676  December,  23,  2009.                                                        Techcode  Semiconductor  Limited                                                  .techcodesemi.  1  T  echcode®       2.5A 52KHz 32V PWM Buck DC/DC Converter Pin Configurations        Figure 2 Pin Configuration of TD2676 (Top View)  Pin Description   Pin Number 1,6, 8 2 3 5 7   Pin Name NC Vin SW FB EN Description Not Connect. Supply Voltage Input Pin. TD2676 operates from a 3.6V to 32V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. Power Switch Output Pin. SW is the switch node that supplies power to the output. Ground Pin. Care must be taken in layout. This pin should be placed outside of the...