TD1591 _{2A 380KHz 32V PWM Buck DC/DC Converter}

(DATASHEET)

The TD1591 is a 380 KHz fixed frequency monolithic step down switch mode regulator with a built in internal Power MOSFET. It achieves 2A 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 compensation block is built in to minimize external component count.The TD1591 serves as ideal power supply units for portable devices.

Features

* 2A Constant Output Current

* 80mΩ R_DSON Internal Power PMOSFET Switch

* Up to 95% Efficiency

* Fixed 380KHz Frequency

* Wide 3.6V to 32V Input Voltage Range

* Output Adjustable from 1.222V to 30V

* Built in Frequency Compensation

* Built in Thermal Shutdown Function

* Built in Current Limit Function

* SOP-8 Package is Available

* The minimum dropout up to 0.3V

Applications

* Portable DVD

* LCD Monitor / TV

* Battery Charger

* ADSL Modem

* Telecom / Networking Equipment

Typical Application Circuit