[Techcode]

General Description
The TD1583 is a 380 KHz fixed frequency monolithic step down switch mode regulator with a built in internal Power MOSFET. It achieves 3A 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 TD1583 serves as ideal power supply units for portable devices.

FEATUREs
▪ 3A Constant Output Current
▪ 80mΩ RDSON Internal Power PMOSFET Switch
▪ Up to 95% Efficiency
▪ Fixed 380KHz Frequency
▪ Wide 3.6V to 28V Input Voltage Range
▪ Output Adjustable from 1.222V to 26V
▪ 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