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