P1583

DESCRIPTION

The UTC P1583 is a fixed 380kHz frequency, current mode, PWM

controller. It achieves 2.5A continuous output current over a wide input

supply range with excellent load and line regulation. Equipped with an

external compensation pin, this device offers user flexibility in

determining loop dynamic.

The UTC P1583 integrates controls, monitoring and protection

functions into a single 8-pin package to provide a low cost and perfect

power solution. The device provides maximum 24V operating input

voltage.

An internal 1.245V reference provides low output voltage down to

1.245V for further applications. An internal soft-start prevents the output

voltage from overshoot as well as limiting the input current. The

controller’s over-current protection monitors the output current by using

the voltage drop across a current sensing resistor. Additional under

voltage protections monitor the voltage on FB pin for short-circuit

protections.

The UTC P1583 provides fast transient respond and requires very

few external devices for operation.

FEATURES

* 2.5A output current

* 380kHz frequency of operation

* 15μA shutdown supply current

* Output adjustable from 1.245 to 21V

* Frequency foldback at short circuit

* Thermal shutdown

规格书P1583