The PT4205 is a continuous inductor current conduction mode step-down constant current source for

Drive one or more LEDs in series. PT4205 input voltage range from 5V to

30 volts with 200mV±3 reference voltage, output current through an external

Resistance setting, up to 1.2 amps. According to different input voltage and external

Part of the device, the PT4205 can drive LEDs up to tens of watts.

The PT4205 has a built-in power switch and uses high-end current sampling to set the average LED power level.

stream, dedicated dimming terminal DIM pin can accept analog dimming and wide-range PWM

Dimming. Built-in over-temperature soft protection function, automatically lowers the LED when the temperature is too high

current, improve system reliability and avoid flicker problems that can be caused by high temperature operation.

PT4205 is available in SOT89-5 and ESOP8 packages

Features

z Few external components

z Input voltage range 5V to 30V

z Maximum output current of 1.2A

z 200mV±3% current reference

z Multiplexing DIM pins for LED switching, analog dimming and PWM dimming

z LED open circuit natural protection

z Peak efficiency up to 97%_

z Over temperature soft protection to reduce flicker

z ESOP8 package with enhanced heat dissipation capability can be used for high power drive

application

z Low-voltage LED spotlights instead of halogen lamps

z Car LED lights

z LED backup light

z LED signal lights

PT4205 PT4211 PT4115 PT4515 PT4119 PT4238 PT4121 Full range of direct supply from stock, welcome to consult