PR4403 Datasheet (PREMA) - 0.9V Boost Driver

PR4403, 0.9V Boost Driver

PR4403 test LS Vout n.c.

1 2 3 4 81 Vcc 7 n.c.

6 Vout 5 Gnd Package SO8 (150 mil) Pin No 1 2 3 4 5 6 7 8 Pin Name Pin Function Description test test pin - do not connect LS LS - Enable Pin Vout Output voltage, LED connection Connect both pin 3 and 6! n.c.

LED Driver PR4403 0.9 V Boost Driver PR4403 for White LEDs in Solar Lamps The PR4403 is a single cell step-up converter for white LEDs operating from a single rechargeable cell of 1.2 V supply voltage down to less than 0.9 V.

An adjustable light threshold input enables an automatic switching of the LED light, e.

by an additional light sensor or by the battery charging solar cell itself.

Only three external components are required for operation of a white LED.

The PR4403 is recommended for m

PR4403 Features

* only one 1.2 V battery cell needed

* 250 mA peak output current

* low number of external components

* battery deep discharge protection

* adjustable light threshold for switching on APPLICATIONS

* Solar garden lamps: The "classic" application for PR