LN5921 Datasheet (natlinear) - Constant-Current White LED Bias

LN5921, Constant-Current White LED Bias

The LN5921 is a high performance ultra low- dropout constant current bias supply for white LEDs.

It can be used as an alternative to the simple ballast resistors in conventional parallel white LEDs applications.

For dimming control, an enable input pin is controlled by processor GPIO output pulses f

LN5921 Features

* Ultra Low 200mV Dropout at 20mA

* 0.6% High Accuracy Current Matching

* 20mA Full Scale Current

* 32 Level Linear Current Brightness Control

* PWM Brightness Control

* 2.5V to 5.5V Supply Voltage Range

* Thermal shutdown function

* Under-voltage protection function