LN5921 Constant-Current White LED Bias

Description

Ultra Low-Dropout, Constant-Current White LED Bias LN5921 * General .
The LN5921 is a high performance ultra low- dropout constant current bias supply for white LEDs.

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LN5921 Datasheet Preview — Preview of LN5921 PDF

Datasheet Specifications

Part number: LN5921
Manufacturer: natlinear
File Size: 387.87 KB
Datasheet: LN5921-natlinear.pdf
Description: Constant-Current White LED Bias

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

Applications

* For dimming control, an enable input pin is controlled by processor GPIO output pulses for 32 level linear current. Using a low frequency PWM waveform to this enable input pin also controls the average LED current which is proportional to the PWM duty. The LN5921 is suitable for single cell Li-ion

LN5921 Distributors

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LN5921 Constant-Current White LED Bias natlinear

natlinear LN5921-like datasheet