MP3326 4-16V, 50mA, 16CH LED Driver QFN-24

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MP3326 4-16V, 50mA, 16CH LED Driver QFN-24

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pMPS MP3326 — LED Driver, 4-16V input, 50 mA output, 16 channels, QFN-24./p

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MPS QFN-24 LED Drivers LED Power Management

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MP3326 4-16V, 50mA, 16CH LED Driver QFN-24

The MPS MP3326 is a LED Driver. It operates from a 4 V to 16 V input, is rated for 50 mA and drives 16 LED strings. It is supplied in a QFN-24 package.

The MP3326 is a 16-channel WLED driver that can operate from a wide 4V to 16V input voltage range.

Key Specifications

Part Number	MP3326
Function	LED Driver
Input Voltage	4 V to 16 V
Current Rating	50 mA
Channels	16
Interface	I²C
Package	QFN-24
Ordering Codes	MP3326

Features

Wide 4V to 16V Input Voltage Range
16 Channels, 50mA/Ch Maximum (VIN ≥ 4.5V)
LED Current Configured by External Resistor
6-Bit Analog Dimming for Each Channel
12-Bit PWM Dimming for Each Channel
Selectable 220Hz, 250Hz, 280Hz, or 330Hz PWM Dimming Frequency
Refresh Signal Output
I2C Interface
10 Addresses Configurable via External Resistor
Configurable LED Current Slew Rate

Typical Application Circuit

Applications

RGB Drivers
LED Indicators
Instrument Clusters
General Displays

Design Notes

Channel-to-channel current matching sets backlight uniformity; check the matching spec at the current you will actually run.
In boost topologies the OVP threshold must clear the worst-case forward voltage of the longest string, including temperature and binning spread.
Keep PWM dimming above 200 Hz to stay clear of visible flicker, and away from the audio band if the product has a speaker.
Size the inductor and output capacitor for the string current ripple, not the total LED current.