MPQ3323B-AEC1 4.5-16V, 320mA, 4CH LED Driver QFN-24

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MPQ3323B-AEC1 4.5-16V, 320mA, 4CH LED Driver QFN-24

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pMPS MPQ3323B-AEC1 — LED Driver, 4.5-16V input, 320 mA output, 4 channels, QFN-24, AEC-Q100./p

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Automotive AEC-Q100 MPS QFN-24 LED Drivers LED Power Management

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MPQ3323B-AEC1 4.5-16V, 320mA, 4CH LED Driver QFN-24

The MPS MPQ3323B-AEC1 is a LED Driver. It operates from a 4.5 V to 16 V input, is rated for 320 mA and drives 4 LED strings. It is supplied in a QFN-24 package. The part is AEC-Q100 qualified.

The MPQ3323B is a 4-channel LED driver that can operate from a wide 4.5V to 16V input voltage (VIN) range.

Key Specifications

Part Number	MPQ3323B-AEC1
Function	LED Driver
Input Voltage	4.5 V to 16 V
Current Rating	320 mA
Channels	4
Interface	I²C
Package	QFN-24
Qualification	AEC-Q100
Ordering Codes	MPQ3323B-AEC1

Features

Wide 4.5V to 16V Input Voltage (VIN) Range
4 Channels, Max 320mA/Ch
LED Current (ILED) Configured via External Resistor
6-Bit Analog Dimming for Each Channel
12-Bit Pulse-Width Modulation (PWM) Dimming for Each Channel
Selectable 220Hz, 250Hz, 280Hz, or 330Hz PWM Dimming Frequency (fPWM)
Refresh Signal Output
I2C Interface
10 Addresses Configurable via External Resistor
Configurable ILED Slew Rate

Typical Application Circuit

Applications

Automotive Displays
Instruments Clusters

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.