MP3320B 2-5.5V, 4CH Synchronous Boost RGBW LED Driver QFN-14

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MP3320B 2-5.5V, 4CH Synchronous Boost RGBW LED Driver QFN-14

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pMPS MP3320B — Synchronous Boost RGBW LED Driver, 2-5.5V input, 4 channels, QFN-14./p

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MPS QFN-14 LED Drivers Boost LED Power Management

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MP3320B 2-5.5V, 4CH Synchronous Boost RGBW LED Driver QFN-14

The MPS MP3320B is a Synchronous Boost RGBW LED Driver. It operates from a 2 V to 5.5 V input and drives 4 LED strings. It is supplied in a QFN-14 package.

The MP3320B is an 4-channel, synchronous boost RGBW LED driver that operates across a wide 2V to 5.5V input voltage voltage (VIN) range.

Key Specifications

Part Number	MP3320B
Function	Synchronous Boost RGBW LED Driver
Input Voltage	2 V to 5.5 V
Channels	4
Interface	I²C
Package	QFN-14
Ordering Codes	MP3320B

Features

2V to 5.5V Input Voltage (VIN) Range
5.4V Max Output Voltage (VOUT)
4 Channels, Max 102mA/Ch
Enable/Disable for Each Channel
Internal Synchronous Boost Converter
8-Bit Analog Dimming for Each Channel
10-Bit Pulse-Width Modulation (PWM) Dimming for Each Channel
Configurable PWM Dimming Frequency (fPWM)
400kHz I2C-Compatible Interface
Configurable Phase Shift

Typical Application Circuit

Applications

Wearable Devices
LED Indicators

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.