MP3320N 1.8-5.5V, 3CH Charge Pump RGB LED Driver QFN-14

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MP3320N 1.8-5.5V, 3CH Charge Pump RGB LED Driver QFN-14

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pMPS MP3320N — Charge Pump RGB LED Driver, 1.8-5.5V input, 3 channels, QFN-14./p

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MPS QFN-14 LED Drivers LED Power Management

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MP3320N 1.8-5.5V, 3CH Charge Pump RGB LED Driver QFN-14

The MPS MP3320N is a Charge Pump RGB LED Driver. It operates from a 1.8 V to 5.5 V input and drives 3 LED strings. It is supplied in a QFN-14 package.

The MP3320N is a 3-channel RGB LED driver, with a wide 1.8V to 5.5V input voltage (VIN) range.

Key Specifications

Part Number	MP3320N
Function	Charge Pump RGB LED Driver
Input Voltage	1.8 V to 5.5 V
Channels	3
Interface	PWM
Package	QFN-14
Ordering Codes	MP3320N

Features

1.8V to 5.5V Input Voltage (VIN) Range
5.5V Max Output Voltage (VOUT)
3 Channels, Max 100mA/Channel
Internal, Self-Adaptive Charge Pump
1x, 1.5x, or 2x Charge Pump Auto-Transfer Rate
8-Bit Customized Default LED Current Amplitude for Each Channel
Separated Pulse-Width Modulation (PWM) Dimming for Each Channel
High Efficiency
LED Open Protection
LED Short Protection

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.