MP3359C 3.5-40V, 160mA, 4CH Boost WLED Controller QFN-20

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MP3359C 3.5-40V, 160mA, 4CH Boost WLED Controller QFN-20

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pMPS MP3359C — Boost WLED Controller, 3.5-40V input, 160 mA output, 4 channels, QFN-20./p

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MPS QFN-20 LED Drivers Boost WLED LED Controller

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MP3359C 3.5-40V, 160mA, 4CH Boost WLED Controller QFN-20

The MPS MP3359C is a Boost WLED Controller. It operates from a 3.5 V to 40 V input, is rated for 160 mA and drives 4 LED strings. It is supplied in a QFN-20 package.

The MP3359C is a step-up controller with four channel current sources.

Key Specifications

Part Number	MP3359C
Function	Boost WLED Controller
Input Voltage	3.5 V to 40 V
Current Rating	160 mA
Channels	4
Interface	PWM
Package	QFN-20
Ordering Codes	MP3359C

Features

3.5V to 40V Input Voltage (VIN) Range
4 Channels with a Maximum of 160mA per Channel
Configurable Switching Frequency (fSW) Up to 2.2MHz
External Sync Switching (SW) Function
Pulse-Width Modulation (PWM) Dimming
Analog Dimming
Deep Dimming Ratio
Excellent EMI Performance and Frequency Spread Spectrum (FSS)
Fixed 100µs Delay Time between LED Current Channels during PWM Dimming (Replace Phase Shift)
2.5% Current Matching

Typical Application Circuit

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.