MPQ3369 3.5-36V, 6CH Maximum 100mA/Ch Boost WLED Driver QFN-24

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MPQ3369 3.5-36V, 6CH Maximum 100mA/Ch Boost WLED Driver QFN-24

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pMPS MPQ3369 — Maximum 100mA/Ch Boost WLED Driver, 3.5-36V input, 100 mA output, 6 channels, QFN-24./p

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MPS QFN-24 LED Drivers Boost WLED LED Power Management

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MPQ3369 3.5-36V, 6CH Maximum 100mA/Ch Boost WLED Driver QFN-24

The MPS MPQ3369 is a Maximum 100mA/Ch Boost WLED Driver. It operates from a 3.5 V to 36 V input, is rated for 100 mA and drives 6 LED strings. It is supplied in a QFN-24 package.

The MPQ3369 is a step-up converter with six channel current sources.

Key Specifications

Part Number	MPQ3369
Function	Maximum 100mA/Ch Boost WLED Driver
Input Voltage	3.5 V to 36 V
Current Rating	100 mA
Channels	6
Interface	I²C
Package	QFN-24
Ordering Codes	MPQ3369

Features

3.5V to 36V Input Voltage Range
6 Channels with Max 100mA per Channel
Internal 100mΩ, 50V MOSFET
Configurable Switching Frequency Up to 2.2MHz
External Sync SW Function
Multi-Dimming Operation Mode through PWM Input, Including: o Direct PWM Dimming o Analog Dimming o Mix Dimming with 25% or 12.5% Transfer Point
15000:1 Dimming Ratio in PWM Dimming at fPWM ≤ 200Hz
200:1 Dimming Ratio at Analog Dimming through PWM Dimming Signal Input
Excellent EMI Performance, Frequency Spread Spectrum
I2C Interface

Typical Application Circuit

Applications

Tablets/Notebooks

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.