MP4012 8-55V High-Current Accuracy WLED Controller SOIC

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MP4012 8-55V High-Current Accuracy WLED Controller SOIC

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MPS SOIC LED Drivers WLED LED Controller Power Management

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MP4012 8-55V High-Current Accuracy WLED Controller SOIC

The MPS MP4012 is a High-Current Accuracy WLED Controller. It operates from a 8 V to 55 V input. It is supplied in a SOIC package.

The MP4012 is a current mode controller designed for driving the high brightness Light Emitting Diodes (LEDs) from extremely wide input voltage 8V~55V.

Key Specifications

Part Number	MP4012
Function	High-Current Accuracy WLED Controller
Input Voltage	8 V to 55 V
Interface	PWM
Package	SOIC
Ordering Codes	MP4012

Features

Constant-current WLED Controller
8V~55V Input Voltage
Constant Frequency Mode Or Constant Off Time Mode
Programmable Switching Frequency or Off- Time
Leading Edge Blanking for Current Sense
High Frequency PWM Dimming and Analog Dimming
Output-to-Input Disconnect in Shutdown Mode
Synchronization Function
Programmable Over Voltage Protection
Open Load Hiccup Mode Protection

Typical Application Circuit

Applications

LCD Backlighting Applications
DC/DC LED Controller Applications
General Illumination
Industrial Lighting

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.