MP23701 4.2-24V, 2A, 1.5MHz Step-Down LED Driver QFN-8

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MP23701 4.2-24V, 2A, 1.5MHz Step-Down LED Driver QFN-8

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MPS Step-Down QFN-8 LED Drivers LED Power Management

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MP23701 4.2-24V, 2A, 1.5MHz Step-Down LED Driver QFN-8

The MPS MP23701 is a Step-Down LED Driver. It operates from a 4.2 V to 24 V input, is rated for 2 A and switches at 1.5 MHz. It is supplied in a QFN-8 package.

The MP23701 is a 24V, monolithic, synchronous, step-down, white LED driver with a built-in power MOSFET and rectifier.

Key Specifications

Part Number	MP23701
Function	Step-Down LED Driver
Input Voltage	4.2 V to 24 V
Current Rating	2 A
Switching Frequency	1.5 MHz
Peak Efficiency	97%
Package	QFN-8
Ordering Codes	MP23701

Features

4.2V to 24V Wide Input Range
Synchronous Step-Down Converter
100mΩ Internal High-Side Power MOSFET
80mΩ Internal Low-Side Synchronous Rectifier
Peak-Current Mode Control
Up to 2A Continuous Output Current
100mV Feedback Voltage
Up to 97% Efficiency
Fixed 1.5MHz Switching Frequency
Analog Dimming

Typical Application Circuit

Applications

Infrared LED Drivers
General LED Drivers
Flashlights

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.