MP24833-A 4.5-55V, 3A, 210kHz White LED Driver SOIC

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MP24833-A 4.5-55V, 3A, 210kHz White LED Driver SOIC

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pMPS MP24833-A — White LED Driver, 4.5-55V input, 3 A output, SOIC./p

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MPS SOIC LED Drivers LED Power Management

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MP24833-A 4.5-55V, 3A, 210kHz White LED Driver SOIC

The MPS MP24833-A is a White LED Driver. It operates from a 4.5 V to 55 V input, is rated for 3 A and switches at 210 kHz. It is supplied in a SOIC package.

The MP24833-A is a 55V, 3A, white LED driver suitable for step-down, inverting step-up/step- down, and step-up applications.

Key Specifications

Part Number	MP24833-A
Function	White LED Driver
Input Voltage	4.5 V to 55 V
Current Rating	3 A
Switching Frequency	210 kHz
Interface	PWM
Package	SOIC
Ordering Codes	MP24833-A

Features

3A Maximum Output Current
Unique Step-Up/Step-Down Operation (Buck-Boost Mode)
Wide 4.5V-to-55V Operating Input Range for Step-Down Applications (Buck Mode)
0.15Ω Internal Power MOSFET Switch
Fixed 210kHz Switching Frequency
Analog and PWM Dimming
0.2V Reference Voltage
6μA Shutdown Mode
No Minimum Number of LEDs Required
Stable with Low ESR Output Ceramic Capacitors

Typical Application Circuit

Applications

General LED Illumination
LCD Backlight Panels
Notebook Computers
Automotive Internal Lighting
Portable Multimedia Players

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.