MP24833 4.5-55V, 3A, 200kHz White LED Driver SOIC8E

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MP24833 4.5-55V, 3A, 200kHz White LED Driver SOIC8E

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pMPS MP24833 — White LED Driver, 4.5-55V input, 3 A output, SOIC8E./p

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MPS SOIC8E LED Drivers LED Power Management

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MP24833 4.5-55V, 3A, 200kHz White LED Driver SOIC8E

The MPS MP24833 is a White LED Driver. It operates from a 4.5 V to 55 V input, is rated for 3 A and switches at 200 kHz. It is supplied in a SOIC8E package.

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

Key Specifications

Part Number	MP24833
Function	White LED Driver
Input Voltage	4.5 V to 55 V
Current Rating	3 A
Switching Frequency	200 kHz
Interface	PWM
Package	SOIC8E
Ordering Codes	MP24833

Features

3A Maximum Output Current
Unique Step-Up/Down Operation (Buck- Boost Mode)
Wide 4.5V-to-55V Operating Input Range for Step-Down Applications (Buck Mode)
0.19Ω Internal Power MOSFET Switch
Fixed 200kHz Switching Frequency
Analog and PWM Dimming
0.198V 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.