MP24833-A

3A, 55V, White LED Driver Suitable for Step-Down with Current Mode Operation

Datasheet

Description

The MP24833-A is a 55V, 3A, white LED driver suitable for step-down, inverting step‑up/step-down, and step-up applications. The MP24833-A achieves 3A of output current with excellent load and line regulation over a wide input supply range.

Current mode operation provides a fast transient response and eases loop stabilization. Full protection features include thermal shutdown, cyclebycycle peak current limiting, open-string protection, and output short-circuit protection (SCP).

The MP24833-A incorporates both DC and PWM dimming into a single control pin. The separate input reference ground pin allows for direct enable and/or dimming control for a positive-to-negative power conversion.

The MP24833-A requires a minimal number of readily available, standard, external components and is available in a SOIC-8 EP package.

Features & Benefits

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)
0.15O 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
Cycle-by-Cycle Over-Current Protection (OCP)
Thermal Shutdown Protection
Open-String Protection
Output Short-Circuit Protection (SCP)
Available in a SOIC-8 EP Package

Active Part Numbers:

MP24833-AGN-P MP24833-AGN-Z

Meaning of P & Z

Evaluation Tools

EV24833-A-N-00A Evaluation Kit 3A, 55V White LED Driver

The EV24833-A-N-00AEvaluation Board is designed to demonstrate the capabilities of MP24833-A. The MP24833-A is a 55V, 3A, white LED driver suitable for either step-down or inverting step‑up/down applications.

EV24833-A-N-00A is compatible with step-down (Buck) and inverting step-up/down (Buck-boost) applications.

For step-down application, short “JP1”, open “JP2”, connect LED load to “LED+” and “LED-”
For step-up/down application, short “JP2”, open “JP1”, connect LED load to “LED+” and “LED-”

$25.00
+ tax

Design Resources