MP24833

MP24833

NOT RECOMMENDED FOR NEW DESIGNS

3A, 55V, White LED Driver

ALTERNATIVE PART

NRFND Datasheet

MP24833 continues to be in production for existing customers. Please consider this alternative for new designs:

MP24833-AGN-Z

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

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

… and many more!

Parameters Description

Vin (min) (V)
4.5
Vin (max) (V)
55
Vout (max) (V)
55
Open LED Protection
Yes
Type
Buck, Buck-Boost
Iout (max) (A)
3
Vfb (V)
0.198
fsw (max) (kHz)
200
Iq (mA)
0.6
Ishutdown (µA)
6
Rds(on) (mΩ)
190
Sync
No
Grade
Catalog
Power Range Defined
No
Active PFC
No
Isolated
No
Isolated LLC
No
Isolated Flyback
No
Non-Isolated
No
Secondary Synchronous Rectification
No
Internal MOSFET
No
Low Side Rectification
No
High Side Rectification
No

The MP24833 is a 55V, 3A, white LED driver suitable for step-down, inverting step‑up/down and step-up applications. It achieves 3A output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes thermal shutdown, cyclebycycle peak current limiting, open strings protection and output short circuit protection.

The MP24833 incorporates both DC and PWM dimming onto 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 requires a minimal number of readily-available standard external components and is available in an SOIC8E package.