MP24183

The Future of Analog IC Technology DESCRIPTION The MP24183 is a 55V, 1A, white LED driver suitable for either step-down or inverting step-up/down applications. It achieves 1A peak 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, cycle-by-cycle peak current limiting, input over voltage protection, open strings protection and output short circuit protection. The MP24183 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 MP24183 requires a minimum number of readily available standard external components and is available in a 10-pin 3mm x 3mm QFN package. MP24183 1A, 55V, Programmable Frequency White LED Driver FEATURES  1A 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)  0.28Ω Internal Power MOSFET Switch  Adjustable Switching Frequency  Analog and PWM Dimming  0.198V Reference Voltage  5μA Shutdown Mode  No minimum LED required  Stable with Low ESR Output Ceramic Capacitors  Cycle-by-Cycle Over Current Protection  Thermal Shutdown Protection  Open Strings Protection  Input Over Voltage Protection  Output Short Circuit Protection  Availab...