Monolithic Power Systems MP24830

Description

The MP24830 is a 90V white LED driver suitable for either step-down or inverting step-up/down applications. It supports a wide input range with excellent load and line regulation. Its programmable current limit provides customized applications with a wide power range. Current mode operation provides a fast transient response and eases loop stabilization. Fault condition protection includes thermal shutdown, cycle-by-cycle peak-current limiting, open-string protection, and output short-circuit protection.The MP24830 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-tonegative power conversion.The MP24830 requires a minimal number of readily-available external components. It is available in 14-pin SOIC and QFN packages.

Features

• Programmable Maximum Output Current
• Unique Step-Up/Down Operation (Buck-Boost Mode)
• Wide 4.5V-to-90V Operating Input Range for Step-Down Applications (Buck Mode)
• Adjustable Switching Frequency
• Analog and PWM Dimming
• 0.2V Reference Voltage
• 10μA Shutdown Mode
• No Minimum LED Quantity Required
• Stable with Low ESR Output Ceramic Capacitors
• Cycle-by-Cycle Over-Current Protection
• Thermal Shutdown Protection
• Open-String Protection
• Output Short-Circuit Protection
• Available in 14-Pin SOIC and QFN Packages

Typical applications

• Automotive LED Lighting
• LCD Backlight
• General LED Illumination

More information

• Datasheet
• IC product information