Monolithic Power Systems MP2480

Description

The MP2480 is step-down switching regulator that delivers a constant current of up to 3A to high-power LEDs. It integrates a high-side, high-voltage power MOSFET with a current limit of 4.3A. The wide 5V to 36V input range accommodates a variety of step-down applications, making it ideal for general lighting and LCD backlighting applications. Hysteretic current-mode control helps provide for a very fast response, which makes the 20kHz dimming frequency possible. MPS’s proprietary feedback control minimizes the number of external components while delivering an LED current with a typical accuracy of ±3%.The switching frequency goes up to 2MHz, thus permitting smaller components. Thermal shut down, and short circuit protection providereliable fault-tolerant operation. A 160µA quiescent current allows for use in batterypowered applications.The MP2480 is available in SOIC8-EP with an exposed pad on the bottom.

Features

• Wide 5V to 36V Operating Input Range
• Up to 95% Efficiency
• Hysteretic Control with No Compensation
• No Output Capacitor Required
• ±3% LED Current Accuracy
• Up to 2MHz Switching Frequency
• Up to 20kHz Dimming Frequency
• 200mV Reference Voltage
• Short-Circuit Protection with Integrated High-Side MOSFET
• Thermal Shut Down
• Available in SOIC8-EP

Typical applications

• High Power LED Driver
• General Lighting
• LCD Backlighting

More information

• Datasheet
• IC product information