Monolithic Power Systems MPQ2483DS | Demoboard EVQ2483-S-00A

Description

The MPQ2483 is a 55V, white LED driversuitable for either step-down or invertingstep-up/down applications. It achieves 2.5Apeak current over a wide input supply rangewith excellent load and line regulation. Currentmode operation provides fast transientresponse and eases loop stabilization. Faultcondition protection includes thermal shutdown,cycle-by-cycle peak current limiting, input overvoltage protection, open strings protection andoutput short circuit protection.The MPQ2483 incorporates both DC and PWMdimming onto a single control pin. The separateinput reference ground pin allows for directenable and/or dimming control for a positive tonegative power conversion.The MPQ2483 is package in SO-14.

Features

-Unique Step-up/down Operation (Buck-Boost Mode)

• Wide 4.5V to 55V Operating Input Range forStep-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 CeramicCapacitors
• Cycle-by-Cycle Over Current Protection
• Thermal Shutdown Protection
• Open Strings Protection
• Output Short Circuit Protection
• Available in 14-Pin SO14 Package

Typical applications

• LCD Backlight Panels
• General LED Illuminations
• Automotive Lighting

More information

• Datasheet
• IC product information