Monolithic Power Systems MPQ2483DQ | Demoboard EVQ2483-Q-00A

Description

The MPQ2483 is a 55V, white LED driver suitable for either step-down or inverting step-up/down applications. It achieves 2.5A peak current over a wide input supply range with excellent load and line regulation. Currentmode 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 MPQ2483 incorporates both DC and PWM dimming onto a single control pin. The separate input reference ground pin allows for directenable and/or dimming control for a positive to negative power conversion.

The MPQ2483 is package in QFN10 (3 x 3)mm.

Features

• 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
• Output Short Circuit Protection
• Available in 10-Pin 3x3 QFN Package

Typical applications

• Automotive Lighting
• General LED Illuminations
• LCD Backlight Panels

More information

• Datasheet
• IC product information