MP4425A中文资料High-Efficiency, 1.5A, 36V, 2.2MHz, Synchronous, Step-Down LED Driver数据手册MPS规格书

描述 Description

The MP4425A is a high-frequency, synchronous, rectified, step-down, switch-mode white LED driver with built-in power MOSFETs. It offers a very compact solution to achieve 1.5A of continuous output current with excellent load and line regulation over a wide input supply range. The MP4425A has synchronous mode operation to get high efficiency.

Current mode operation provides fast transient response and eases loop stabilization.

Full protection features include over-current protection (OCP) and thermal shutdown (TSD).

The MP4425A requires a minimal number of readily available, standard external components, and is available in a space-saving QFN-13

(2.5mmx3mm) package.

特性 Features

• Wide 4V to 36V Operating Input Range
• 85mΩ/50mΩ Low RDS(ON) Internal Power MOSFETs
• High-Efficiency Synchronous Mode Operation
• Default 2.2MHz Switching Frequency
• PWM Dimming (Min 100Hz Dimming Frequency)
• Forced CCM Mode
• 0.2V Reference Voltage
• Internal Soft Start
• Fault Indication for LED Short, Open, and Thermal Shutdown
• Over-Current Protection (OCP) with Valley- Current Detection
• Thermal Shutdown
• CISPR25 Class 5 Compliant
• Available in a QFN-13 (2.5mmx3mm) Package