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DESCRIPTION

The MP4541 is a high-efficiency, synchronous

step-down converter with integrated power

MOSFETs. The device provides 0.8A of output

current (IOUT) in a buck topology from an input

power supply of up to 80V.

The MP4541 features constant-on-time (COT)

control, which provides fast transient response

and facilitates loop stabilization. The

configurable operation frequency can be set

between 100kHz and 1MHz via an external

resistor.

The device supports high-efficiency pulse-skip

mode (PSM) while operating under light-load

conditions. The valley current limit circuits

protect against overload and short-circuit

conditions.

The MP4541 is available in an SOIC-8EP

package.

FEATURES

? 8V to 80V Input Voltage Range

? 1V to 30V Output Voltage Range

? 90 Maximum Operation Duty Cycle

? 625mΩ/265mΩ Internal Power MOSFETs

? Constant-On-Time (COT) Control

? 100kHz to 1MHz Configurable Frequency

? Internal Soft Start and Loop Compensation

? Over-Current Protection (OCP)

? Short-Circuit Protection (SCP) with Hiccup

Mode

? High-Efficiency Pulse-Skip Mode (PSM)

under Light-Load Conditions

? Available in an SOIC-8EP Package

APPLICATIONS

? High-Voltage Battery Packs

? Industrial Power Supplies

? Printer Power Boards