DESCRIPTION

The MP4581 is a high-efficiency, synchronous

step-down converter with integrated power

MOSFETs. It provides 0.8A of output current

(IOUT) in a buck topology from an input power

supply of up to 100V.

The MP4581 features constant-on-time (COT)

control, which provides fast transient response

and facilitates loop stabilization. The

configurable operation frequency can be set

between 100kHz to 1MHz via an external

resistor.

The MP4581 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 MP4581 is available in an SOIC-8EP

package.

FEATURES

 8V to 100V 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