森利威爾 SL1585B 

36V/3A 500KHz Synchronous Step-Down Converter

General Description

The SL1585B is a low EMI signature, asynchronous, step-down, switch-mode converter with internal power MOSFETs.

It offers a very compact solution to provide a 3A continuous current over a wide input supply range, with excellent load

and line regulation. SL1585B achieves low EMI signature with well controlled switching edges. Fault condition

protection includes programmable-output over-voltage protection, Constant on time Mode, and thermal shutdown.

SL1585B requires a minimal number of readily available standard external components. It is available in ESOP8

package.

Features

? Wide 4.5V to 36V Operating Input Range

? 3.0A Continuous Output Current

? 500KHz Switching Frequency

? Short Protection with Hiccup-Mode

? Built-in Over Current Limit

? Programmable Output Over-Voltage Protection

? DCM Mode for High Efficiency in Light Load

? Integrated internal Soft-Start

? 120/80mΩ Low RDS(ON) Internal MOSFETs

? Output Adjustable from 0.925V

? Low EMI Signature

? 100% Duty cycle

? Integrated internal compensation

? Thermal Shutdown

? Available in ESOP8 Package

? Constant on time Mode

Applications

? Automotive Entertainment

? Wireless and DSL Modems

? Computer Entertainment

? Power Supply for Car Chargers

Typical Application Circuit

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