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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