SL1586B

28V 2A 500KHz ECOT PSM Sync Step-Down Regulator

General Description

The SL1586B is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 2A continuous output current over a wide input supply

range, with excellent load and line regulation. ECOT PSM control operation provides very fast transient response and easy loop design as well as very tight output regulation.

The SL1586B requires a minimal number of readily available, external components and is available in a space saving

SOT23-6 package.

Features

• Wide 4.5V to 28V Operating Input Range

• 2A Continuous Output Current

• 500KHz Switching Frequency

• ECOT PSM Mode Control with Fast Transient Response

• Built-in Over Current Limit

• Built-in Over Voltage Protection

• PFM Mode for High Efficiency in Light Load

• Internal Soft-Start

• 100mΩ/50mΩ Low RDS(ON) Internal Power MOSFETs

• Output Adjustable from 0.6V

• No Schottky Diode Required

• Short Protection with Hiccup-Mode

• Integrated internal compensation

• Thermal Shutdown

• Available in SOT23-6 Package

• -40°C to +85°C Temperature Range

Applications

• Automotive Systems

• Network Terminal Equipment

• Security Monitoring Camera

• Printer Systems

• Industrial Power Systems

• Distributed Power Systems

Typical Application Circuit

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