600KHz, 18V，2A Synchronous Step-Down Converter FEATURES

High Efficiency: Up to 98%

  600KHz Frequency Operation

  2A Output Current

  No Schottky Diode Required

  4.0V to 18V Input Voltage Range

  0.6V Reference

Slope Compensated Current Mode Control for Excellent Line and Load Transient Response

Integrated internal compensation

Stable with Low ESR Ceramic Output Capacitors Over Current Protection with Hiccup-Mode

  Thermal Shutdown

  Inrush Current Limit and Soft Start

  Available in SOT23-6 Package -40°C to +85°C Temperature Range

APPLICATIONS

Distributed Power Systems

  Digital Set Top Boxes

  Flat Panel Television and Monitors

  Wireless and DSL Modems

  Notebook Computer

GENERAL DESCRIPTION

The AP9166 is a fully integrated,, PWM control and PFM Mode switching control,9166 requires a minimum number of readily available standard external components and is available in a 6-pin SOT23-6 compliant package.

 

 

Internal Regulator

The AP9166 is a current mode step down DC/, low resistance, high voltage power MOSFET, and operates at a high 600K operating frequency to ensure a compact, high efficiency design with excellent AC and DC performance.

Error Amplifier

The error amplifier compares the FB pin voltage with the internal FB reference (VFB),.

Internal Soft-Start

, the internal circuitry generates a soft-start voltage (SS)(REF),,1.5 ms.