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.