┄┄┄详细介绍┄┄┄

General Description
LN3492 is a fully integrated, high– efficiency 2A
synchronous rectified step-down converter. The LN3492
operates at high efficiency over a wide output current load
range.
This device offers two operation modes, PWM control
and PFM Mode switching control, which allows a high
efficiency over the wider range of the load.
The LN3492 requires a minimum number of readily
available standard external components and is available in
an 6-pin SOT23 ROHS compliant package.
■ Applications
 Distributed Power Systems
 Digital Set Top Boxes
 Flat Panel Television and Monitors
 Wireless and DSL Modems
 Notebook Computer
■ Features
 High Efficiency: Up to 96%
 1MHz Frequency Operation
 2A Output Current
 No Schottky Diode Required
 4.5V to 20V 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 SOT23-6L Package
 -40°C to +85°C Temperature Range
■ Package
 SOT23-6L