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MT2499A 3.5A,4.5V-21V Input,340KHz Synchronous Step-Down Converter

The MT2499A is a fully integrated,high–
efficiency 3.5A synchronous rectified
step-down converter.The MT2499A 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 MT2499A requires a minimum number of
readily available standard external components
and is available in an ESOP8 ROHS compliant
package.

FEATURES
 High Efficiency: Up to 94%
 340KHz Frequency Operation
 3.5A Output Current
 No Schottky Diode Required
 4.5V to 21V Input Voltage Range
 0.925V 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 ESOP8 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