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