40V/3A 500KHz Synchronous Step-Down Converter
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Features
?Wide 4.5V to 40V Operating Input Range
?3.0A Continuous Output Current
?500KHz Switching Frequency
?Short Protection with Hiccup-Mode
?Built-in Over Current Limit
?Programmable Output Over-Voltage Protection
?DCM Mode for High Efficiency in Light Load
?Integrated internal Soft-Start
?120/80mΩ Low RDS(ON)Internal MOSFETs
?Output Adjustable from 0.925V
?Low EMI Signature
?99% Duty cycle
?Integrated internal compensation
?Thermal Shutdown
?Available in ESOP8 Package
?Constant on time Mode
General Description
The is alow EMI signature, asynchronous,
step-down, switch-mode converter with internal power
MOSFETs.
It offers a very compact solution to provide a 3A continuous current over a wide input supply range, with excellent load
ａnd line regulation.achieves low EMI signature with well controlled switching edges. Fault condition
protection includes programmable-output over-voltage protection,Constant on time Mode, and thermal shutdown.3903
requires a minimal number of readily available standard external components. It is available in ESOP8
package.
Typical Application Circuit
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