DESCRIPTION

The EUP3484 is a synchronous current mode buck

regulator capable of driving 3A continuous load current

with excellent line and load regulation. The EUP3484

can operate with an input range 4.5V to 30V and the

output can be externally set from 0.925V to 20V with a

resistor divider.

Fault condition protection includes cycle-by-cycle

current limiting and thermal shutdown. In shutdown

mode the regulator draws 1μA of supply current.

Programmable soft-start minimizes the inrush supply

current and the output overshoot at initial startup.

The EUP3484 require a minimum number of external

components.

FEATURES

3A Output Current

220ns Minimum On Time

35V Input Surge Protection

Integrated 160m?/110m? DMOS Switches

4.5V to 30V Input Operating Range

Output Adjustable from 0.925V to 20V

Up to 95% Efficiency

1μA Shutdown Current

Fixed 340KHz Frequency

Programmable Soft-Start

Thermal Shutdown and Overcurrent Protection

Input Supply Overvoltage and Undervoltage

Lockout

Available in SOP-8 (EP) Package

RoHS Compliant and 100% Lead(Pb)-Free

Halogen-Free

APPLICATIONS

Distributed Power Systems

Networking Systems

PC Monitors

Portable Electronics