1 DESCRIPTION

The ZCC5145 is a monolithic, step-down,

switch- mode converter with a built-in power

MOSFET. It achieves a 0.6A peak-output

current over a wide input supply range with

excellent load and line regulation. Current-mode

operation provides a fast transient response and

eases

loop

stabilization.

Fault

condition

protections include cycle-by-cycle current limiting

and thermal shutdown.

The ZCC5145 requires a minimal number of

readily-available external components. The

ZCC5145 is available in a TSOT23-6 package.

2 FEATURES

 0.6A Peak Output Current

 0.6Ω Internal Power MOSFET

 Capable to Start Up with Big Output

Capacitor

 Stable with Low-ESR Ceramic Output

Capacitors

 Up to 94% Efficiency

 Fixed 1.2MHz Frequency

 Cycle-by-Cycle Over-Current Protection

 Wide 4.2V-to-45V Operating Input Range

 Output Adjustable from 4.5V to 0.94xVIN

 Available