ZCC5145-45V 0.6A DC/DC降壓IC 替代MP2451/RT8258

至誠微電子-琳桐

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.
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 in a SOT23-6 Package
​APPLICATIONS
 Power Meters
 Distributed Power Systems
 Battery Chargers
 Pre-Regulator for Linear Regulators