DESCRIPTION
Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn-on. In shutdown mode, the supply current drops below 1 μA. This device, available in an 8-pin ESOP package, provides a very compact system solution with minimal reliance on external components. FEATURES
z z z z z z z z z z z 3A Output Current Wide 4.75V to 30V Operating Input Range Integrated 100mΩ Power MOSFET Switches Output Adjustable from 0.925V to 20V Up to 95% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Fixed 300KHz Frequency Cycle-by-Cycle Over Current Protection Input Under Voltage Lockout Thermally Enhanced 8-Pin SOIC Package APPLICATIONS
z z z z z Distributed Power Systems Networking Systems Set-top Box LCD TV/Monitor Notebook or Mini-Book PACKAGE REFERENCE Part number WS5203 Package SOP8 Temperature –20° C to +85° C ABSOLUTE MAXIMUM RATINGS
(1) Supply Voltage (VIN).......................-0.3V to 30V Switch Voltage (VSW) ...................–1V to VIN + 0.3V Bootstrap Voltage (VBS) .. .Vsw-0.3V to VSW + 6V Enable/UVLO Voltage (VEN) .
