Low Quiescent Current High Efficiency Step-Down Converters
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U U
LTC1472 Protected PCMCIA VCC and
VPP Switching Matrix
FEATURES
■ Both VCC and VPP Switching in a Single Package ■ Built-In Current Limit and Thermal Shutdown ■ 16-Pin (Narrow) SOIC Package ■ Inrush Current Limited (Drives 150µF Loads) ■ Continuous 12V Power Not Required ■ Extremely Low RDS(ON) NMOS Switches ■ Guaranteed 1A VCC Current and 120mA VPP Current ■ 1µA Quiescent Current in Standby ■ No External Components Required ■ Compatible with Industry Standard Controllers ■ Break-Before-Make Switching ■ Controlled Rise and Fall Times
U APPLICATIO S
■ OpenCable Set Top Box ■ Notebook Computers ■ Palmtop Computers ■ Pen-Based Computers ■ Bar-Code Readers
DESCRIPTIO
The LTC®1472 switching matrix routes power to both the VCC and VPP power supply pins of the PCMCIA compatible card socket.