1156 / LTC1156CN / LTC1156 / mosfet driver

1156 / LTC1156CN / LTC1156 / mosfet driver

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Please note: This spec sheet covers several different parts.
Quad High Side Micropower MOSFET Driver with Internal Charge Pump
No External Charge Pump Components
Fully Enhances N-Channel Power MOSFETs
Wide Power Supply Range 4.5V to 18V
Controlled Switching ON and OFF Times
Replaces P-Channel High Side Switches
Compatible with Standard Logic Families
The LTC1156 quad High side gate driver allows using low cost N-channel FETs for high side switching applications.
An internal charge pump boosts the gate drive voltage above the positive rail, fully enhancing an N-channel MOS switch with no external components. Micropower operation, with 16
mA standby current and 95mA operating current, allows use in virtually all systems with maximum efficiency.
Included on chip is independent over-current sensing to provide automatic shutdown in case of short circuits. A time delay can be added to the current sense to prevent false triggering on high in-rush current loads.
The LTC1156 operates off of a 4.5V to 18V supply and is well suited for battery-powered applications, particularly where micropower “sleep” operation is required.
Laptop Computer Power Switching
SCSI Termination Power Switching
Cellular Telephone Power Management
Battery Charging and Management
Stepper Motor and DC Motor Control
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