LTC1155IS8#PBF

LTC1155 is a dual high side gate driver allows using low cost N-channel FETs for high side switching applications. An internal charge pump boosts the gate above the positive rail, fully enhancing an N-channel MOSFET with no external components. Micropower operation, with 8µA standby current and 85µA operating current, allows use in virtually all systems with maximum efficiency. Included on-chip is overcurrent sensing to provide automatic shutdown in case of short circuits. A time delay can be added in series with the current sense to prevent false triggering on high in-rush loads such as capacitors and incandescent lamps. It is used in application such as laptop power bus switching, SCSI termination power switching, cellular phone power management, P-channel switch replacement, relay and solenoid drivers, low frequency half H-bridge, motor speed and torque control etc.

• Short-circuit protection
• Wide power supply range is 4.5V to 18V
• Controlled switching ON and OFF times
• No external charge pump components
• Replaces P-channel high side MOSFETs
• Compatible with standard logic families
• Drain sense input current is ±0.1µA maximum
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic narrow SO

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