NCP345 - Overvoltage Protection

General Description

Pin # Symbol Pin Description 1 OUT This signal drives the gate of a P

channel MOSFET.

of the CNTRL input.

Key Features

Overvoltage Turn.
Off Time of less than 1.0 msec.
Accurate Voltage Threshold of 6.85 V (nominal).
Undervoltage Lockout Protection.
CNTRL Input Compatible with 1.8 V Logic Levels.
Pb.
Free Package is Available Typical.

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NCP345 overvoltage protection by ON - Datasheet Preview

Datasheet Details

Part number	NCP345
Manufacturer	ON
File Size	66.16 KB
Description	Overvoltage Protection
Datasheet	NCP345 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCP345 Overvoltage Protection IC The NCP345 overvoltage protection circuit (OVP) protects sensitive electronic circuitry from overvoltage transients and power supply faults when used in conjunction with an external P−channel FET. The device is designed to sense an overvoltage condition and quickly disconnect the input voltage supply from the load before any damage can occur. The OVP consists of a precise voltage reference, a comparator with hysteresis, control logic, and a MOSFET gate driver. The OVP is designed on a robust BiCMOS process and is intended to withstand voltage transients up to 30 V. The device is optimized for applications that have an external AC/DC adapter or car accessory charger to power the product and/or recharge the internal batteries.