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The NCV68261 is a Reverse Polarity Protection and Ideal Diode

NMOS Controller with optional High Side Switch function, intended

as a lower loss and lower forward voltage replacement for power

rectifier diodes and mechanical power switches. The controller

operates in conjunction with one or two N−channel MOSFETs and

sets the ON/OFF state of the transistors based on the state of the

Enable pin and the Input−to−Drain differential voltage polarity.

Depending on the Drain pin connection, both Ideal Diode and High

Side Switch applications can operate in two different modes. With the

Drain pin connected to the load, the applications are in Ideal Diode

mode, whereas with the Drain pin connected to ground, the

applications are merely in Reverse Polarity Protection mode.

Features

• Operating Voltage Range: up to 32 V

• Immune to 60 V Load Dump Pulse

• Immune to −40 V Negative Transient

• Overvoltage Protection

♦ Disconnects the load from battery at VIN = 35.6 V typ

• Enable Function (3.3 V Logic Compatible Thresholds)

• Ideal Diode Function

♦ Protecting against Reverse Current Flow (from Output to Input)

• Reverse Polarity Protection (RPP) Function

♦ Protecting against Negative Supply

• High Side Switch with Ideal Diode

• High Side Switch with Reverse Polarity Protection

• NCV Prefix for Automotive and Other Applications

Requiring Unique Site and Control Change

Requirements; AEC−Q100 Grade 1 Qualified and PPAP Capable

• These Devices are Pb−Free and are RoHS Compliant

Typical Applications

• Automotive Battery Regulation

• Industrial Power Supply

• Rectifier

• High Side Switch

• Vehicle Control Module