DATA SHEET
www.onsemi.com
Ideal Diode and High Side
Switch NMOS Controller
WDFNW6
CASE 511DW
NCV68261
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.
PIN ASSIGNMENT
1
2
6
5
IN
S
GND
G
4 EN
3
D
WDFNW6
(Top View)
MARKING DIAGRAMS
Features
V6MG
• Operating Voltage Range: up to 32 V
• Immune to 60 V Load Dump Pulse
• Immune to −40 V Negative Transient
• Overvoltage Protection
G
V6 = Specific Device Code
M
G
= Month Code
= Pb−Free Package
♦ Disconnects the load from battery at V = 35.6 V typ
IN
(Note: Microdot may be in either location)
• Enable Function (3.3 V Logic Compatible Thresholds)
• Ideal Diode Function
ORDERING INFORMATION
See detailed ordering and shipping information on page 15 of
this data sheet.
♦ Protecting against Reverse Current Flow (from Output to Input)
• Reverse Polarity Protection (RPP) Function
♦ Protecting against Negative Supply
Typical Applications
• High Side Switch with Ideal Diode
• Automotive Battery Regulation
• High Side Switch with Reverse Polarity Protection
• Industrial Power Supply
• Rectifier
• NCV Prefix for Automotive and Other Applications
Requiring Unique Site and Control Change
Requirements; AEC−Q100 Grade 1 Qualified and
PPAP Capable
• High Side Switch
• Vehicle Control Module
• These Devices are Pb−Free and are RoHS Compliant
Battery
Protected Battery
Battery
Protected Battery
G
G
S
D
S
D
+
+
CIN
CIN
Cbulk
Cbulk
IN
NCV68261
NCV68261
IN
EN
EN
GND
GND
Figure 1. NCV68261 Application Schematic
(Ideal Diode)
Figure 2. NCV68261 Application Schematic
(Ideal Diode + High Side Switch)
© Semiconductor Components Industries, LLC, 2020
1
Publication Order Number:
May, 2022 − Rev. 1
NCV68261/D