© Semiconductor Components Industries, LLC, 2002
October, 2016 − Rev. 11
1 Publication Order Number:
NUD3112/D
NUD3112
Integrated Relay,
Inductive Load Driver
This device is used to switch inductive loads such as relays,
solenoids incandescent lamps, and small DC motors without the need
of a free−wheeling diode. The device integrates all necessary items
such as the MOSFET switch, ESD protection, and Zener clamps. It
accepts logic level inputs thus allowing it to be driven by a large
variety of devices including logic gates, inverters, and
microcontrollers.
Features
• Provides a Robust Driver Interface Between D.C. Relay Coil and
Sensitive Logic Circuits
• Optimized to Switch Relays of 12 V Rail
• Capable of Driving Relay Coils Rated up to 6.0 W at 12 V
• Internal Zener Eliminates the Need of Free−Wheeling Diode
• Internal Zener Clamp Routes Induced Current to Ground for Quieter
Systems Operation
• Low V
DS(ON)
Reduces System Current Drain
• SZ Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC−Q101 Qualified and
PPAP Capable
• These are Pb−Free Devices
Typical Applications
• Telecom: Line Cards, Modems, Answering Machines, FAX
• Computers and Office: Photocopiers, Printers, Desktop Computers
• Consumer: TVs and VCRs, Stereo Receivers, CD Players, Cassette
Recorders
• Industrial: Small Appliances, Security Systems, Automated Test
Equipment, Garage Door Openers
INTERNAL CIRCUIT DIAGRAMS
Drain (3)
1.0 k
300 k
Gate (1)
Source (2)
Drain (6)
1.0 k
300 k
Gate (2)
Source (1)
Drain (3)
1.0 k
300 k
Gate (5)
Source (4)
CASE 318FCASE 318
www.onsemi.com
MARKING DIAGRAMS
SOT−23
CASE 318
STYLE 21
JW5 MG
G
JW5 = Specific Device Code
M = Date Code
G = Pb−Free Package
(Note: Microdot may be in either location)
SC−74
CASE 318F
STYLE 7
JW5 = Specific Device Code
M = Date Code
G = Pb−Free Package
(Note: Microdot may be in either location)
JW5 MG
G
1
2
3
1
6
Device Package Shipping
†
ORDERING INFORMATION
NUD3112LT1G SOT−23
(Pb−Free)
3000 / Tape &
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
SZNUD3112LT1G
SC−74
(Pb−Free)
3000 / Tape &
Reel
NUD3112DMT1G
SOT−23
(Pb−Free)
3000 / Tape &
Reel
SZNUD3112DMT1G SC−74
(Pb−Free)
3000 / Tape &
Reel