NUD3112

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
• Pb−Free Package is Available


Application

• 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


Pinout




Specifications

Symbol	Rating	Value	Unit
VDSS	Drain to Source Voltage Continuous	14	Vdc
VG1SS	Gate to Source Voltage Continuous	6.0	Vdc
ID	Drain Current Continuous	500	mA
Ez	Single Pulse Drain−to−Source Avalanche Energy (TJinitial = 25°C) (Note 2)	50	mJ
TJ	Junction Temperature	150	°C
TA	Operating Ambient Temperature	−40 to 85	°C
Tstg	Storage Temperature Range	−65 to +150	°C
RJA	Thermal Resistance Junction−to−Ambient	556 329	°C/W
ESD	Human Body Model (HBM) According to EIA/JESD22/A114	2000	V
PD	Total Power Dissipation (Note 1) SOT−23 Derating Above 25°C	225 1.8	mW mW/°C
PD	Total Power Dissipation (Note 1) SC−74 Derating Above 25°C	380 3.0	mW mW/°C

1. Mounted onto minimum pad board.


Description

This NUD3112 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. NUD3112 accepts logic level inputs thus allowing it to be driven by a large variety of devices including logic gates, inverters, and microcontrollers.