MDC3105
Integrated Relay,
Inductive Load Driver
This device is intended to replace an array of three to six discrete
components with an integrated SMT part. It is available in a SOT−23
package. It can be used to switch 3 to 6 Vdc inductive loads such as
relays, solenoids, incandescent lamps, and small DC motors without
the need of a free−wheeling diode.
http://onsemi.com
Relay, Inductive Load Driver
Silicon SMALLBLOCKt
Integrated Circuit
Features
• Provides a Robust Driver Interface between DC Relay Coil and
Sensitive Logic Circuits
• Optimized to Switch Relays from a 3.0 V to 5.0 V Rail
• Capable of Driving Relay Coils Rated up to 2.5 W at 5.0 V
MARKING
DIAGRAMS
• Features Low Input Drive Current and Good Back−to−Front Transient
Isolation
• Internal Zener Eliminates Need for Free−Wheeling Diode
• Internal Zener Clamp Routes Induced Current to Ground for Quieter
System Operation
SOT−23
CASE 318
STYLE 6
JW M G
G
1
1
• Guaranteed Off State with No Input Connection
• Supports Large Systems with Minimal Off−State Leakage
• ESD Resistant in Accordance with the Class 1C Human Body Model
• Low Sat Voltage Reduces System Current Drain by Allowing Use of
SC−74
CASE 318F
STYLE 8
Higher Resistance Relay Coils
JW M G
G
• Pb−Free Packages are Available
1
1
Applications
• Telecom: Line Cards, Modems, Answering Machines, FAX
Machines, Feature Phone Electronic Hook Switch
JW
M
G
= Specific Device Code
= Date Code*
= Pb−Free Package
• Computer and Office: Photocopiers, Printers, Desktop Computers
• Consumer: TVs and VCRs, Stereo Receivers, CD Players, Cassette
(Note: Microdot may be in either location)
Recorders, TV Set Top Boxes
*Date Code orientation and/or overbar may
vary depending upon manufacturing location.
• Industrial: Small Appliances, White Goods, Security Systems,
Automated Test Equipment, Garage Door Openers
• Automotive: 5.0 V Driven Relays, Motor Controls, Power Latches,
Lamp Drivers
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
INTERNAL CIRCUIT DIAGRAMS
V
out
(3)
V
out
(6)
V
out
(3)
V
V
V
in
1.0 k
33 k
1.0 k
33 k
1.0 k
33 k
in
in
6.6 V
6.6 V 6.6 V
(1)
(5)
(2)
GND (2)
GND (1)
GND (4)
CASE 318
CASE 318F
©
Semiconductor Components Industries, LLC, 2005
1
Publication Order Number:
December, 2005 − Rev. 5
MDC3105/D