MDC3105LT1G Description

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 for a free?wheeling diode.

MDC3105LT1G 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

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

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

Higher Resistance Relay Coils

Pb?Free Packages are Available

MDC3105LT1G Applications

Telecom: Line Cards, Modems, Answering Machines, FAX

Machines, Feature Phone Electronic Hook Switch

Computer and Office: Photocopiers, Printers, Desktop Computers

Consumer: TVs and VCRs, Stereo Receivers, CD Players, Cassette

Recorders, TV Set-Top Boxes

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