DRDC3105

1 of 9

www.diodes.com

December 2011

© Diodes Incorporated

A Product Line of

Diodes Incorporated

DRDC3105

INTEGRATED RELAY, INDUCTIVE LOAD DRIVER

Description and Applications

The DRDC3105 is an integrated solid-state DC relay driver that can

switch inductive loads. It provides a robust driver interface by acting as

a buffer stage between sensitive logic circuits and that of 3 to 6V DC

inductive relay coils. With a low input drive current requirement, the

DRDC3105 only has slight loading on the input circuitry and it will

provide good transient isolation between output and input channels.

The output switch is guaranteed by design to go open-circuit and fall

into the off-state condition when input drive is lost or disconnected.

In the industry standard SOT23 and SOT26, the DRDC3105 comes as

a single or dual die which can replace three to six individual discrete

components within a single integrated package, including a Zener

across the output. The Zener will clamp at 6.6V to sink inductive

currents to ground which will reduce EMI noise in the system. By

integrating the Zener, the DRDC3105 eliminates the need for an

external free-wheeling diode and allows the driving of inductive loads

such as relays, solenoids, incandescent lamps, and small DC motors in:

•

Automotive: 5.0 V Driven Relays, Lamp Drivers, Motor Controls

•

Telecom equipment: Modems, DSL, Cable (EMTA), Line Cards,

IP-PBX, Analog Terminal Adaptors, End User Telecom Equipment

•

Desktop Computers, Printers, Photocopiers

•

LCD & Plasma TVs, Set Top Boxes

•

Consumer Appliances, White Goods, Automated Door Control

•

Industrial equipment inc. Process Control, ATE equipment

•

Solar inverters

Features and Benefits

•

Inductive load driver capable of driving 3 to 6V DC coils

•

Optimized to switch inductive loads from supply of 3 to 5V with

the capability to drive coils up to 2.5W from a 5V rail

•

Fully integrated into a single SOT23 or dual SOT26 package to

minimize footprint area and reduce number of components

•

Includes Zener across output to reduce EMI noise

•

Internal low saturation BJT to reduce power dissipation in driving

high currents into the coil

•

Output guaranteed to be in off-state condition during no input

•

Near – Zero quiescent supply current in off-state condition with

minimal leakage

•

Rugged design and inherently robust by using solid-state BJT

technology integrated into a single die

•

ESD Protected up to 1kV on Human Body Model (HBM)

•

“Lead-Free”, RoHS Compliant (Note 1)

•

Halogen and Antimony Free "Green" Device (Note 2)

•

Qualified to AEC-Q101 Standards for High Reliability

Mechanical Data

•

Case: SOT23 & SOT26

•

Case material: “Green” plastic molding compound (Note 2)

•

UL Flammability Rating 94V-0

•

Moisture Sensitivity: Level 1 per J-STD-020

•

Terminals: Matte Tin Finish

•

Weight: SOT23 = 0.008 grams (Approximate)

SOT26 = 0.018 grams (Approximate)

Product

Package

Marking

Reel size (inches)

Tape width (mm)

Quantity per reel

DRDC3105F-7

SOT23

1R6

7

8

3,000

DRDC3105E6-7

SOT26

3105

7

8

3,000

Notes:

1. No purposefully added lead.

2. Diodes Inc's "Green" policy can be found on our website at http://www.diodes.com

3. For packaging details, go to our website at http://www.diodes.com

Marking Information

1R6 = SOT23, Product type Marking Code

3105 = SOT26, Product type Marking Code

ESD PROTECTED

HBM TO 1kV

SOT26

Top View

SOT23

Top View

Top View

Pin-Out

OUT

IN

GND

SOT23

Top View

Pin-Out

GND1

IN2

GND2

OUT2

OUT1

IN1

SOT26

3105

1R6