Diodes DRDC3105 User Manual

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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 3V 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

ESD PROTECTED

HBM TO 1kV

SOT23

Top View

SOT26

Top View

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)
 Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)
 Halogen and Antimony Free. "Green" Device (Note 3)
 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: Finish – Matte Tin Plated Leads, Solderable per
 MIL-STD-202, Method 208
 Weight: SOT23 = 0.008 grams (Approximate)

SOT26 = 0.018 grams (Approximate)

SOT26

OUT1

IN1

GND2

Top View

Pin-Out

OUT

SOT23

Top View

Pin-Out

GND

IN

GND1

IN2

OUT2

Ordering Information (Note 4)

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 purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free, "Green"
and Lead-Free.

3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.

4. For packaging details, go to our website at http://www.diodes.com/products/packages.html.

Marking Information

1R6

1R6 = SOT23, Product Type Marking Code
3105 = SOT26, Product Type Marking Code

DRDC3105

Document number: DS35213

Rev. 4 - 2

1 of 9

www.diodes.com

March 2013

© Diodes Incorporated

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Internal Device Schematic

Maximum Ratings (@T

Supply Voltage
Input Voltage (Forward)
Input Voltage (Reverse)
Output Sink Continuous Current
Repetitive Pulse Zener Energy Limit (Duty Cycle 0.01%)

= +25°C, unless otherwise specified.)

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Characteristic Symbol Limit Unit

V

V

IN(FWD

V

IN(REV

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DRDC3105

CC

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zpk

6.0 V

6.0 V

-0.5 V
500 mA

50 mJ

Thermal Characteristics for DRDC3105F (SOT23) (@T

= +25°C, unless otherwise specified.)

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Characteristic Symbol Value Unit

Power Dissipation

Thermal Resistance, Junction to Ambient

(Note 5)
(Note 6) 350
(Note 5)

(Note 6) 357
Thermal Resistance, Junction to Leads (Note 11)
Operating and Storage Temperature Range

P

R

R

T

J,TSTG

θJA

θJL

D

310

403

mW

°C/W

350 °C/W

-55 to +150 °C

Thermal Characteristics for DRDC3105E6 (SOT26) (@T

= +25°C, unless otherwise specified.)

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Characteristic Symbol Value Unit

0.9

7.2

1.1

8.8

1.7

13.6
139

W

mW/°C

°C/W

Power Dissipation
Linear Derating Factor

Thermal Resistance, Junction to Ambient

(Note 7 & 9)

P

(Note 7 & 10)

D

(Note 8 & 10)

(Note 7 & 9)
(Note 7 & 10) 113

R

θJA

(Note 8 & 10) 73
Thermal Resistance, Junction to Leads (Note 11)
Operating and Storage Temperature Range

Notes: 5. For a device mounted on minimum recommended pad layout 1oz weight copper that is on a single-sided FR4 PCB; device is measured under still air

conditions whilst operating in a steady-state.

6. Same as Note 5, except the device is mounted on 15mm X 15mm 1oz copper.

7. Same as Note 5, except the device is mounted on 25mm X 25mm 1oz copper.

8. Same as Note 7, except the device is measured at < 5sec

9. For a device with one active die.

10. For a device with two die running at equal power.

11. Thermal resistance from junction to solder-point (at the end of the “OUT” lead).

R

θJL

T

, T

J

STG

100 °C/W

-55 to +150 °C



DRDC3105

Document number: DS35213

Rev. 4 - 2

2 of 9

www.diodes.com

March 2013

© Diodes Incorporated

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Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

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Characteristic Symbol Min Typ Max Unit Test Condition

OFF CHARACTERISTICS

Output Zener Breakdown Voltage

BV

BV

Output Leakage Current @ 0 Input Voltage

“ON” state input voltage (Note 13)
“OFF” State Input Voltage (Note 14)

V

V
ON CHARACTERISTICS
Input Bias Current (HFE Limited) Iin
Output Saturation Voltage
Output Sink Current – Continuous

V

I
SWITCHING CHARACTERISTICS (Refer to Figure 1)
Propagation Delay Times:
High to Low Propagation Delay; (5.0V 74HC04)
Low to High Propagation Delay; (5.0V 74HC04)

High to Low Propagation Delay; 13 (3.0V 74HC04)
Low to High Propagation Delay; 13 (3.0V 74HC04)

High to Low Propagation Delay; 14 (5.0V 74LS04)
Low to High Propagation Delay; 14 (5.0V 74LS04)

Transition Times:
Fall Time; (5.0V 74HC04)

Rise Time; (5.0V 74HC04)

Fall Time; 13 (3.0V 74HC04)
Rise Time; 13 (3.0V 74HC04)

Fall Time; 14 (5.0V 74LS04)
Rise Time; 14 (5.0V 74LS04)

Notes: 13. The device is guaranteed to be in “ON” state with V

14. The device is guaranteed to be in “OFF” state with V

(out)

−out

I

OO

in(on

in(off

O(sat

O(on

t

PHL

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

f

tr
t

f

tr
t

f

tr

IN(ON)

IN(OFF)

6.2

—

—

—

400 540

—
—

250 430

—

—

—

—

—

—

above 1.5V

below 400mV

-

6.6

0.67

—
—

7.0

0.1
30

0.99 1.5 V

—

0.7 1.6 mA

125 160 mV

—

20.4

1.43

32.2
760

25.3

2.57

12.5
411

21.1
220

15.1
849

—

—

—

—

—

—

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V

µA

mV

mA

ns

µs

ns
ns

ns

µs

ns
ns

ns
ns

ns
ns

@ I

V

O

V

O

I

=100 mA, VO = 150mV

O

I

=100 µA, VO= 4.9V

O

I

O

I

O

V

CE

-

DRDC3105

= 10 mA Pulse

T

= 5.5 V, TA = +25°C

= 5.5 V, TA = +85°C

= 250 mA, VO = 0.25V
= 250 mA, I

= 0.25 V, Iin = 1.5 mA

= 1.5 mA

in

—

—

—

—

—

—

DRDC3105

Document number: DS35213

Rev. 4 - 2

3 of 9

www.diodes.com

March 2013

© Diodes Incorporated