Diodes DRDC3105 User Manual

A

f

Product Line o

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 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

A

f

)

)





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.)

A

Characteristic Symbol Limit Unit

V

V

IN(FWD

V

IN(REV

E

Product Line o

Diodes Incorporated

DRDC3105

CC

I

O

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.)

A

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.)

A

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

A

f

(

)

)

)

)

)

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

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

—

—

—

—

—

—

Product Line o

Diodes Incorporated

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

A

f

Typical Electrical Characteristics (@T

500

TJ = 85°C

400

300

200

100

, TRANSISTOR DC CURRENT GAIN

0

FE

1 10 100

H

IO, OUTPUT SINK CURRENT (mA)

Figure 2. Transistor DC Current Gain

25°C

-40°C

--------VO = 1.0V

_____VO = 0.25V

= +25°C, unless otherwise specified.)

A

5

4

3

2

1

3.5V

INPUT VOLTAGE (V)

MC54LS04
+ BAL99LT1

0

01234

Figure 3. Input V-I Requirement Compared
to Possible Source Logic Outputs

Product Line o

Diodes Incorporated

MC74HC04
@ 4.5 Vdc

MC68HC05C8
@ 5.0 Vdc

MC14049B @ 4.5 Vdc

MC68HC05C8 @ 3.3 Vdc

INPUT CURRENT (mA)

DRDC3105

DRDC3105
V

vs. I

IN

in

MC74HC04
@ 3.0 Vdc

TJ = 25°C

VO = 0.25V

45
40

35

TJ = 85°C

30

25

20

25°C

15

10

5

OUTPUT CURRENT (mA)

0

0.00 0.02 0.04 0.06 0.08 0.10
INPUT CURRENT (mA)

-40°C

Figure 4. Threshold Effects

1.2

1.0

0.8

0.6

0.4

0.2

0.0

, OUTPUT VOLTAGE (Vdc)

I

= 10mA

out

out

V

-0.2

0.1 1 10
Iin, INPUT CURRENT (mA)

50mA

125mA

____

TJ = 25°C

----TJ = -40°C

500mA

350mA

175mA

600

500

400

300

200

100

, OUTPUT CURRENT (mA)

out

I

0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Iin = 1.6mA

1.4mA

1.2mA

1.0mA

0.8mA

0.6mA

0.4mA

0.2mA

0.1mA

VO, OUTPUT VOLTAGE (Vdc)

Figure 5. Transistor Output V-I Characteristic

10

9

8

TJ = 85°C

7

, ZENER CLAMP VOLTAGE (V)
V

-40°C

6

Z

110100

IZ, ZENER CURRENT (mA)

25°C

Figure 6. Output Saturation Voltage versus
I

out/Iin

Figure 7. Zener Clamp Voltage
versus Zener Current

DRDC3105

Document number: DS35213

Rev. 4 - 2

4 of 9

www.diodes.com

March 2013

© Diodes Incorporated

A

f

10M

VCC = 5.5 Vdc

1M

100k

Vin = 0.5Vdc

10k

Vin = 0.35Vdc

1k

100

Vin = 0Vdc

10

1

OUTPUT LEAKAGE CURRENT (nA)

-40 -20 0 20 40 60 80
TJ, JUNCTION TEMPERATURE (°C)

Figure 8. Output Leakage Current
versus Temperature

100,000

10,000

1,000

100

10

0.1

0.01

OUTPUT LEAKAGE CURRENT (nA)

1

01234567

Figure 9. Output Leakage Current
versus Supply Voltage

1

Diodes Incorporated

DRDC3105

Vin = 0.5Vdc

Vin = 0.35Vdc

Vin = 0Vdc

TJ = 25°C

VCC, SUPPLY CURRENT (Vdc)

Product Line o

ºPW = 4ms
DC = 10%

ºPW = 100ms
DC = 50%

R

CE(SAT)

I

= 500mA

out(max)

ºCONTINUOUS DUTY

ºPW = 10ms
DC = 20%

0.1

OUTPUT CURRENT (A)

TA = 25°C

º = TRANSISTOR PC THERMAL LIMIT

* = MAX L/R FROM ZENER PULSED ENERGY LIMIT
(REFER TO FIGURE 11)

V

= +6.0 Vdc

CC(max)

0.01

0.1 1 10
V

out

(VOLTS)

*26 MS

*57 MS

*154 MS

*250 MS

TYPICAL
IZ vs V

Z

*21 MS

Figure 10. Safe Operating Area

DRDC3105

Document number: DS35213

Rev. 4 - 2

5 of 9

www.diodes.com

March 2013

© Diodes Incorporated

A

f

100k

10k

1k

MAX L/R TIME CONSTANT (ms)

Diodes Incorporated

TA = 25°C

E

= 50mJ

max

L/R = 2 * E

 (Vzpk * Izpk)

max

DRDC3105

Product Line o

100

10

1E-3 0.01 0.1 1

Izpk (A)

Figure 11. Zener Repetitive Pulse Energy Limit on L/R Time Constant

D = 0.5

0.2

100

0.1

0.05

10

, Transient Thermal Response

th

R

SINGLE PULSE

1

1E-4 1E-3 0.01 0.1 1 10 100 1000 10000

PULSE WIDTH (s)

Figure 12. Transient Thermal Response

DRDC3105

Document number: DS35213

Rev. 4 - 2

6 of 9

www.diodes.com

March 2013

© Diodes Incorporated

A

f

Diodes Incorporated

DRDC3105

Package Outline Dimensions

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

Package Type: SOT23

Product Line o

Package Type: SOT26

K

J

DRDC3105

Document number: DS35213

A

C

B

H

K1

K

J

D

G

Rev. 4 - 2

L

A

B C

H

D

L

F

M

M

7 of 9

www.diodes.com

Dim Min Max Typ

A 0.37 0.51 0.40
B 1.20 1.40 1.30
C 2.30 2.50 2.40
D 0.89 1.03 0.915

F 0.45 0.60 0.535
G 1.78 2.05 1.83
H 2.80 3.00 2.90

J 0.013 0.10 0.05
K 0.903 1.10 1.00

K1 - - 0.400

L 0.45 0.61 0.55
M 0.085 0.18 0.11



Dim Min Max Typ

A 0.35 0.50 0.38
B 1.50 1.70 1.60
C 2.70 3.00 2.80
D
H 2.90 3.10 3.00
J 0.013 0.10 0.05
K 1.00 1.30 1.10
L 0.35 0.55 0.40
M 0.10 0.20 0.15



All Dimensions in mm

SOT23

0° 8° -

All Dimensions in mm

SOT26

 

0° 8°

0.95



March 2013

© Diodes Incorporated

A

f

Suggested Pad Layout

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.

Package Type: SOT23

Package Type: SOT26

Y

Dimensions Value (in mm)

Z

X

C2

G

Z

Y

E

C2

C

C1

Z 2.9
X 0.8
Y 0.9

C 2.0

E 1.35

Dimensions Value (in mm)

Z 3.20
G 1.60
X 0.55

Y 0.80
C1 2.40
C2 0.95

Product Line o

Diodes Incorporated

DRDC3105

X

DRDC3105

Document number: DS35213

Rev. 4 - 2

8 of 9

www.diodes.com

March 2013

© Diodes Incorporated

A

f

IMPORTANT NOTICE

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.

Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.

This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.

LIFE SUPPORT

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

labeling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.

Copyright © 2013, Diodes Incorporated

www.diodes.com

Diodes Incorporated

DRDC3105

Product Line o

DRDC3105

Document number: DS35213

Rev. 4 - 2

9 of 9

www.diodes.com

March 2013

© Diodes Incorporated