Motorola ULN2068B Datasheet

Device

Operating

Temperature Range

Package



SEMICONDUCTOR

TECHNICAL DATA

QUAD 1.5 A

DARLINGTON SWITCH

ORDERING INFORMATION*

ULN2068B TA = 0 to +70°C Plastic DIP

B SUFFIX

PLASTIC PACKAGE

CASE 648C

PIN CONNECTIONS

Order this document by ULN2068/D

K

C

B

Gnd

Gnd

V

S

B

C

C

NC

B

Gnd

Gnd

B

C

K 1

2
3

4

5

6
7
8

16

15
14

13

12

11

10

9

*Other options of this ULN2060/2070 series are available

*for volume applications. Contact your local Motorola Sales
*Representative.

1

MOTOROLA ANALOG IC DEVICE DATA

    
 

The ULN2068B is a high–voltage, high–current quad Darlington switch

array designed for high current loads, both resistive and reactive, up to 300 W .

It is intended for interfacing between low level (TTL, DTL, LS and 5.0 V
CMOS) logic families and peripheral loads such as relays, solenoids, dc and
stepping motors, multiplexer LED and incandescent displays, heaters, or other
high voltage, high current loads.

The Motorola ULN2068B is specified with minimum guaranteed breakdown
of 50 V and is 100% tested for safe area using an inductive load. It includes
integral transient suppression diodes. Use of a predriver stage reduces input
current while still allowing the device to switch 1.5 Amps.

It is supplied in an improved 16–Pin plastic DIP package with heat sink
contact tabs (Pins 4, 5, 12 a nd 13). A c opper a lloy lead frame allows maximum
power dissipation using standard cooling techniques. The use of the contact
tab lead frame facilitates attachment of a DIP heat sink while permitting the
use of standard layout and mounting practices.

• TTL, DTL, LS, CMOS Compatible Inputs

• 1.5 A Maximum Output Current

• Low Input Current

• Internal Freewheeling Clamp Diodes

• 100% Inductive Load Tested

• Heat Tab Copper Alloy Lead Frame for Increased Dissipation

MAXIMUM RATINGS (T

A

= 25°C and ratings apply to any one device in the

package, unless otherwise noted)

Rating

Symbol Value Unit

Output Voltage V

O

50 V

Input Voltage (Note 1) V

I

15 V

Supply Voltage V

S

10 V

Collector Current (Note 2) I

C

1.75 A

Input Current (Note 3) I

I

25 mA

Operating Ambient Temperature Range T

A

0 to +70 °C

Storage Temperature Range T

stg

–55 to +150 °C

Junction Temperature T

J

150 °C

NOTES: 1.Input voltage referenced to ground.

2.Allowable output conditions shown in Figures 11 and 12.

3.May be limited by max input voltage.

Partial Schematic

C

3.0 k

7.2 k

R

S

0.9 k

B

R

in

2.5 k

V

S

K

 Motorola, Inc. 1995

ULN2068

2

MOTOROLA ANALOG IC DEVICE DATA

ELECTRICAL CHARACTERISTICS

(TA = 25°C unless otherwise noted.)

Characteristic

Symbol Min Typ Max Unit

Output Leakage Current (Figure 1)

(VCE = 50 V)
(VCE = 50 V, TA = 70°C)

I

CEX

–
–

–
–

100
500

µA

Collector–Emitter Saturation Voltage (Figure 2)

(IC = 500 mA
(IC = 750 mA
(IC = 1.0 A
(IC = 1.25 A

Vin = 2.4 V)

V

CE(sat)

–
–
–
–

–
–
–
–

1.13

1.25

1.40

1.60

V

Input Current – On Condition (Figure 4)

(VI = 2.4 V)
(VI = 3.75 V)

I

I(on)

–
–

–
–

0.25

1.0

mA

Input Voltage – On Condition (Figure 5)

(VCE = 2.0 V, IC = 1.5 A)

V

I(on)

– – 2.4

V

Inductive Load Test (Figure 3)

(VS = 5.5 V, VCC = 24.5 V,
tPW =

4.0 ms)

∆V

out

– – 100

mV

Supply Current (Figure 8)

(IC = 500 mA, Vin = 2.4 V, VS = 5.5 V)

I

S

– – 6.0

mA

Turn–On Delay Time

(50% EI to 50% EO)

t

PHL

– – 1.0

µs

Turn–Off Delay Time

(50% EI to 50% EO)

t

PLH

– – 4.0

µs

Clamp Diode Leakage Current (Figure 6)

(VR = 50 V)
(VR = 50 V, TA = 70°C)

I

R

–
–

–
–

50

100

µA

Clamp Diode Forward Voltage (Figure 7)

(IF = 1.0 A)
(IF = 1.5 A)

V

F

–
–

–
–

1.75

2.0

V

TEST FIGURES

9

70 MH

20

Ω

V

CC

V

S

t

PW

I

C

I

in

∆V

out

= V

out1

– V

out2



V

CE

Open

µ

A

Open

I

CEX

0

DUT

14 ms

5.0

V

V

in

Open

V

CE

DUT

V

in

DUT

DUT

mA

Open

V

in

Open

V

out

1

V

out

2

Figure 1. Figure 2.

Figure 3. Figure 4.