®
50V - 1.5A QUA D DARLINGT ON SWIT CHES
.
OUTPUT CURRENT TO 1.5 A EACH DARLINGTON
.
MINIMUM BREAKDOWN 50 V
.
SUSTAINING VOLTAGE AT LEAST 35 V
.
INTEGRAL SUPPRESSION DIODES
(ULN2064B, ULN2066B, ULN2068B and
ULN2070B)
.
ISOLATED DARLINGTON PINOUT
(ULN2074B , UL N2076B)
.
VERSIONS COMPATIBLE WITH ALL POPULAR LOGIC FAMILIES
DESCRIPTION
Designed to interface l ogic to a wi de v ari et y of high
current, high v oltage loads, these devic es each contain four NPN darlington switches delivering up to
1.5 A with a s pec ified minimum breakdown of 50 V
and a sustaining voltage of 35 V measured at 100
mA. The ULN2064B, ULN2066B, ULN2068B and
ULN2070B contain integral suppression diodes for
inductive loads have common emitters. The
ULN2074B and ULN2076B feature isolated darlington pinouts and are intended for applications
such as emitter follow er configur ations. Inpu ts of the
ULN2064B, ULN2068B and ULN2074B are compatible with popular 5 V logic families and the
ULN2066B and ULN2076B are compatible with 615 V CMOS and PMOS. Types ULN2068B and
ULN207 0B include a predriver s tage to reduce loading on the c ontr ol logic.
ULN2064B - ULN2066B
ULN2068B - ULN2070B
ULN2074B - ULN2076B
POWERDIP
12 + 2 + 2
PIN CONNECTIONS AND ORDER CODES
ULN2064B
ULN2066B
Septembe r 200 3
ULN2068B
ULN2070B
ULN2074B
ULN2076B
1/8
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
SCHEMATIC DIAGRAM
ULN2064B : RIN = 350
ULN2066B : R
IN
= 3k
Ω
Ω
ULN2068B : RIN = 2.5kΩ, Rs = 900
ULN2070B : R
= 11.6kΩ, Rs = 3.4k
IN
Ω
Ω
ULN2074B : RIN = 350
ULN2076B : R
IN
= 3k
Ω
ABSOLUTE MAXIMUM RATIN GS
Symbol Parameter Value Unit
V
V
CE(sus )
P
T
T
CEX
I
O
V
I
V
tot
amb
stg
Output Voltage 50 V
Output Sustaining Voltage 35 V
Output Current 1.75 A
Input Voltage for ULN2066B – 2070B - 2074B - 2076B
i
Input Current 25 mA
I
Supply Voltage for ULN2068B
s
Power Dissipation at T
for ULN2064B – 2068B
for ULN2070B
= 90 °C
pins
at T
= 70 °C
amb
30
15
10
20
4.3
1
Operating Ambient Temperature Range – 20 to 85
Storage Temperature – 55 to 150
Ω
V
V
V
V
W
W
C
°
C
°
= 25oC unless otherwise specified )
ELECTRICAL CHARACTERISTICS
(T
amb
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
I
V
CE(sus )
V
CE(sat)
I
CEX
i(on)
Output Leakage Current VCE = 50V
T
T
amb
amb
= 25°C
= 70°C
100
500
A
µ
A
µ
Collector-emitter Sustaining Voltage IC = 100mA, Vi = 0.4V 35 V 2
Collector-emitter Saturation Voltage IC = 500mA IB = 625µA
IC = 750mA IB = 935µA
IC = 1A IB = 1.25mA
IC = 1.25A IB = 2mA
1.1
1.2
1.3
1.4
V
V
V
V
Input Current for ULN2064B and ULN2074B
= 2.4V
V
i
Vi = 3.75V
1.4
3.3
4.3
9.6
mA
mA
for ULN2066B and ULN2076B
= 5V
V
i
Vi = 12V
0.6
1.7
1.8
5.2
mA
mA
for ULN2068B
= 2.75V
V
i
Vi = 3.75V
0.55
1.0
mA
mA
for ULN2070B
Vi = 5V
= 12V
V
i
0.4
1.25
mA
mA
2/8
1
3
3
3
3
4
4
4
4
4
4
4
4
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
= 25oC unless otherwise specified ) ( continued)
ELECTRICAL CHARACTERISTICS
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
V
t
t
Notes :
Input Voltage VCE = 2V, IC = 1A
i(on)
Supply Current for ULN2068B
I
s
Turn-on Delay Time 0.5 Vi to 0.5 V
PLH
Turn-off Delay Time 0.5 Vi to 0.5 V
PHL
Clamp Diode Leakage Current for ULN2064B-ULN2066B
I
R
V
Clamp Diode Forward Voltage for ULN2064B-ULN2066B
F
1. Input voltage is with reference to the substrate (no connection to any other pins) for the ULN2074B and ULN2076B
reference is ground for all other types.
2. Input current may be limited by maximum allowable input voltage.
(T
amb
ULN2064B, ULN2074B
ULN2066B, ULN2076B
= 2V, IC = 1.5A
V
CE
ULN2064B, ULN2074B
ULN2066B, ULN2076B
ULN2068B
ULN2070B
= 500mA, Vi = 2.75V
I
C
for ULN2070B
IC = 500mA, Vi = 5V
and ULN2068B-ULN2070B
= 50 V
V
R
T
= 25°C
amb
T
= 70°C
amb
and ULN2068B-ULN2070B
= 1 A
I
F
IF = 1.5 A
2
6.5
2.5
10
2.75
V
V
V
V
V
5
V
6
4.5mAmA88
o
o
1
1.5
50
100
s
µ
s
µ
A
µ
A
µ
1.752V
V
5
5
5
5
5
5
6
7
TEST CIRCUITS
Figure 1. Figure 2.
Figure 3. Figure 4.
3/8
ULN2064B-ULN2066B-ULN2068B-ULN2070B- ULN2074B-ULN2076B
Figure 5. Figure 6.
Figure 7. Figure 8.
Figure 9 :
Input Curren t as a Function of
Input Volt age.
Figure 11 :
Collector Cur r ent as a Func t io n of
Input Current.
Figure 10 :
Input Curren t as a Function of
Input Voltage.
4/8
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
MOUNTING INSTRUCTIONS
The R
pins to a suitable copper area of the printed circuit
board (Fig. 12 ) or to an ex t er nal heat s in k (F ig. 13).
The diagra m of Figure 14 s hows the ma ximum dissipable power P
the side "α " of two equal squ ar e c opp er ar eas ha ving a thickness of 35 µ (1.4 mils).
can be reduc ed b y s old er ing the GND
th j-amb
and the R
tot
as a function of
th j-amb
During solder ing the pins tem peratur e must not ex ceed 260 °C and the soldering time must not be
longer than 12 se co nds .
The exter nal heatsink or pr int ed c ir cu it c op per area
must be conne cted to electrical gr ound.
Figure 12 :
Example of P.C. Boar d Are a which is
Used as Heatsink.
Figure 14 :
Maximum Dissipable P owe r an d J unc tion to Ambie nt Ther m al Resistance
vs. Side "α".
Figure 13 :
Figure 15 :
External He at si nk Mo unting Example.
Maximum Al lowable Power D is si pa-
tion vs. Ambient Temperature.
5/8
ULN2064B- UL N2066B-ULN2068B- ULN2070B-ULN2074B-ULN2076B
TYPICAL APPLICATIONS
Figure 16 :
Common- anod e LE D Drivers.
Figure 17 :
Common-cat hod e LE D Drivers.
6/8
ULN2064B-U LN 2066B-ULN2068B-UL N 2070B-ULN2074B-UL N2076B
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
a1 0.51 0.020
B 0.85 1.40 0.033 0.055
b 0.50 0.020
b1 0.38 0.50 0.015 0.020
D 20.0 0.787
E 8.80 0.346
e 2.54 0.100
e3 17.78 0.700
F 7.10 0.280
I 5.10 0.201
L 3.30 0.130
Z 1.27 0.050
mm inch
OUTLINE AND
MECHANICAL DATA
Powerdip 16
7/8
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any inf ringement of patents or other rights of third parties which may result from its use. No
license is g ranted by implication or otherwise under any patent or pa tent rights of ST Microelectronics. Specific ations mentioned i n this
publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written
approval of STMicroelec troni cs.
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