ULN2064B, ULN2066B
ULN2068B, ULN2074B
50 V - 1.5 A quad Darlington switches
Features
■
Output current to 1.5 A for each Darlington
■
Minimum breakdown 50 V
■
Sustaining voltage at least 35 V
■
Integral suppression diodes (ULN2064B,
ULN2066B and ULN2068B
■
Isolated Darlington pinout (ULN2074B)
■
Versions compatible with all popular logic
families
PowerDIP-16
Description
Designed to interface logic to a wide variety of
high current, high voltage loads, these devices
each contain four NPN Darlington switches
delivering up to 1.5 A with a specified minimum
breakdown of 50 V and a sustaining voltage of 35
V measured at 100 mA. The ULN2064B,
ULN2066B and ULN2068B contain integral
suppression diodes for inductive loads have
common emitters. The ULN2074B feature
isolated Darlington pinouts and is intended for
Table 1.
January 2009
applications such as emitter follower
configurations. Inputs of the ULN2064B,
ULN2068B and ULN2074B are compatible with
popular 5 V logic families and the ULN2066B are
compatible with 6 - 15 V CMOS and PMOS. Type
ULN2068B includes a pre-driver stage to reduce
loading on the control logic.
Device summary
Part numbers
Package
ULN2064B
PowerDIP-16
ULN2066B
PowerDIP-16
ULN2068B
PowerDIP-16
ULN2074B
PowerDIP-16
Rev 2
1/14
www.st.com
14
Contents
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Contents
1
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6
Mounting instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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ULN2064B, ULN2066B, ULN2068B, ULN2074B
1
Diagram
Figure 1.
Schematic diagrams
Diagram
ULN2064B: RIN = 350Ω
ULN2066B: RIN = 3kΩ
ULN2068B: RIN = 2.5kΩ, RS = 900Ω
ULN2074B: RIN = 350Ω
3/14
Pin configuration
2
Pin configuration
Figure 2.
Pin connections (top view)
ULN2064B
ULN2066B
4/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B
ULN2068B
ULN2074B
ULN2064B, ULN2066B, ULN2068B, ULN2074B
3
Maximum ratings
Table 2.
Absolute maximum ratings
Symbol
VCEX
VCE(SUS)
IO
VI
II
VS
PTOT
Parameter
Maximum ratings
Value
Unit
Output voltage
50
V
Output sustaining voltage
35
V
1.75
A
Output current
Input voltage ULN2066B - 2074B
30
Input voltage ULN2064B - 2068B
15
Input current
25
mA
Supply voltage for ULN2068B
10
V
Power dissipation at TPINS = 90 °C
4.3
Power dissipation at TAMB = 70 °C
1
V
W
TAMB
Operating ambient temperature range
- 20 to 85
°C
TSTG
Storage temperature
- 55 to 150
°C
5/14
Electrical characteristics
ULN2064B, ULN2066B, ULN2068B, ULN2074B
4
Electrical characteristics
Table 3.
Electrical characteristics (TA = 25 °C unless otherwise specified).
Symbol
Parameter
Output leakage current
(Figure 5)
ICEX
VCE(SUS)
VCE(SAT)
Collector-emitter sustaining
voltage (Figure 4)
Collector-emitter saturation
voltage (Figure 5)
Input current (Figure 6)
II(ON)
Test condition
Min.
Input voltage (Figure 7)
Max.
VCE = 50V, TA = 25°C
100
VCE = 50V, TA = 70°C
500
IC = 100mA, VI = 0.4V
Unit
µA
35
V
IC = 500mA, IB = 325µA
1.1
IC = 750mA, IB = 935µA
1.2
IC = 1A, IB = 1.25mA
1.3
IC = 1.25A, IB = 2mA
1.4
V
for ULN2064B and ULN2074B
VI = 2.4V
VI = 3.75V
1.4
3.3
4.3
9.6
for ULN2066B,
VI = 5V
VI = 12V
0.6
1.7
1.8
5.2
for ULN2068B,
VI = 2.75V
VI = 3.75V
VI(ON)
Typ.
VCE= 2V, IC = 1A
ULN2064B, ULN2074B,
ULN2066B
VCE= 2V, IC = 1.5A
ULN2064B, ULN2074B,
ULN2066B
ULN2068B
mA
0.55
1.0
2
6.5
V
2.5
10
2.75
Supply current (Figure 10)
for ULN2068B, VI = 2.75V,
IC = 500mA
6
mA
tPLH
Turn-on delay time
0.5 VI to 0.5VO
1
µs
tPHL
Turn-off delay time
0.5 VI to 0.5VO
1.5
µs
IR
Clamp diode leakage current
(Figure 8)
For ULN2064B - ULN2066B ULN2068B, VR = 50V
TA = 25°C
TA = 70°C
50
100
VF
Clamp diode forward voltage
(Figure 9)
For ULN2064B - ULN2066B ULN2068B
IF = 1A
IF = 1.5A
1.75
2
IS
Note:
Note:
6/14
µA
Input voltage is with reference to the substrate (no connection to any other pins) for the
ULN2074B reference is ground for all other types.
1
Input current may be limited by maximum allowable input voltage.
V
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Test circuits
5
Test circuits
Figure 3.
Output leakage current
Figure 5.
Collector-emitter saturation voltage Figure 6.
Input current (ON)
Figure 7.
Input voltage
Clamp diode leakage current
Figure 4.
Figure 8.
Collector-emitter sustaining voltage
7/14
Test circuits
Figure 9.
Clamp diode forward voltage
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Figure 10. Supply current
Figure 11. Input current as a function of input Figure 12. Input current as a function of input
voltage
voltage
Figure 13. Collector current as a function of
input current
8/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B
6
Mounting instructions
Mounting instructions
The RthJA can be reduced by soldering the GND pins to a suitable copper area of the printed
circuit board (Figure 14) or to an external heatsink (Figure 15).
The diagram of Figure 16 shows the maximum dissipated power PTOT and the RthJA as a
function of the side "α" of two equal square copper areas having a thickness of 35 µ (1.4
mils).
During soldering the pins temperature must not exceed 260 °C and the soldering time must
not be longer than 12 seconds.
The external heatsink or printed circuit copper area must be connected to electrical ground.
Figure 14. Example of P.C. board area which is Figure 15. External heatsink mounting
used as heatsink
example
Figure 16. Maximum dissipated power and
junction to ambient thermal
resistance vs. side "α"
Figure 17. Maximum allowable power
dissipation vs. ambient
temperature
9/14
Typical applications
7
Typical applications
Figure 18. Common-anode LED drivers
Figure 19. Common-cathode LED drivers
10/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B
ULN2064B, ULN2066B, ULN2068B, ULN2074B
8
Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
11/14
Package mechanical data
mm
Dim.
Min.
a1
0.51
B
0.85
b
b1
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Typ.
inch.
Max.
Min.
Typ.
Max.
0.020
1.40
0.033
0.50
0.38
0.055
0.020
0.50
D
0.015
0.020
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
OUTLINE AND
MECHANICAL DATA
3.30
0.130
PowerDIP-16
Z
12/14
1.27
0.050
ULN2064B, ULN2066B, ULN2068B, ULN2074B
9
Revision history
Table 4.
Document revision history
Date
Revision
12-Sep-2003
1
First release
22-Jan-2009
2
Modified Table 1 on page 1.
Revision history
Changes
13/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B
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