LH1540AT/AAB/AABTR
1 Form A
Solid State Relay
FEATURES
• Current Limit Protection
• l/O Isolation, 5300 V
RMS
• Typical R
ON
20
Ω
, max 25
Ω
• Load Voltage 350 V
• Load Current 120 mA
• High Surge Capability
• Linear, AC/DC Operation
• Clean Bounce Free Switching
• Low Power Consumption
• High Reliability Monolithic Receptor
• SMD lead available on tape and reel
• Flammability; UL94,VØ
AGENCY APPROVALS
• UL – File No. E52744
• BSI/BABT Cert. No. 7980
• FIMKO Approval
• CSA – Certification 093751
APPLICATIONS
• General Telecom Switching
– On/off Hook Control
– Ring Delay
– Dial Pulse
– Ground Start
– Ground Fault Protection
• Instrumentation
• Industrial Controls
• See Application Note 56
DESCRIPTION
The LH1540 is robust, ideal for telecom and ground
fault applications. It is a SPST normally open switch (1
Form A) that replaces electromechanical relays in many
applications. It is constructed using a GaAIAs LED for
actuation control and an integrated monolithic die for
the switch output. The die, fabricated in a high-voltage
dielectrically isolated technology, is comprised of a
photodiode array, switch control circuitry and MOSFET
switches. In addition, it employs current-limiting cir-
cuitry which meets FCC 68.302 and other regulatory
voltage surge requirements when overvoltage protec-
tion is provided.
Package Dimensions in Inches (mm)
DIP
Pin One ID.
3
.256 (6.50)
.248 (6.30)
4
5
6
2
1
S
6
DC
5
S'
4
S
S'
1
2
3
.343 (8.70)
.335 (8.50)
.039
(1.00)
Min.
4° Typ.
.020 (.051) Min.
.022 (0.55)
.018 (0.45)
.035 (0.90)
.031 (0.80)
.100 (2.54) Typ.
.300 (7.62)
Typ.
.150 (3.81)
.130 (3.30)
18° Typ.
.014 (.35)
.010 (.25)
.347 (8.82)
.300 (7.62)
.150 (3.81)
.110 (2.79)
SMD
.343 (8.71)
.335 (8.51)
Pin one I.D.
.256 (6.50)
.248 (6.30)
.050 (1.27) typ.
.052 (1.33)
.048 (1.22)
.150 (3.81)
.130 (3.30)
.0098 (.25)
.0040 (.10)
.040 (1.016)
.020 (0.508)
.395 (10.03)
.375 (9.63)
.300 (7.62)
typ.
.039
(0.99)
min.
3° to 7°
18°
.012 (0.31)
.008 (0.20)
4°
.100 (2.54)
.315 (8.00)
min.
Part Identification
Part Number
LH1540AT
LH1540AAB
LH1540AABTR
Description
6-pin DIP, Thru Hole
6-pin SMD
6-pin SMD, Tape and Reel
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
3–154
March 23, 2001-12
Recommended Operating Conditions
120
100
Load Current (mA)
80
60
40
20
0
–40
I
Fon
= 2.0 mA
I
Fon
= 3.0 mA
I
Fon
= 4.0 mA
I
Fon
=
5.0 to 20 mA
Absolute Maximum Ratings,
T
A
=25
°
C
Stresses in excess of the absolute Maximum Ratings can cause perma-
nent damage to the device. These are absolute stress ratings only. Func-
tional operation of the device is not implied at these or any other
conditions in excess of those given in the operational sections of this doc-
ument. Exposure to absolute Maximum Ratings for extended periods of
time can adversely affect reliability.
–20
0
20
40
60
80
Ambient Temperature (°C)
Ambient Temperature Range (
T
A
) .................................... –40 to +85
°
C
Storage Temperature Range (
T
stg
) ................................. –40 to +150
°
C
Pin Soldering Temperature (t=10 s max) (
T
S
) ............................. 260
°
C
Input/Output Isolation Voltage (
V
ISO
) .................................. 5300 V
RMS
LED Continuous Forward Current (
I
F
) .........................................50 mA
LED Reverse Voltage (
I
R
≤
10
µ
A) (
V
R
)........................................... 8.0 V
DC or Peak AC Load Voltage (
I
L
≤
50
µ
A) (
V
L
) .............................. 350 V
Continuous DC Load Current (
I
L
)
Bidirectional Operation............................................................120 mA
Unidirectional Operation..........................................................250 mA
Peak Load Current (t=100 ms) (single shot) (
I
P
) ................................ †
Output Power Dissipation (continuous) (
P
DISS
)........................ 550 mW
† Refer to Current Limit Performance Application Note for a discussion on
relay operation during transient currents.
Electrical Characteristics,
T
A
=25
°
C
Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the
result of engineering evaluations. Typical values are for information only and are not part of the testing requirements.
Parameter
Input
LED Forward Current, Switch Turn-on
LED Forward Current, Switch Turn-off
LED Forward Voltage
Output
ON-resistance
ac/dc: Pin 4 (±) to 6 (±)
dc: Pin 4, 6 (+) to 5 (±)
OFF-resistance
Current Limit
ac/dc: Pin 4 (±) to 6 (±)
dc: Pin 4, 6 (+) to 5 (±)
Off-state Leakage Current
I
Fon
I
Foff
V
F
—
0.2
1.15
1.0
0.9
1.26
2.0
—
1.45
mA
mA
V
Ω
I
L
=100 mA, t=10 ms
V
L
±300 V
I
F
=10 mA
I
F
=5.0 mA,
I
L
=50 mA
I
F
=5.0 mA,
I
L
=100 mA
G
Ω
mA
I
F
=0 mA,
V
L
=±100 V
I
F
=5.0 mA, t=5.0 ms
V
L
=±6.0 V
I
F
=5.0 mA, t=5.0 ms
V
L
=±4.0 V
nA
µ
A
pF
I
F
=0 mA,
V
L
=±100 V
I
F
=0 mA,
V
L
=±350 V
I
F
=0 mA,
V
L
=1.0 V
I
F
=0 mA,
V
L
=50 V
V
I
F
=5.0 mA
V
ISO
=1.0 V
I
F
=5.0 mA,
I
L
=50 mA
I
F
=5.0 mA,
I
L
=50 mA
Sym.
Min.
Typ.
Max.
Units
Test Conditions
R
ON
12
3.0
20
5.0
5000
210
—
0.32
1.0
55
10
0.15
25
6.25
—
250
—
200
350
—
—
—
R
OFF
I
LMT
0.5
175
—
—
—
—
Output Capacitance
Pin 4 to 6
Switch Offset
Transfer
Input/Output Capacitance
Turn-on Time
Turn-off Time
—
—
—
—
—
C
ISO
t
on
t
off
—
—
—
0.8
1.2
0.5
—
2.0
2.0
pF
ms
ms
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
3–155
LH1540AT/AAB/AABTR
March 23, 2001-12
Typical Performance Characteristics
Figure 1. LED Voltage vs. Temperature
1.6
CHANGE IN CURRENT LIMIT (%)
NORMALIZED TO 25°C
LED FORWARD VOLTAGE (V)
1.5
I
F
=50 mA
1.4
1.3
1.2
I
F
=1.0 mA
1.1 I
F
=2.0 mA
1.0
–40
I
F
=5.0 mA
I
F
=10 mA
–20
0
20
40
60
80
I
F
=20 mA
Figure 4. Current Limit vs. Temperature
40
30
20
10
0
–10
–20
–30
–40
–40
–20
0
20
40
60
80
I
F
=5.0 mA
t=5 ms
V
L
=
SEE ELEC. CHAR.
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
Figure 2. LED Dropout Voltage vs. Temperature
1.20
LED FORWARD VOLTAGE (V)
I
L
=100 mA
1.15
TYP.
1.10
MIN.
1.05
Figure 5. ON-Resistance vs. Temperature
50
CHANGE IN ON-RESISTANCE (%)
NORMALIZED TO 25°C
40
30
20
10
0
–10
–20
–30
–40
–40
–20
0
20
40
60
80
I
L
=50 mA
1.00
0.95
–40
–20
0
20
40
60
80
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
Figure 3. LED Current for Switch Turn-on vs. Temperature
LED FORWARD CURRENT FOR SWITCH
TURN-ON (%) NORMALIZED TO 25°C
100
I
L
=100 mA
80
60
40
20
0
–20
–40
–60
–40
–20
0
20
40
60
80
Figure 6. Variation in ON-Resistance vs. LED Current
ac/dc ON-RESISTANCE VARIATION (%)
NORMALIZED TC DATA SHEET R
ON
SPECIFICATION @ I
F
=5.0 mA
1.5
I
L
=50 mA
1.0
0.5
0
–0.5
0
4
8
12
16
20
LED FORWARD CURRENT (mA)
AMBIENT TEMPERATURE (°C)
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
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LH1540AT/AAB/AABTR
March 23, 2001-12
Figure 7. Switch Capacitance vs. Applied Voltage
80
70
CAPACITANCE (pF)
60
50
40
30
20
10
0
0
20
40
60
80
100
APPLIED VOLTAGE (V)
I
F
=0
T
A
=25°C
f=1.0 MHz
Figure 10. Leakage Current vs. Applied Voltage
OFF-STATE LEAKAGE CURRENT (pA)
100
90
80
70
60
50
40
30
20
10
0
0
50
100
150
200
250 300
350
400
I
F
=0
T
A
=25°C
LOAD VOLTAGE (V)
Figure 8. Insertion Loss vs. Frequency
Figure 11. Leakage Current vs. Applied Voltage at
Elevated Temperatures
OFF-STATE LEAKAGE CURRENT (nA)
3.0
2.5
2.0
1.5
1.0
0.5
0
0
50
100
150
200
250
300
350
400
LOAD VOLTAGE (V)
70°C
85°C
0.30
INSERTION LOSS (dB)
0.25
0.20
0.15
0.10
0.05
0
R
L
=600
Ω
50°C
10
2
10
3
10
4
10
5
FREQUENCY (Hz)
Figure 9. Output Isolation
100
80
ISOLATION (dB)
V
P
=10 V
R
L
=50
Ω
Figure 12. Switch Breakdown Voltage vs. Temperature
CHANGE IN BREAKDOWN VOLTAGE (%)
NORMALIZED TO 25°C
8
6
4
2
0
–2
–4
–6
–8
–40
–20
0
20
40
60
80
60
40
20
0
10
2
10
3
10
4
10
5
10
6
10
7
FREQUENCY (Hz)
AMBIENT TEMPERATURE (°C)
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
3–157
LH1540AT/AAB/AABTR
March 23, 2001-12
Figure 13. Switch Offset Voltage vs. Temperature
3.5
SWITCH OFFSET VOLTAGE (µV)
3.0
2.5
2.0
1.5
1.0
0.5
0
20
30
40
50
60
70
80
90
AMBIENT TEMPERATURE (°C)
I
F
=5.0 mA
Figure 16. Turn-off Time vs. Temperature
160
140
120
100
80
60
40
20
0
–20
–40
–60
–80
–40
CHANGE IN TURN-OFF TIME (%)
NORMALIZED TO 25°C
I
F
=5.0 mA
I
L
=50 mA
–20
0
20
40
60
80
AMBIENT TEMPERATURE (°C)
Figure 14. Switch Offset Voltage vs. LED Current
0.6
SWITCH OFFSET VOLTAGE (µV)
0.5
Figure 17. Turn-on Time vs. LED Current
10
8
–40°C
6
25°C
85°C
4
–40°C
2
0
25°C
85°C
I
L
=50 mA
0.4
0.3
0.2
0.1
0
0
5
10
15
20
25
LED FORWARD CURRENT (mA)
TURN-ON TIME (ms)
0
10
20
30
40
50
LED FORWARD CURRENT (mA)
Figure 15. Turn-on Time vs. Temperature
60
50
40
30
20
10
0
–10
–20
–30
–40
–40
–20
0
20
40
I
F
=5.0 mA
I
L
=50 mA
60
80
Figure 18. Turn-off Time vs. LED Current
1.4
I
L
=50 mA
1.2
TURN-ON TIME (ms)
1.0
0.8
0.6
0.4
0.2
0
10
20
30
40
50
LED FORWARD CURRENT (mA)
25°C
–40°C
CHANGE IN TURN-ON TIME (%)
NORMALIZED TO 25°C
85°C
AMBIENT TEMPERATURE (°C)
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
3–158
LH1540AT/AAB/AABTR
March 23, 2001-12
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