LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com
Vishay Semiconductors
1 Form A Solid-State Relay
FEATURES
SMD
S
S
6
DC
5
S'
4
S'
• Current limit protection
• Isolation test voltage 5300 V
RMS
• Typical R
ON
20
,
max. 25
• Load voltage 350 V
• Load current 120 mA
DIP
• High surge capability
• Clean bounce free switching
• Low power consumption
1
2
3
• SMD lead available on tape and reel
• Compliant to RoHS Directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
i179041-2
DESCRIPTION
The LH1540 is robust, ideal for telecom and ground fault
applications. It is an SPST normally open switch (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 circuitry which meets lightning
surge testing as per ANSI/TIA-968-B and other regulatory
voltage surge requirements when overvoltage protection is
provided.
APPLICATIONS
• General telecom switching
• Instrumentation
• Industrial controls
Note
• See “solid-state relays” (application note 56)
AGENCY APPROVALS
UL1577:
CSA:
BSI:
FIMKO:
DIN EN:
file no. E52744 system code H, double protection
certification no. 093751
certification no. 7979/7980
25419
60747-5-2 (VDE 0884)/60747-5-5 (pending),
available with option 1
ORDERING INFORMATION
L
H
1
5
4
0
#
ELECTR.
VARIATION
#
#
T
R
DIP
SMD
PART NUMBER
PACKAGE
CONFIG.
TAPE AND
REEL
7.62 mm
> 0.1 mm
PACKAGE
SMD-6
SMD-6, tape and reel
DIP-6, thru hole
UL, CSA, BSI, FIMKO
LH1540AAB
LH1540AABTR
LH1540AT
Rev. 1.9, 25-Jul-11
1
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83833
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com
Vishay Semiconductors
TEST CONDITION
SYMBOL
I
F
I
R
10 μA
I
L
50 μA
V
R
V
L
I
L
I
L
t = 100 ms
I
P
T
amb
T
stg
t = 10 s max.
T
sld
V
ISO
P
diss
VALUE
50
8
350
120
250
(1)
ABSOLUTE MAXIMUM RATINGS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
INPUT
LED continuous forward current
LED reverse voltage
OUTPUT
DC or peak AC load voltage
Continuous DC load current -
bidirectional operation
Continuous DC load current -
unidirectional operation
Peak load current (single shot)
SSR
Ambient temperature range
Storage temperature range
Pin soldering temperature
(2)
Input to output isolation voltage
Output power dissipation (continuous)
- 40 to + 85
- 40 to + 150
260
5300
550
°C
°C
°C
V
RMS
mW
V
mA
mA
mA
mA
V
UNIT
Notes
• Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not
implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute
maximum ratings for extended periods of the time can adversely affect reliability.
(1)
Refer to current limit performance application note for a discussion on relay operation during transient currents.
(2)
Refer to reflow profile for soldering conditions for surface mounted devices (SMD). Refer to wave profile for soldering conditions for through
hole devices (DIP).
ELECTRICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
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 (±)
On-resistance DC: pin 4, 6 (+) to 5 (±)
Off-resistance
Current limit AC
(1)
: pin 4 (±) to 6 (±)
Off-state leakage current
Output capacitance pin 4 to 6
Switch offset
TRANSFER
Capacitance (input to output)
V
ISO
= 1 V
C
IO
0.8
pF
Notes
• 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.
(1)
No DC mode current limit available.
I
F
= 5 mA, I
L
= 50 mA
I
F
= 5 mA, I
L
= 100 mA
I
F
= 0 mA, V
L
= ± 100 V
I
F
= 5 mA, V
L
= ± 6 V, t = 5 ms
I
F
= 0 mA, V
L
= ± 100 V
I
F
= 0 mA, V
L
= ± 350 V
I
F
= 0 mA, V
L
= 1 V
I
F
= 0 mA, V
L
= 50 V
I
F
= 5 mA
R
ON
R
ON
R
OFF
I
LMT
I
O
I
O
C
O
C
O
V
OS
55
10
0.15
12
3
0.5
175
20
5
5000
210
0.32
250
200
1
25
6.25
G
mA
nA
μA
pF
pF
μV
I
L
= 100 mA, t = 10 ms
V
L
= ± 300 V
I
F
= 10 mA
I
Fon
I
Foff
V
F
0.2
1.15
1
0.9
1.26
1.45
2
mA
mA
V
TEST CONDITION
SYMBOL
MIN.
TYP.
MAX.
UNIT
SWITCHING CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Turn-on time
Turn-off time
TEST CONDITION
I
F
= 5 mA, I
L
= 50 mA
I
F
= 5 mA, I
L
= 50 mA
SYMBOL
t
on
t
off
MIN.
TYP.
1.2
0.5
MAX.
2
2
UNIT
ms
ms
Rev. 1.9, 25-Jul-11
2
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83833
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com
Vishay Semiconductors
SAFETY AND INSULATION RATINGS
PARAMETER
Climatic classification
Pollution degree
Tracking resistance
(comparative tracking index)
Highest allowable overvoltage
Max. working insulation voltage
Insulation resistance at 25 °C
Insulation resistance at T
S
Insulation resistance at 100 °C
Partial discharge test voltage
Safety limiting values -
maximum values allowed
in the event of a failure
Case temperature
Input current
Output power
Measured from input terminals to output
terminals, shortest distance through air
Measured from input terminals to output
terminals, shortest distance path along body
Methode a, V
pd
= V
IORM
x 1.875
V
IO
= 500 V
TEST CONDITION
IEC 68 part 1
DIN VDE 0109
Insulation group llla
Transient overvoltage
Recurring peak voltage
CTI
V
IOTM
V
IORM
R
IS
R
IS
R
IS
V
pd
T
SI
I
SI
P
SO
SYMBOL
VALUE
40/85/21
2
175
8000
890
10
12
10
9
10
11
V
peak
V
peak
V
peak
°C
mA
mW
mm
mm
UNIT
1669
175
300
700
7
7
Minimum external air gap (clearance)
Minimum external tracking (creepage)
TYPICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
120
100
1.20
I
L
= 100 mA
1.15
Typ.
1.10
Min.
80
60
40
20
I
FON
= 5.0 mA
to 20 mA
I
FON
= 2.0 mA
I
FON
= 4.0 mA
I
FON
= 3.0 mA
LED Forward Voltage (V)
20
40
60
80
Load Current (mA)
1.05
1.00
0.95
- 40
0
- 40
i1540at_00
- 20
0
- 20
0
20
40
60
80
Ambient Temperature (°C)
i1540at_02
Ambient Temperature (°C)
Fig. 1 - Recommended Operating Conditions
1.6
Fig. 3 - LED Dropout Voltage vs. Temperature
LED Forward Current for Switch
Turn-on (%), Normalized to 25 °C
100
80
60
40
20
0
- 20
- 40
- 60
- 40
- 20
0
20
40
60
80
I
L
= 100 mA
LED Forward Voltage (V)
1.5
I
F
= 20 mA
1.4
1.3
1.2
I
F
= 1.0 mA
1.1 I = 2.0 mA
F
1.0
- 40
I
F
= 50 mA
I
F
= 5.0 mA
I
F
= 10 mA
0
20
40
60
80
- 20
i1540at_01
T
A
- Ambient Temperature (°C)
i1540at_03
Ambient Temperature (°C)
Fig. 2 - LED Voltage vs. Temperature
Fig. 4 - LED Current for Switch Turn-on vs. Temperature
Rev. 1.9, 25-Jul-11
3
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83833
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com
Vishay Semiconductors
40
80
Change in Current Limit (%)
Normalized to 25 °C
30
20
10
0
- 10
- 20
- 30
- 40
- 40
- 20
0
Capacitance (pF)
I
F
= 5.0 mA
t = 5.0 ms
V
L
= see elec. char.
70
60
50
40
30
20
10
0
I
F
= 0 mA
f = 1.0 MHz
20
40
60
80
0
i1540at_07
20
40
60
80
100
i1540at_04
Ambient Temperature (°C)
Fig. 5 - Current Limit vs. Temperature
Applied Voltage (V)
Fig. 8 - Switch Capacitance vs. Applied Voltage
50
0.30
I
L
= 50 mA
0.25
R
L
= 600
Ω
Change in On-resistance (%)
Normalized to 25 °C
40
30
20
10
0
- 10
- 20
- 30
Insertion Loss (dB)
0.20
0.15
0.10
0.05
0
10
2
- 40
- 40
i1540at_05
- 20
0
20
40
60
80
10
3
10
4
10
5
Ambient Temperature (°C)
Fig. 6 - On-resistance vs. Temperature
i1540at_08
Frequency (Hz)
Fig. 9 - Insertion Loss vs. Frequency
AC/DC On-resistance Variation (%)
Normalized to Datasheet R
on
Specification at I
F
= 5.0 mA
1.5
I
L
= 50 mA
1.0
100
80
Isolation (dB)
60
V
P
= 10 V
R
L
= 50
Ω
40
20
0
10
2
0.5
0
- 0.5
0
4
8
12
16
20
10
3
10
4
10
5
10
6
10
7
i1540at_06
LED Forward Current (mA)
i1540at_09
Frequency (Hz)
Fig. 10 - Output Isolation
Fig. 7 - Variation in On-resistance vs. LED Current
Rev. 1.9, 25-Jul-11
4
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83833
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com
Vishay Semiconductors
80
3.5
T = 25 °C
Off-state Leakage Current (nA)
70
60
50
40
30
20
10
0
0
Switch Offset Voltage (µV)
3.0
2.5
2.0
1.5
1.0
0.5
0
20
I
F
= 5.0 mA
100
200
300
400
30
40
50
60
70
80
90
17321
Load Voltage (V)
i1540at_13
Ambient Temperature (°C)
Fig. 11 - Leakage Current vs. Applied Voltage
Fig. 14 - Switch Offset Voltage vs. Temperature
140
0.6
Off-state Leakage Current (nA)
120
100
80
T = 75 °C
60
40
20
0
0
100
200
300
400
T = 50 °C
T = 85 °C
Switch Offset Voltage (µV)
0.5
0.4
0.3
0.2
0.1
0
0
5
10
15
20
25
17322
Load Voltage (V)
Fig. 12 - Leakage Current vs.
Applied Voltage at Elevated Temperatures
i1540at_14
LED Forward Current (mA)
Fig. 15 - Switch Offset Voltage vs. LED Current
Change in Breakdown Voltage (%)
Normalized to 25 °C
8
60
Change in Turn-on Time (%)
Normalized to 25 °c
6
4
2
0
-2
-4
-6
-8
- 40
- 20
0
20
40
60
80
50
40
30
20
10
0
- 10
- 20
- 30
I
F
= 5.0 mA
I
L
= 50 mA
- 40
- 40
i1540at_15
- 20
0
20
40
60
80
i1540at_12
Ambient Temperature (°C)
Ambient Temperature (°C)
Fig. 13 - Switch Breakdown Voltage vs. Temperature
Fig. 16 - Turn-on Time vs. Temperature
Rev. 1.9, 25-Jul-11
5
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83833
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
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