5198
Absolute Maximum Ratings
(T
A
=25
C)
Emitter
Reverse Voltage.............................................................................6.0 V
Continuous Forward Current....................................................... 60 mA
Peak Forward Current (1
s)............................................................ 1 A
Power Dissipation .....................................................................100 mW
Derate Linearly from 25
C ................................................... 1.3 mW/
C
Detector
Output Breakdown Voltage........................................................
350 V
Continuous Load Current........................................................
100 mA
Total Power Dissipation.............................................................500 mW
Derate Linearly from 25
C ................................................ See Figure 7
Package
Isolation Test Voltage ...................................................... 3750 VAC
RMS
Isolation Resistance
V
IO
=500 V, T
A
=25
C ..............................................................
10
12
V
IO
=500 V, T
A
=100
C .............................................................
10
11
Power Dissipation .....................................................................500 mW
Derate Linearly from 25
C ................................................... 2.5 mW/
C
Storage Temperature Range.......................................... 40 to +150
C
Operating Temperature Range ........................................ 40 to +85
C
Junction Temperature ..................................................................100
C
Soldering Temperature, 2 mm from case, 10 sec........................260
C
A
K
NC
S
NC
S'
.010 (.25)
.014 (.35)
.110 (2.79)
.150 (3.81)
.130 (3.30)
.150 (3.81)
.020 (.051) Min.
.300 (7.62)
Typ.
.031 (0.80)
.035 (0.90)
.100 (2.54) Typ.
.039
(1.00)
Min.
.018 (0.45)
.022 (0.55)
.248 (6.30)
.256 (6.50)
.335 (8.50)
.343 (8.70)
Pin One ID.
6
5
4
1
2
3
18
Typ.
.300 (7.62)
.347 (8.82)
4
Typ.
1
2
3
6
5
4
Package Dimensions in Inches (mm)
FEATURES
Normally Open, Single Pole Single Throw
Operation
Control 350 VAC or DC Voltage
Switch 100 mA Loads
LED Control Current, 1.5 mA
Low ON-Resistance
dv/dt, >500 V/ms
Isolation Test Voltage, 3750 VAC
RMS
Current Limiting
Underwriters Lab File # E52744
APPLICATIONS
Telephone Switch Hook
High Voltage Test Equipment
TRIAC Driver
Motor Control
Industrial Control Systems
DESCRIPTION
The LH1056 is a single pole single throw (SPST), nor-
mally open (NO), solid state relay. The relay can control
AC or DC loads currents up to 100 mA, with a supply
voltage up to 350 V. The device is packaged in a six pin
0.3 inch dual-in line package. This package offers an
insulation dielectric withstand of 7500 VAC
PK
.
The coupler consists of a AlGaAs LED that is optically
coupled to a dielectrically isolated photodiode array
which drives two series connected high voltage MOS
transistors. The typical ON-Resistance is 30
at 25 mA
and is linear up to 50 mA. The incremental resistance
drops to less than 20
beyond 50 mA while reducing
internal power dissipation at high load currents. There is
built-in current limiting circuitry in the detector chip.
LH1056
HIGH VOLTAGE, SOLID STATE RELAY
OPTOCOUPLER
5199
LH1056
Characteristics
(T
A
=25
C)
Description
Symbol
Min.
Typ.
Max.
Unit
Test Condition
Emitter
Forward Voltage
V
F
1.25
1.5
V
I
F
=10 mA
V
F
Temperature Coefficient
V
F
/
T
2.2
mV/
C
Reverse Current
I
R
1
10
A
V
R
=6 V
Junction Capacitance
C
J
15
pF
V
F
=0 V, f=1 MHz
Dynamic Resistance
V
F
/
I
F
6
W
I
F
=10 mA
Switching Time
t
R
, t
F
1
s
I
F
=10 mA
Detector
Output Breakdown Voltage
V
B
350
380
V
I
B
=50
A
Output Off-State Leakage Current
I
T(OFF)
.03
200
nA
V
T
=100 V, I
F
=0 mA
Feed through Capacitance, pins 4 to 6
C
T
24
pF
I
F
=0, f=1 KHz,
V
L
=4 VP-P
Current Limit
I
LMT
100
150
210
mA
I
F
=5 mA, V
L
=
7 V,
t=10 ms
Package
LED Forward Current for Turn-on
I
FON
2.5
3.5
mA
V
L
=
7 V, I
L
=100 mA,
t=10 ms
LED Forward Current for Turn-off
I
FOFF
0.2
1.3
mA
V
L
=
300 V, I
F
=<5
A
ON Resistance
R
ON
20
30
50
W
I
T
=
25 mA, I
F
=5 mA
Turn-on Time
t
ON
0.9
2.0
ms
I
F
=10 mA, V
L
=+50 V
R
L
=1 k
Turn-off Time
t
OFF
0.7
2.0
ms
Figure 1. Timing test circuit
Figure 2. LED forward current vs. forward voltage
1
2
3
6
5
4
NC
NC
I
F
+
50 V
1 k
IL
1.4
1.3
1.2
1.1
1.0
.1
1
10
100
forward voltage
VF - Forward Voltage - V
IF - Forward Current - mA
Ta = 25
C
Figure 3. Timing waveform
Figure 4. Terminal current vs. terminal voltage
Control
Input
Switch
Output
90%
10%
t
ON
t
OFF
t
R
1
s
t
R
1
s
I
L
I
F
5
4
3
2
1
0
-1
-2
-3
-4
-5
-150
-100
-50
0
50
100
150
terminal voltage
Vt - Terminal Voltage - V
It - Terminal Current - mA
Ta = 25
C
Ta = 70
C
5200
LH1056
Figure 5. Turn on current vs. temperature
Figure 6. Load current vs. temperature
Figure 7. Derating of ILoad vs. temperature
Figure 8. Change in I
limit
vs. temperature
80
60
40
20
0
0
1
2
3
4
5
6
Ambient temperature in
C
IF
th
LED current in mA
80
60
40
20
0
-20
-40
0
50
100
150
200
Ambient temperature in
C
Load Current in mA
IF=2.5 mA
3.5 mA
4.5 mA
>6 mA
80
60
40
20
0
-20
-40
60
70
80
90
100
110
Ambient temperature in
C
Percent of rated
load Current
IF=6 mA
recommended
Absolute
80
60
40
20
0
-20
-40
-40
-20
0
20
40
Ambient Temperature in
C
I limit
in %
Normalized @ 25
C
IF=6 mA
t=10ms
Figure 9.
Ron vs. temperature
Figure 10.
Toff vs. temperature
Figure 11. Change in Ton vs. temperature
Figure 12. Turn-on and turn-off time vs. LED current
80
60
40
20
0
-20
-40
-40
-20
0
20
40
60
Ambient Temperature in
C
R
on
in %
IF=6 mA
IL=25mA
80
60
40
20
0
-20
-40
-100
-50
0
50
100
Ambient temperature in
C
T
off
in %
Normalized @ IF=6 mA
IL=37.5 mA,Ta=25
C
80
60
40
20
0
-20
-40
-50
0
50
100
150
200
250
300
Ambient Temperature in
C
IF=6 mA
IF=2.5 mA
Normalized @IF=6 mA
IL=37.5 mA, Ta=25
C
T
on
in %
20
15
10
5
0
0
1
2
3
4
5
6
IF-LED Current in mA
Turn-on Time in ms
Ton
Toff
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