IL356
HIGH VOLTAGE SOLID STATE RELAY
OPTOCOUPLER
FEATURES
• Normally Open, Single Pole Single Throw
Operation
• Control 400 VAC or DC Voltage
• Switch 100 mA Loads
• Low ON-Resistance
• dv/dt, > 500 V/ms
• Input and Output Isolation Voltage, 2500 V
RMS
• Current Limiting
• Low Profile: Thickness=0.080 Inches
Applications
• Telephone Switch Hook
• Industrial Control Systems
• PCMCIA Card
DESCRIPTION
The IL356 is a single pole single throw (SPST), nor-
mally open (NO), solid state relay. The relay can con-
trol AC or DC loads currents up to 100 mA, with a
supply voltage up to 400 V. The device is packaged in
a eight pin 2 mm surface mount package. This pack-
age offers an insulation dielectric withstand of 2500
V
RMS
.
The coupler consists of an AlGaAs LED that is opti-
cally coupled to a dielectrically isolated photodiode
array which drives two series connected high voltage
MOS transistors. The typical ON-Resistance is 25 W at
25 mA lead current and is linear up to 50 mA. The
incremental resistance drops to less than 20 W
beyond 50 mA while reducing internal power dissipa-
tion at high load currents. There is built-in current limit-
ing circuitry in the detector chip.
Absolute Maximum Ratings
(T
A
=25
°
C)
Emitter
Reverse Voltage ................................................... 5.0 V
Continuous Forward Current .............................. 60 mA
Peak Forward Current, Non-repetitive (1
µ
s)...... 0.25 A
Power Dissipation.............................................. 50 mW
Derate Linearly from 25
°
C .......................... .66 mW/
°
C
Detector
Output Breakdown Voltage ...............................
±
400 V
Continous Load Current .................................
±
100 mA
Power Dissipation............................................ 300 mW
Derate Linearly from 25
°
C ........................... 5.8 mW/
°
C
Package
Input and Output Isolation Voltage.............. 2500 V
RMS
Total Power Dissipation ................................... 350 mW
Derate Linearly from 25
°
C ........................... 5.3 mW/
°
C
Isolation Resistance
V
IO
=500 V, T
A
=25
°
C ....................................
≥
1012
Ω
V
IO
=500 V, T
A
=100
°
C ..................................
≥
1011
Ω
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
.083 (2.1)
.075 (1.9)
.040 (1.02)
.036 (.91)
.050
(1.27)
Typ.
.016
(.41)
Typ.
.006
(.15)
10°
Typ.
All 8 sides
Preliminary Data Sheet
Package Dimensions in Inches (mm)
Pins 6 & 7
N.C 1
.224 (5.7) .346 (8.79)
.216 (5.5) .326 (8.3)
Pin One ID
A 2
K 3
N.C 4
.230 (5.84)
.224 (5.69)
.017 (.43)
.013 (.33)
.047 (1.19)
.037 (.94)
.301 (7.65)
.281 (7.14)
8 S
7 Heat sink
do not
6 connect
5 S'
40°
3°–7°
Electrical Specifications
at 25
°
C unless otherwise specified
Input (Emitter)
Forward Voltage
Reverse Voltage
Capacitance
Output (S-S’)
Output Off-state
Leakage Current
I
LKG
0.04
200
1.0
OFF Resistance
ON-Resistance
Current Limit
Output
Capacitance
R
OFF
R
ON
I
LMT
C
0
17
170
5000
25
210
37
13
Switch Offset
Transfer Characteristics
LED Forward
Current,
Switch Turn-on
LED Forward
Current,
Switch Turn-off
I
Fon
0.12
0.3
mA
I
L
=100 mA
t=10 ms
V
L
=
±
350 V
t=100 ms
0.25
33
270
nA
µ
A
G
Ω
W
mA
pF
pF
µ
V
I
F
=1.5 mA
I
L
=
±
25 mA
I
F
=1.5 mA
t=5 ms
I
F
=0 mA
V
L
=1 V
I
F
=0 mA
V
L
=50 V
I
F
=5 mA
I
F
=0 mA
V
L
=
±
100 V
I
F
=0 mA
V
L
=
±
400 V
Symbol Min.
V
F
V
R
C
LED
1.15
5
25
Typ.
1.26
Max.
1.45
Units Condition
V
V
pF
I
F
=10 mA
I
R
=10
µ
A
V
R
=0
f=1 MHz
I
Foff
0.001 0.1
mA
Electrical Specifications continued on next page.
5–114
Electrical Specifications
(continued)
Transfer
Characteristics
(continued)
Input/Output
Capacitance
Turn-on Time
Sym-
bol
C
ISO
t
on
Min.
Typ.
0.8
1.00
0.3
0.20
Turn-off Time
t
off
0.25
0.5
ms
1
Max.
Units Condition
pF
ms
ms
ms
V
ISO
=1 V
I
F
=1.5 mA
I
L
=50 mA
I
F
=5.0 mA
I
L
=50 mA
I
F
=1.5 mA
I
L
=50 mA
I
F
=5.0 mA
I
L
=50 mA
Figure 5. Change in current limit vs. temperature
40
IF=5 mA, t=5 ms,
∆ILMT
30
normalized at 25°C
20
10
0
-10
-20
-30
-40
-40 -20
0
20
40
60
80
Ambient Temperature in
°C
∆ILMT
in %
NIFT(min) in %
Figure 6. Min. LED current, switch turn-ON vs. temp.
Figure 1. Timing test circuit
NC
1
2
I
F
3
NC
4
5
6,7
NC
8
1 kΩ
IL
300 IL=100 mA
NIFT normalized at 25°C
200
100
0
-100
-40
+
–
50 V
Figure 2. Timing waveform
t
R
≤1 µs
Control
Input
Switch
Output
90%
I
F
t
R
≤1 µs
I
L
10%
t
OFF
-20
0
20
40
60
Ambient Temperature in
°C
80
t
ON
Figure 3. LED forward current vs. forward voltage
IF Forward current in mA
120
100
80
60
40
20
0
0.6
0.8 1.0 1.2 1.4 1.6 1.8
VF- Input LED forward Voltage
85°C
25°C
Figure 7. Change in ON resistance vs. temperature
50
40 IL=50 mA
30
∆R/R
normalized @ 25°C
20
10
0
-10
-20
-30
-40
-40 -20
0
20
40
60
80
Ambient temperature in
°C
∆R/R
in %
Figure 8. Switching speed vs. LED current
4.0
3.0
2.0
Toff
1.0
0.0
0
4
8
12
16
LED Current in mA
20
Ton
Ton & Toff normalized
at LED Current=2 mA
Ta=25°C
IL-Load Current in mA
Figure 4. Recommended operating conditions
120
>3 ma
80
IF=0.3 ma
1 mA
2 mA
40
0
-40
-20
0
20
40
60
Ambient Temperature in
°C
80
Switching Speed
5–115
IL356
Microcontroller MCU
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