Siemens IL55B Datasheet
IL55B
PHOTODARLINGTON
OPTOCOUPLER
FEATURES
• High Collector-Emitter Breakdown Voltage—
80 V minimum
• High Isolation Resistance, 1011 W Typical
• Standard Plastic DIP Package
• Underwriters Lab File #E52744
V
DE
• VDE 0884 Available with Option 1
DESCRIPTION
The IL55B is an optically coupled isolator with a Gallium Arsenide infrared LED and a silicon photodarlington sensor. Switching can be achieved while
maintaining a high degree of isolation between driving
and load circuits. These optocouplers can be used to
replace reed and mercury relays with advantages of
long life, high speed switching and elimination of
magnetic fields.
Maximum Ratings
Emitter
Peak Reverse Voltage............................................. 3 V
Continuous Forward Current..............................60 mA
Power Dissipation at 25 °
Derate Linearly from 55 °
C...............................100 mW
C.........................1.33 mW/ ° C
Detector
Collector-Emitter Breakdown Voltage, BV
Emitter-Collector Breakdown Voltage BV
CEO
ECO
.......80 V
..........5 V
Collector (load) Current....................................125 mA
Power Dissipation at 25 °
Derate Linearly from 25 °
C Ambient................150 mW
C...........................2.0 mW/ ° C
Package
Total Dissipation at 25 ° C Ambient ..................250 mW
Derate Linearly from 25 °
C...........................3.3 mW/ ° C
Isolation Test Voltage (between
emitter and detector refered to
standard climate 23 °
DIN 50014) ......................................... 5300 VAC
C/50%RH,
RMS
Creepage ................................................... 7 mm min.
Clearance.................................................... 7 mm min.
Tracking Resitance, Group III
(KC>600 per VDE 110 § 6,Table 3
and DIN 53480/VDE 0330, Part 1
Isolation Resistance
V
=500 V, T
IO
V
=500 V, T
IO
=25 ° C .......................................10
A
=100 ° C .....................................10
A
12
11
Storage Temperature ........................–55 ° C to +150 ° C
Operating Temperature ....................–55 °
Lead Soldering Time at 260 °
C......................... 10 sec.
C to +100 ° C
Package Dimensions in Inches (mm)
3
.248 (6.30)
.256 (6.50)
4
.335 (8.50)
.343 (8.70)
.039
(1.00)
min.
4°
typ.
.018 (0.45)
.022 (0.55)
Electrical Characteristics (T
Parameter Min. Typ. Max. Unit Condition
Emitter
Forward Voltage* 1.25 1.5
Reverse Current* 0.1 10
Capacitance 25 pF V
Detector
BV
CEO
BV
ECO
I
CEO
Package
Current Transfer
Ratio
Coupling
Ω
Ω
Capacitance
Turn-On Time 5
Turn -Off Time 100
12
5
6
Pin One ID.
Anode
1
.130 (3.30)
.150 (3.81)
.020 (.051) min.
.031 (0.80)
.035 (0.90)
.100 (2.54) typ.
=25 ° C)
A
Cathode
NC
2
3
.300 (7.62)
18° typ.
.010 (.25)
.014 (.35)
.300 (7.62)
.347 (8.82)
typ.
V
µ AV
80 V I
510 V
1
µ AV
500 % I
1.5 pF
µ sV
µ sI
Base
6
Collector
5
Emitter
4
.110 (2.79)
.150 (3.81)
I
=50 mA
F
=3.0 V
R
=0 V
R
=1 mA,
C
I
=0
F
I
=100 µ A,
E
I
=0
F
CE
I
=0
F
=10 mA
F
V
CE
CC
=5 mA
F
R
=100 Ω
L
=60 V,
=1.5 V
=10 V
5–1
V
V
V
Figure 1. Forward voltage versus forward current
1.4
1.3
Ta = -55°C
1.2
1.1
Ta = 25°C
1.0
0.9
Ta = 85°C
0.8
VF - Forward Voltage - V
0.7
100101.1
IF - Forward Current - mA
Figure 2. Normalized non-saturated and
saturated CTRce at T
1.2
Normalized to:
Vce = 5 V
1.0
IF = 10 mA
Ta = 25 °C
0.8
0.6
0.4
0.2
0.0
NCTRce - Normalized CTR
.1 1 10 100 1000
=25 ° C versus LED current
A
IF - LED Current - mA
Vce = 5
Vce =1V
Figure 5. High to low propagation delay verus
collector load resistance and LED current
20
15
10
delay - µs
5
0
tpHL - High/Low Propagation
0 5 10 15 20
1KΩ
100Ω
IF - LED Current - mA
Ta = 25°C
Vcc = 5 V
Vth = 1.5
Figure 6. Switching waveforms
t
D
t
t
R
PLH
Figure 3. Normalized non-saturated and saturated
collector-emitter current versus LED current
10
Normalized to:
Ta = 25°C
IF = 10 mA
1
Vce = 5 V
.1
.01
NIce - Normalized Ice
.001
IF - LED Current - mA
Vce = 5 V
Vce = 1V
101.1
100
Figure 4. Low to high propagation delay versus
collector load resistance and LED current
80
Ta = 25°C, Vcc = 5
Vth = 1.5 V
60
40
Delay - µs
20
1KΩ
220Ω
470Ω
t
PHL
Figure 7. Switching schematic
VCC=13.5 V
F=10 KHz,
DF=50%
IF=50 mA
R
C
V
O
VTH=1.5 V
t
S
t
F
100Ω
0
tpLH - Low/High Propagation
0 5 10 15 20
IF - LED Current - mA
5–2
IL55B
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