LH1550 Datasheet, PDF (1/3 Pages) Siemens Semiconductor Group – HIGH VOLTAGE, SOLID STATE RELAY OPTOCOUPLER

LH1550
HIGH VOLTAGE, SOLID STATE RELAY
OPTOCOUPLER
FEATURES
• Normally Open, Single Pole Single Throw Operation
• Control 350 VAC or DC Voltage
• Switch 100 mA Loads
• LED Control Current, 2.5 mA
• Low ON-Resistance, 37 Ω Typ. at 100 mA
• Isolation Test Voltage, 3750 VAC_RMS
• Current Limit Protection
• Underwriters Lab File # E52744
APPLICATIONS
• Telephone Switch Hook
• High Voltage Test Equipment
• TRIAC Driver
• Motor Control
• Industrial Control Systems
DESCRIPTION
The LH1550 is a single pole single throw (SPST), normally
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 dielec-
tric withstand of 3750 V_RMS.
The coupler consists of a AlGaAs LED that is optically cou-
pled to a dielectrically isolated photodiode array which
drives two series connected high voltage MOS transistors.
The typical ON-Resistance is 37 Ω at 25 mA and is linear
up to 50 mA. There is built-in current limiting circuitry in the
detector chip, enabling it to pass FCC 68-302 and other
regulatory voltage surge requirements when over voltage
protection is provided.
Package Dimensions in Inches (mm)
Pin One ID.
321
A1
.248 (6.30)
.256 (6.50)
2
K
6
S
5
NC
.039
(1.00)
Min.
4°
Typ.
.018 (0.45)
.022 (0.55)
4 56
.335 (8.50)
.343 (8.70)
NC ³
.300 (7.62)
Typ.
.130 (3.30)
.150 (3.81)
.020 (.051) Min.
.031 (0.80)
.035 (0.90)
.100 (2.54) Typ.
18° Typ.
.010 (.25)
.014 (.35)
.300 (7.62)
.347 (8.82)
4
S'
.110 (2.79)
.150 (3.81)
Absolute Maximum Ratings (T_A=25°C)
Emitter
Reverse Voltage .................................................................. 5.0 V
Continuous Forward Current .............................................50 mA
Peak Forward Current (1 µs) ..................................................1 A
Power Dissipation........................................................... 100 mW
Derate Linearly from 25°C .......................................... 1.3 mW/°C
Detector
Output Breakdown Voltage................................................. 350 V
Continous Load Current ..................................................100 mA
Total Power Dissipation .................................................. 300 mW
Derate Linearly from 25°C .......................................See Figure 4
Package
Isolation Test Voltage.............................................3750 VAC_RMS
Power Dissipation........................................................... 400 mW
Derate Linearly from 25°C .......................................... 2.5 mW/°C
Isolation Resistance
V_IO=500 V, T_A=25°C.................................................... ≥10¹² Ω
V_IO=500 V, T_A=100°C................................................... ≥10¹¹â„¦
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
5–208