LH1540

LH1540 HIGH VOLTAGE, SOLID STATE RELAY OPTOCOUPLER FEATURES • Normally Open, Single Pole Single Throw Operation • Control 350 VAC or DC Voltage • Switch 150 mA Loads • LED Control Current, 1 mA, Typical • Low ON-Resistance, 20 Ω Typ. at 50 mA • Isolation Test Voltage, 3750 VACRMS • Current Limit Protection • Underwriters Lab File # E52744 Package Dimensions in Inches (mm) Pin One ID. 3 2 1 A .248 (6.30) .256 (6.50) 5 6 NC .335 (8.50) .343 (8.70) .039 (1.00) Min. 4° Typ. .018 (0.45) .022 (0.55) DESCRIPTION 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 20 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. 2 5 3 4 S NC S' .300 (7.62) Typ. .130 (3.30) .150 (3.81) 18° Typ. .020 (.051) Min. .031 (0.80) .035 (0.90) .100 (2.54) Typ. The LH1540 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 dielectric withstand of 3750 VACRMS. 6 K 4 APPLICATIONS • Telephone Switch Hook • High Voltage Test Equipment • TRIAC Driver • Motor Control • Industrial Control Systems 1 .010 (.25) .014 (.35) .110 (2.79) .150 (3.81) .300 (7.62) .347 (8.82) Absolute Maximum Ratings (TA=25°C) Emitter Reverse Voltage................................................................... 6.0 V Continuous Forward Current .............................................60 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 ..................................................150 mA Total Power Dissipation................................................... 400 mW Derate Linearly from 25°C .......................................See Figure 3 Package Isolation Test Voltage .............................................3750 VACRMS Isolation Resistance VIO=500 V, TA=25°C.................................................... ≥1012 Ω VIO=500 V, TA=100°C.................................................. ≥1011 Ω 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 5–205 Characteristics (TA=25°C) Description Symbol Min. Typ. Max. Unit Test Condition 1.5 V IF=10 mA Emitter Forward Voltage VF 1.25 VF Temperature Coefficient ∆VF/∆T –2.2 Reverse Current IR 1 Junction Capacitance CJ Dynamic Resistance Switching Time mV/°C µA VR=6 V 15 pF VF=0 V, f=1 MHz ∆VF/∆IF 6 W IF=10 mA tR, tF 1 µs IF=10 mA V IB=50 µA nA VT=± 100 V, IF=0 mA pF IF=0, f=1 KHz, VL=1 VP-P 10 Detector Output Breakdown Voltage VB 350 Output Off-State Leakage Current IT(OFF) .02 Feed through Capacitance, pins 4 to 6 CT 55 Current Limit ILMT 170 200 210 250 mA IF=5 mA, t=5 ms Package LED Forward Current for Turn-on IFTh 1 2 mA IL=100 mA, t=10 ms LED Forward Current for Turn-off IFOFF 0.2 0.9 mA VL=± 300 V, IL=5 100 IL-Load Current in mA IF Forward current in mA Figure 1. LED forward current vs. forward voltage 120 12 25°C 40 20 0 0.6 0.8 1.0 1.2 1.4 1.6 1.8 VF- Input LED forward Voltage 80 4 60 IF=2 ma 40 3 20 0 -40 -20 0 20 40 60 80 Ambient Temperature in °C +Iss' (mA) ILmt 210 -Vss' (v) -1.0 50 -50 ILmt -210 -Iss' (mA) 1.0 Vss' (v) Figure 4. Current limit vs. temperature 40 IF=5 mA 30 t=5 ms 20 Vl=see Elec.Char 10 0 -10 -20 -30 -40 -40 -20 0 20 40 60 80 ILmt in % Figure 2. Forward current vs. forward voltage Ambient Temperature in °C 5–206 LH1540 Figure 9. tOFF vs. LED current and temperature 0.9 -40 0.8 Toff in ms 40 20 0 -20 -40 -60 -40 85 0 IF=5 mA IL=50 mA Normalized @ 25°C -20 -40 80 100 75 50 25 0 -25 -50 -75 -100 -40 0.0 -0.5 4 6 8 10 12 14 16 18 20 IF- LED Current in mA Figure 8. Turn on time vs. LED current and temp. 10 IL=50 mA 8 - 40°C -20 0 20 40 60 Ambient temperature in °C 80 Figure 11. Change in tOFF vs. temperature 0.5 2 20 0 -10 IL=50 mA Normalized by ON Resistance @ 25°C 1.0 4 8 12 16 IF-LED Current in mA Figure 10. Change in tON vs. temperature 20 ∆Ton in % (∆R/R) in % 1.5 (∆R/R) Ratio of ON-Resistance 25°C 0.4 10 Figure 7. Change in ON-resistance vs. LED current Ton in ms 0.5 0.2 -20 0 20 40 60 80 Ambient Temperature in °C 40 IL=50 mA 30 Normalized by Ron 20 @ 25°C 10 0 -10 -20 -30 -40 -40 -20 0 20 40 60 Ambient temperature in °C IF=5 mA IL=50 mA -20 0 20 40 60 80 Ambient Temperature in °C Figure 12. Timing test circuit and timing waveform IL 25°C 85°C 6 IL=50 mA 0.6 0.3 Figure 6. Change in ON-resistance vs. temperature 0 0.7 ∆Toff in % IFT min % Figure 5. Minimum IRT required vs. temp. 100 80 IL=100 mA 60 Normalized by IFT @ 25°C 1 6 2 5 3 4 1 kΩ IF 4 NC 2 NC + – 50 V 0 0 4 8 12 16 IF-LED Current in mA 20 IF tR≤1 µs Control Input Switch Output IL 90% tON 5–207 tR≤1 µs 10% tOFF LH1540