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| LH1525AT/AAB/AABTR 1 Form A Solid-State Relays FEATURES * Extremely Low Operating Current * High-speed Operation * 5300 VRMS I/O Isolation * Current-limit Protection * High Surge Capability * Linear, ac/dc Operation * dc-only Option * Clean, Bounce-free Switching * Low Power Consumption * High-reliability Monolithic Receptor * Surface-mountable * Flammability; UL94,VO AGENCY APPROVALS * UL - File No. E52744 * BSI/BABT Cert. No. 7980 * CSA - Certification 093751 * FIMKO Approval APPLICATIONS * General Telecom Switching - Telephone Line Interface - On/off Hook - Ring Relay - Break Switch - Ground Start * Battery-powered Switch Applications * Industrial Controls - Microprocessor Control of Solenoids, Lights, Motors, Heaters, etc. * Programmable Controllers * Instrumentation * See Application Note 56 DESCRIPTION The LH1525 relay as SPST normally open switches (1 Form A) that can replace electromechanical relays in many applications. The relay require a minimal amount of LED drive current to operate, making it ideal for batterypowered and power consumption sensitive applications. The relay is constructed using a GaAIAs LED for actuation control and an integrated monolithic die for the switch output. The die, fabricated in a high-voltage dielectrically isolated technology, comprised of a photodiode array, switch-control circuitry, and MOSFET switches. In addition, the relay employs current-limiting circuitry, enabling it to pass FCC 68.302 and other regulatory surge requirements when overvoltage protection is provided. The relay can be configured for ac/dc or dcPackage Dimensions in Inches (mm) DIP Pin One ID. 3 .256 (6.50) .248 (6.30) 4 5 6 2 1 S 6 DC 5 S' 4 S S' 1 2 3 .343 (8.70) .335 (8.50) .039 (1.00) Min. 4 Typ. .020 (.051) Min. .022 (0.55) .018 (0.45) .035 (0.90) .031 (0.80) .100 (2.54) Typ. .300 (7.62) Typ. .150 (3.81) .130 (3.30) 18 Typ. .014 (.35) .010 (.25) .347 (8.82) .300 (7.62) .150 (3.81) .110 (2.79) SMD .343 (8.71) .335 (8.51) Pin one I.D. .256 (6.50) .248 (6.30) .050 (1.27) typ. .052 (1.33) .048 (1.22) .150 (3.81) .130 (3.30) .0098 (.25) .0040 (.10) .040 (1.016) .020 (0.508) .395 (10.03) .375 (9.63) .300 (7.62) typ. .039 (0.99) min. 3 to 7 18 .012 (0.31) .008 (0.20) 4 .100 (2.54) .315 (8.00) min. only operation. Part Identification Part Number LH1525AT LH1525AAB LH1525AABTR Description 6-pin DIP, Tubes 6-pin SMD, Tubes 6-pin SMD, Tape and Reel 2001 Infineon Technologies Corp. * Optoelectronics Division * San Jose, CA www.infineon.com/opto * 1-888-Infineon (1-888-463-4636) 3-107 March 21, 2001-14 Recommended Operating Conditions 120 100 LOAD CURRENT (mA) 80 60 40 20 IF = 0.3 mA IF = 1.0 mA IF = 1.5 mA IF = 2.0 mA IF = 2.25 mA TO 20 mA -20 0 20 40 60 80 Absolute Maximum Ratings, TA=25C (except where noted) Stresses in excess of the absolute Maximum Ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute Maximum Ratings for extended periods of time can adversely affect reliability. 0 -40 AMBIENT TEMPERATURE, TA (C) Ambient Operating Temperature Range, TA ...................-40 to +85C Storage Temperature Range, Tstg .................................-40 to +150C Pin Soldering Temperature, t=10 s max, TS .................................260C Input/Output Isolation Voltage, t=1.0 s, VISO ....................... 5300 VRMS LED Input Ratings: Continuous Forward Current, IF ..............................................50 mA Reverse Voltage, VR .................................................................. 8.0 V Output Operation (each channel) dc or Peak ac Load Voltage, IL50 A, VL ................................ 400 V Continuous dc Load Current, IL Bidirectional Operation Pin 4 to 6 ..............................................................................125 mA Unidirectional Operation Pins 4, 6 (+) to Pin 5 (-) .........................................................250 mA Power Dissipation, PDISS .........................................................550 mW Electrical Characteristics, TA=25C Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information purposes only and are not part of the testing requirements. Parameter Input LED Forward Current for Switch Turn-on LED Forward Current for Switch Turn-off LED Forward Voltage Output ON-resistance: ac/dc, each pole dc Pins 4, 6 (+) to 5 (-) OFF-resistance Current Limit Output Off-state Leakage Current Output Capacitance Switch Offset Transfer Input/Output Capacitance Turn-on Time Turn-off Time Symbol Min. Typ. Max. Unit Test Condition IFon IFoff VF RON -- 0.01 0.80 0.33 0.23 1.16 0.5 -- 1.40 mA mA V IL=100 mA, t=10 ms VL=350 V, t=100 ms IF=1.5 mA 17 4.25 -- 170 -- -- -- -- -- 26 7.0 2000 185 0.67 0.096 22 6.42 0.2 36 8.25 -- 270 200 1.0 -- -- -- G mA nA A pF pF V IF=1.5 mA, IL=50 mA IF=1.5 mA, IL=100 mA IF=0 mA, VL=100 V IF=1.5 mA, t=5.0 ms VL=7.0 V IF=0 mA, VL=100 V IF=0 mA, VL=400 V IF=0 mA, VL=1.0 V IF=0 mA, VL=50 V IF=5.0 mA VISO=1.0 V IF=1.5 mA, IL=50 mA IF=5.0 mA, IL=50 mA IF=1.5 mA, IL=50 mA IF=5.0 mA, IL=50 mA ROFF ILMT IO CO VOS CISO ton toff -- -- -- -- -- 0.75 1.25 0.22 0.6 0.63 -- -- 1.0 -- 0.9 pF ms ms ms ms 2001 Infineon Technologies Corp. * Optoelectronics Division * San Jose, CA www.infineon.com/opto * 1-888-Infineon (1-888-463-4636) 3-108 LH1525AT/AAB/AABTR March 21, 2001-14 Typical Performance Characteristics Figure 1. LED Voltage vs. Temperature 1.6 1.5 1.4 1.3 1.2 1.1 IF = 1 mA IF = 2 mA IF = 5 mA IF = 10 mA -20 0 20 40 60 AMBIENT TEMPERATURE, TA (C) 80 IF = 20 mA LED Current for switch Turn-On (%), norm. to 25C Figure 4. LED Current for Switch Turn-on/off vs. Temperature 400 LED FORWAD VOLTAGE (V) IF = 50 mA 300 IL=100 mA 200 100 0 1.0 -40 -100 -40 -20 0 20 40 60 80 Temperature (C) Figure 2. LED Forward Current vs. LED Forward Voltage 120 100 T=8C T=25C T=-40C Figure 5. ON-Resistance vs. Temperature 40 30 Change in Ron (%), norm. to 25C 20 10 0 -10 -20 -30 -40 -40 IL=5mA IL=50mA LED Forward Current (mA) 80 60 40 20 0 0 0.5 1 1.5 LED Forward Voltage (V) 2 -20 0 20 40 Temperature (C) 60 80 Figure 3. LED Reverse Current vs. LED Reverse Voltage Figure 6. LED Dropout Voltage vs. Temperature 1.21 10 LED Reverse Current (uA) LED Dropout Voltage (V) 1.17 IL=100mA 8 6 4 2 0 0 20 85C 25C -40C 1.13 1.09 1.05 40 60 LED Reverse Voltage (V) 80 1.01 -40 -20 0 20 40 60 80 Temperature (C) 2001 Infineon Technologies Corp. * Optoelectronics Division * San Jose, CA www.infineon.com/opto * 1-888-Infineon (1-888-463-4636) 3-109 LH1525AT/AAB/AABTR March 21, 2001-14 Figure 7. Load Current vs. Load Voltage 300 250 Load Current (mA) 200 150 100 50 IF=1.5m 0 0 1 2 3 4 5 Load Voltage (V) 6 7 -40C 25C 85C Figure 10. Switch Capacitance vs. Applied Voltage 50 40 Capacitance (pF) IF=0mA 30 20 10 0 0 10 20 30 40 50 60 70 80 90 100 Applied Voltage (V) Figure 8. Current Limit vs. Temperature 40 IF = 5 mA, t = 5 ms CHANGE IN CURRENT LIMIT (%) NORMALIZED TO 25 C 30 20 10 0 -10 -20 -30 -40 -40 -20 0 20 40 60 80 Figure 11. Output Isolation 120 100 Isolation (dB) 80 60 40 RL=50 W VP=10V 20 0 100 1000 10000 100000 1000000 AMBIENT TEMPERATURE, TA (C) Frequency (Hz) Figure 9. Variation in ON-Resistance vs. LED Current 9 8 Figure 12. Leakage Current vs. Applied Voltage at Elevated Temperatures 300 85C 250 Leakage Current (nA) 200 150 70C 50C 25C ac/dc ON-RESISTANCE VARIATION (%) NORMALIZED TO DATA SHEET RON SPECIFICATION @ IF = 5 mA 7 6 5 4 3 2 1 0 0.0 1.0 2.0 3.0 4.0 5.0 100 50 0 0 100 200 300 400 Load Voltage (V) LED FORWARD CURRENT (mA) 2001 Infineon Technologies Corp. * Optoelectronics Division * San Jose, CA www.infineon.com/opto * 1-888-Infineon (1-888-463-4636) 3-110 LH1525AT/AAB/AABTR March 21, 2001-14 Figure 13. Insertion Loss vs. Frequency 0.4 0.35 Figure 16. Switch Offset Voltage vs. Temperature 5 IF = 5 mA Switch Offset Voltage (V) 4 0.3 Insertion Loss (dB) 0.25 0.2 0.15 0.1 0.05 0 100 RL=600 IF=5 mA 3 2 1 0 1000 10000 100000 Frequency (Hz) 1000000 20 30 40 50 60 70 80 90 Ambient Temperature, TA (C) Figure 14. Switch Breakdown Voltage vs. Load Current 60 Figure 17. LED Offset Voltage vs. LED Current 0.6 0.5 0.4 0.3 0.2 0.1 0.0 40 85C 30 25C -40C 20 10 0 0 100 200 300 400 500 Switch Breakdown Voltage (V) IF=0mA IL=<50uA Switch Offset Voltage (V) 50 Load Current (uA) 0 5 10 15 20 25 LED Forward Current (mA) Figure 15. Switch Breakdown Voltage vs. Temperature CHANGE IN BREAKDOWN VOLTAGE (%) NORMALIZED TO 25 C 8 6 Figure 18. Turn-On Time vs. LED Current 2.0 85C 0.16 25C -40C 0.12 4 2 0 -2 -4 -6 -8 -40 Turn On Time (ms) 0.8 0.4 IL=50 mA -20 0 20 40 60 80 0.0 0 4 8 12 16 LED Forward Current (mA) 20 AMBIENT TEMPERATURE, TA (C) 2001 Infineon Technologies Corp. * Optoelectronics Division * San Jose, CA www.infineon.com/opto * 1-888-Infineon (1-888-463-4636) 3-111 LH1525AT/AAB/AABTR March 21, 2001-14 Figure 19. Turn-On Time vs. Temperature 45 Change in Ton (%), norm. to 25 Figure 21. Turn-off Time vs. LED Current 0.95 0.75 T=-40C 30 Turn Off Time (ms) 0.65 T=25C 0.55 15 0 IF=5 mA IL=50 mA 0.45 T=85C 0.35 0.25 IL=50 mA -15 -30 -40 -20 0 20 40 60 80 0 4 8 12 16 20 Temperature (C) LED Forward Current (mA) Figure 20. Turn-Off Time vs. Temperature 35 Change in Toff (%), norm. to 25C 20 5 -10 -25 IF=5 mA IL=50 mA -20 0 20 40 Temperature (C) 60 80 -40 -40 2001 Infineon Technologies Corp. * Optoelectronics Division * San Jose, CA www.infineon.com/opto * 1-888-Infineon (1-888-463-4636) 3-112 LH1525AT/AAB/AABTR March 21, 2001-14 Applications Input Control The LH1525 low turn-on current SSR has highly sensitive photodetection circuits that will detect even the most minute currents flowing through the LED. Leakage current must be considered when designing a circuit to turn on and off these relays. Figure 19 shows a typical logic circuit for providing LED drive current. R1 is the input resistor that limits the amount of current flowing through the LED. For 5.0 V operation, a 2700 resistor will limit the drive current to about 1.4 mA. Where high-speed actuation is desirable, use a lower value resistor for R1. An additional RC peaking circuit is not required with the LH1525 relay. R2 is an optional pull-up resistor which pulls the logic level high ouput (VOH) up toward the VS potential. The pull-up resistance is set at a high value to minimize the overall current drawn from the VS. The primary purpose of this resistor is to keep the differential voltage across the LED below its turn-on threshold. LED dropout voltage is graphed vs. temperature in the Typical Performance Characteristics section. When the logic gate is high, leakage current will flow through R2. R2 will draw up to 8 mA before developing a voltage potential which might possibly turn on the LED. Many applications will operate satisfactorily without a pull-up resistor. In the logic circuit in Figure 1 the only path for current to flow is back into the logic gate. Logic leakage is usually negligible. Each application should be evaluated, however, over the full operating temperature range to make sure that leakage current through the input control LED is kept to a value less than the minimum LED forward current for switch turn-off specification. Figure 22. Input Control Circuit VS R2 100 k ANY TTL OR BUFFERED CMOS LOGIC R1 2700 SSR 2001 Infineon Technologies Corp. * Optoelectronics Division * San Jose, CA www.infineon.com/opto * 1-888-Infineon (1-888-463-4636) 3-113 LH1525AT/AAB/AABTR March 21, 2001-14 |
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