Transcript
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,VØ
Package Dimensions in Inches (mm) DIP
DC
S'
6
5
4
1
2
3
S
Pin One ID. 3
2
1
4
5
6
.343 (8.70) .335 (8.50) .300 (7.62) Typ.
.039 (1.00) Min.
.150 (3.81) .130 (3.30)
4° Typ.
AGENCY APPROVALS • UL – File No. E52744 • BSI/BABT Cert. No. 7980 • CSA – Certification 093751 • FIMKO Approval
DESCRIPTION
S'
.256 (6.50) .248 (6.30)
18° Typ. .020 (.051) Min.
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
S
.035 (0.90) .031 (0.80)
.022 (0.55) .018 (0.45)
.100 (2.54) Typ.
.014 (.35) .010 (.25)
.150 (3.81) .110 (2.79)
.347 (8.82) .300 (7.62)
SMD .343 (8.71) .335 (8.51)
Pin one I.D.
.256 (6.50) .248 (6.30)
.050 (1.27) typ.
.039 (0.99) min.
.395 (10.03) .375 (9.63) .300 (7.62) typ.
.052 (1.33) .048 (1.22) .150 (3.81) .130 (3.30)
.0098 (.25) .0040 (.10)
3° to 7°
18°
4° .100 (2.54)
.040 (1.016) .020 (0.508)
.315 (8.00) min.
.012 (0.31) .008 (0.20)
only operation. Part Identification
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 dc-
Part Number
Description
LH1525AT
6-pin DIP, Tubes
LH1525AAB
6-pin SMD, Tubes
LH1525AABTR
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
Absolute Maximum Ratings, TA=25°C (except where noted)
Recommended Operating Conditions
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.
120
LOAD CURRENT (mA)
100 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
0 –40
–20
0
20
40
60
80
AMBIENT TEMPERATURE, TA (°C)
Ambient Operating Temperature Range, TA ...................–40° to +85°C Storage Temperature Range, Tstg .................................–40° to +150°C Pin Soldering Temperature, t=10 s max, TS .................................260°C 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, IL≤50 µA, 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=25°C 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
Symbol
Min.
Typ.
Max.
Unit
Test Condition
LED Forward Current for Switch Turn-on
IFon
—
0.33
0.5
mA
IL=100 mA, t=10 ms
LED Forward Current for Switch Turn-off
IFoff
0.01
0.23
—
mA
VL=±350 V, t=100 ms
LED Forward Voltage
VF
0.80
1.16
1.40
V
IF=1.5 mA
17 4.25
26 7.0
36 8.25
Ω Ω
IF=1.5 mA, IL=±50 mA IF=1.5 mA, IL=100 mA
Input
Output ON-resistance: ac/dc, each pole dc Pins 4, 6 (+) to 5 (–)
RON
OFF-resistance
ROFF
—
2000
—
GΩ
IF=0 mA, VL=±100 V
Current Limit
ILMT
170
185
270
mA
IF=1.5 mA, t=5.0 ms VL=7.0 V
Output Off-state Leakage Current
IO
— —
0.67 0.096
200 1.0
nA µA
IF=0 mA, VL=±100 V IF=0 mA, VL=±400 V
Output Capacitance
CO
— —
22 6.42
— —
pF pF
IF=0 mA, VL=1.0 V IF=0 mA, VL=50 V
Switch Offset
VOS
—
0.2
—
µV
IF=5.0 mA
Input/Output Capacitance
CISO
—
0.75
—
pF
VISO=1.0 V
Turn-on Time
ton
— —
1.25 0.22
— 1.0
ms ms
IF=1.5 mA, IL=50 mA IF=5.0 mA, IL=50 mA
Turn-off Time
toff
— —
0.6 0.63
— 0.9
ms ms
IF=1.5 mA, IL=50 mA IF=5.0 mA, IL=50 mA
Transfer
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
LH1525AT/AAB/AABTR 3–108
March 21, 2001-14
Typical Performance Characteristics Figure 4. LED Current for Switch Turn-on/off vs. Temperature
Figure 1. LED Voltage vs. Temperature
400
1.5
LED Current for switch Turn-On (%), norm. to 25°C
LED FORWAD VOLTAGE (V)
1.6
IF = 50 mA IF = 20 mA
1.4 1.3 1.2 IF = 1 mA IF = 2 mA
1.1
1.0 –40
IF = 5 mA IF = 10 mA –20
0 20 40 60 AMBIENT TEMPERATURE, TA (°C)
100
0
-20
0
20
40
60
80
Temperature (°C)
Figure 5. ON-Resistance vs. Temperature
Figure 2. LED Forward Current vs. LED Forward Voltage
40
120
30
100
Change in Ron (%), norm. to 25°C
LED Forward Current (mA)
200
-100 -40
80
IL=100 mA
300
T=8°C T=25°C T=-40°C
80
60 40
20
20 10 0 -10 IL=5mA IL=50mA
-20 -30 -40 -40
0 0
0.5 1 1.5 LED Forward Voltage (V)
2
Figure 3. LED Reverse Current vs. LED Reverse Voltage
-20
0
20 40 Temperature (°C)
60
80
Figure 6. LED Dropout Voltage vs. Temperature 1.21 LED Dropout Voltage (V)
LED Reverse Current (uA)
10 85°C
8
25°C -40°C
6 4 2
20
40 60 LED Reverse Voltage (V)
80
IL=100mA
1.13
1.09
1.05
1.01 -40
0 0
1.17
-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)
LH1525AT/AAB/AABTR 3–109
March 21, 2001-14
Figure 7. Load Current vs. Load Voltage
Figure 10. Switch Capacitance vs. Applied Voltage
300
50
IF=0mA
40
200
Capacitance (pF)
Load Current (mA)
250
-40°C 25°C 85°C
150 100
30
20
10
50 IF=1.5m 0 0
1
2
3 4 5 Load Voltage (V)
6
0
7
10
0
20
30
40
50
60
70
80
90 100
Applied Voltage (V)
Figure 8. Current Limit vs. Temperature
Figure 11. Output Isolation 120
40
100
20 Isolation (dB)
CHANGE IN CURRENT LIMIT (%) NORMALIZED TO 25 °C
IF = 5 mA, t = 5 ms 30
10 0 –10
80
60 40
–20
RL=50 W VP=10V
20
–30 –40 –40
–20
0
20
40
60
0 100
80
1000
100000
1000000
Frequency (Hz)
AMBIENT TEMPERATURE, TA (°C)
Figure 9. Variation in ON-Resistance vs. LED Current
Figure 12. Leakage Current vs. Applied Voltage at Elevated Temperatures
9
300
8
85°C 250
7
Leakage Current (nA)
ac/dc ON-RESISTANCE VARIATION (%) NORMALIZED TO DATA SHEET RON SPECIFICATION @ IF = 5 mA
10000
6 5 4 3 2 1
70°C 50°C
200
25°C
150
100 50
0 0.0
1.0
2.0
3.0
4.0
5.0
0 0
LED FORWARD CURRENT (mA)
100
200
300
400
Load Voltage (V)
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
LH1525AT/AAB/AABTR 3–110
March 21, 2001-14
Figure 13. Insertion Loss vs. Frequency
Figure 16. Switch Offset Voltage vs. Temperature 5
0.4
IF = 5 mA Switch Offset Voltage (µV)
0.35
Insertion Loss (dB)
0.3 0.25 0.2 0.15 RL=600 Ω IF=5 mA
0.1
4
3
2
1
0.05
0
0 100
1000
10000 100000 Frequency (Hz)
50
0.5
Switch Offset Voltage (µV)
0.6
40 85°C 25°C -40°C 20 IF=0mA IL=<50uA
10
40
60
70
80
90
0.4 0.3 0.2 0.1 0.0
0 0
100
200
300
400
0
500
5
Figure 15. Switch Breakdown Voltage vs. Temperature
15
20
25
Figure 18. Turn-On Time vs. LED Current
8
2.0 85°C
6 0.16
25°C
Turn On Time (ms)
4 2 0 –2 –4
-40°C 0.12
0.8
0.4
–6 –8 –40
10
LED Forward Current (mA)
Switch Breakdown Voltage (V)
CHANGE IN BREAKDOWN VOLTAGE (%) NORMALIZED TO 25 °C
50
Figure 17. LED Offset Voltage vs. LED Current
60
30
30
Ambient Temperature, TA (°C)
Figure 14. Switch Breakdown Voltage vs. Load Current
Load Current (uA)
20
1000000
–20
0
20
40
60
IL=50 mA
0.0
80
0
AMBIENT TEMPERATURE, TA (°C)
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
4
8 12 16 LED Forward Current (mA)
20
LH1525AT/AAB/AABTR 3–111
March 21, 2001-14
Figure 19. Turn-On Time vs. Temperature
Figure 21. Turn-off Time vs. LED Current 0.95 0.75
T=-40°C
30 Turn Off Time (ms)
Change in Ton (%), norm. to 25°
45
15
0 IF=5 mA IL=50 mA
-15
-30 -40
0.65 T=25°C 0.55
0.45 T=85°C IL=50 mA
0.35 0.25
-20
0
20
40
60
0
80
4
8
12
16
20
LED Forward Current (mA)
Temperature (°C)
Figure 20. Turn-Off Time vs. Temperature
Change in Toff (%), norm. to 25°C
35
20
5
-10
-25
-40 -40
IF=5 mA IL=50 mA -20
0
20 40 Temperature (°C)
60
80
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
LH1525AT/AAB/AABTR 3–112
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 Ω 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.
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 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.
R2 100 kΩ ANY TTL OR BUFFERED CMOS LOGIC
2001 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
R1 2700 Ω
SSR
LH1525AT/AAB/AABTR 3–113
March 21, 2001-14
