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Current Limited SSRs with
Thermal Management (ThM) and
Voltage Triggered Shutdown (VTS)

Specialized OptoMOS single-pole, normally open Solid State Relays (1-Form-A) with an integrated current limit feature that can replace electromechanical relays while enhancing the robustness of wireline interface applications. The active current-limit circuitry in these relays also has a thermal management feature that provides excellent power cross immunity for improved survivability in harsh environments. These features greatly improve the robustness of end systems that use these devices, when compared to systems using relays without integrated current limit. These devices may be used in both unidirectional DC applications as well as bidirectional AC applications.

Applications:

• Telephony Hook Switch
• VoIP Gateways
• I/O Subsystems
• Electronic Switching
• Medical Equipment (Patient Isolation)
• Security
• Aerospace
• Industrial Controls

Features:


CPC1540, CPC1563, and CPC1593 incorporate an additional safety feature, Voltage Triggered Shutdown, VTS, that quickly shuts the device down if a voltage transient, above the VTS threshold, occurs in the load while current limiting is in effect. These devices are ideal for use in noisy environments where such transients can be expected. CPC1560 is available in 8-pin DIP and surface mount packages; CPC1510, CPC1540, CPC1563, and CPC1593 are available in 6-pin DIP and surface mount packages.

• Integrated Active Current Limit Protection
• Thermal Management
• Voltage-Triggered Shutdown (VTS)
• Low Input Control Current
• Low Drive Power Requirements
• 3750Vrms Isolation, Input-to-Output


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Current Limited SSRs with Thermal Management

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Part
Number
Data Sheet Revision Blocking Voltage
(V)
Input Control Current
(mA)

On-Resistance
Maximum
(Ohms)
DC / AC

Load Current
Maximum
(mA)
DC / AC

Current Limit
Maximum
(mA)
DC / AC

VTS
Threshold
Minimum
(V)
Switching Speed
(ms)
ton / toff
Comments
CPC1510 3 250 2 3.75 / 15 350 / 200 920 / 450 - 2 / 2 Industrial Applications
CPC1540 3 350 2 6.75 / 25 250 / 120 570 / 285 100 * 2 / 2 PSTN Hook Switch Apps
CPC1560 1 60 1.1 1.4 / 5.6 600 / 300 1500 / 900 - 0.1 / 0.4 Fast Switching Speeds
CPC1563 1 600 2 11.75 / 35 250 / 120 570 / 285 100 * 2 / 2 Telecom Secondary Protection
CPC1593 1 600 2 11.75 / 35 250 / 120 570 / 285 17.5 * 2 / 2 HVAC, In-Rush Current Control
* VTS feature active only when device is in current limit.
CPC1510 Block Diagram

 

 
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