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Product Attributes

Introduction

The CPC1563 is a normally open (1-Form-A) Solid State Relay with an integrated current limit feature that targets the international hook switch telephony market by providing excellent power-cross immunity for improved survivability in harsh environments. When a fault condition occurs, usually in the form of a voltage rise across the load/relay combination, the relay will limit the current flow through the load to ILMT. As the fault voltage increases, the load is protected by the relay's current limit, but the relay itself must dissipate more and more power. If, while the relay is in current limit, the voltage dropped across the relay rises to the Voltage Triggered Shutdown threshold, VTH, then the current through the relay, and the load, is cut to a nominal 100 μA. In the event of a fault condition that persists, and with or without VTH being exceeded, the temperature of the relay's die could rise to a level that might damage it. In this instance, internal thermal management circuitry shuts the relay down. When the voltage across the relay drops below VTH, and if the device is not in thermal shutdown, normal operation is restored. If the fault condition persists, then the events described above repeat. When provided with adequate overvoltage protection, the CPC1563 can pass regulatory voltage surge requirements. The CPC1563 relay may be used in both AC and DC applications.

Features

• Integrated Active Current-Limit with Voltage Triggered Shutdown Thermal Shutdown
• Guaranteed Turn-On: 2mA Input Control Current
• 600Vₚ Blocking Voltage
• 3750Vrms Input/Output Isolation
• Small Surface Mount Package
• Low Drive Power Requirements
• Arc-Free With No Snubbing Circuits
• No EMI/RFI Generation
• Flammability Rating UL 94 V-0

Applications

• Simplifies Telecom Secondary Protection
• Telephony Hook Switch
• VoIP Gateways
• IP-PBXs
• Satellite and Cable Set-top Boxes
• V.92 (and Other Standard) Modems
• Embedded Modems for POS Terminals, Automated Banking, Remote Metering, Vending Machines, Security, and Surveillance
• Instrumentation
• Medical Equipment—Patient/Equipment Isolation
• Industrial Controls