LH1550AT1

Control Voltage Range :
Product Type : PCB Mount
Contact Form : 1 Form A (SPST-NO)
Output Device : MOSFET
Mounting Style : Through Hole
Load Voltage Rating : 350 V
Package / Case : PDIP-6
Load Current Rating : 0.1 A


Features:

• Current Limit Protection
• Isolation Test Voltage 5300 V _RMS
• Typical R_ON 28
• Load Voltage 350 V
• Load Current 120 mA
• High Surge Capability
• Clean Bounce Free Switching
• Low Power Consumption
• High Reliability Monolithic Detector
• SMD Lead Available on Tape and Reel
• Lead-free component
• Component in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC




Application

·General Telecom Switching
- On/off Hook Control
- Ring Delay
- Dial Pulse
- Ground Start
- Ground Fault Protection
·Instrumentation
·Industrial Controls




Specifications

Absolute Maximum Ratings, Tamb = 25 °C
Stresses in excess of the absolute Maximum Ratings can cause permanent damage to the device. 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.

1) Refer to Current Limit Performance Application Note 58 for a discussion on relay operation during transient currents.

Description

The LH1550AT1 is robust, ideal for telecom and ground fault applications. It is a SPST normally open switch (1 Form A) that replaces electromechanical relays in many applications. It is similar to the LH1540, but has a characteristically higher On resistance. The LH1550AT1 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, is comprised of a photodiode array, switch control circuitry and MOSFET switches. In addition, LH1550AT1 employs current-limiting circuitry which meets FCC 68.302 and other regulatory voltage surge requirements when overvoltage protection is provided.