Littelfuse/Commercial Vehicle Products

Single and dual OptoMOS® products provide an optically isolated means of switching control circuits. Each package contains one or two phototransistors that are optically coupled with LEDs. Shunt resistors can be used to adjust the threshold current required to activate the output circuitry. The LDA contains sensors that allow for either AC or DC input circuits and single transistor or Darlington transistor outputs. Single and dual optocouplers are ideal for Telecom, Industrial Control and instrumentation circuits, where electrical isolation of control circuitry is crucial.

The OptoMOS® line of solid state relays uses discrete semiconductor components and the patented OptoMOS® architecture to deliver fast, reliable, bounce-free switching in a compact design. From one of the world's smallest single-pole, 4-pin relays to multi-pole and multi-function devices, OptoMOS® products are an ideal solid state replacement for larger reed and electromechanical relays. Compared to these old electromagnetic technologies, our OptoMOS® relays offer significantly lower drive current, small package size, no susceptibility to magnetic interaction, and solid state reliability. All of these are key requirements for the design of today's complex, low-power, multi-channel products. The small 4-pin SOP relays combine our state-of-the-art double-molded, vertical-construction packaging with high performance to give you a reliable product with up to 20% savings in board space compared to other 4-pin products. The dual-pole OptoMOS® relays combine two independent relays into a single 8-pin package, paving the way for designers to condense more functionality into a single component. And the common-input OptoMOS® relays provide a design alternative where two independent outputs are driven by the same input signal.

The OptoMOS® line of solid state relays uses discrete semiconductor components and the patented OptoMOS® architecture to deliver fast, reliable, bounce-free switching in a compact design. From one of the world's smallest single-pole, 4-pin relays to multi-pole and multi-function devices, OptoMOS® products are an ideal solid state replacement for larger reed and electromechanical relays. Compared to these old electromagnetic technologies, our OptoMOS® relays offer significantly lower drive current, small package size, no susceptibility to magnetic interaction, and solid state reliability. All of these are key requirements for the design of today's complex, low-power, multi-channel products. The small 4-pin SOP relays combine our state-of-the-art double-molded, vertical-construction packaging with high performance to give you a reliable product with up to 20% savings in board space compared to other 4-pin products. The dual-pole OptoMOS® relays combine two independent relays into a single 8-pin package, paving the way for designers to condense more functionality into a single component. And the common-input OptoMOS® relays provide a design alternative where two independent outputs are driven by the same input signal.

Specialized OptoMOS® single-pole, normally open Solid State Relays (1-Form-A) with an integrated active current limit and thermal shutdown 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. 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, and CPC1561B is available in a 16-pin SOIC package.

Specialized OptoMOS® single-pole, normally open Solid State Relays (1-Form-A) with an integrated active current limit and thermal shutdown 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. 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, and CPC1561B is available in a 16-pin SOIC package.

Specialized OptoMOS® single-pole, normally open Solid State Relays (1-Form-A) with an integrated active current limit and thermal shutdown 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. 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, and CPC1561B is available in a 16-pin SOIC package.

Specialized OptoMOS® single-pole, normally open Solid State Relays (1-Form-A) with an integrated active current limit and thermal shutdown 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. 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, and CPC1561B is available in a 16-pin SOIC package.

These MOSFET drivers couple infrared light emitting diodes with proprietary photovoltaic integrated circuits. In addition to providing voltage for turn-on of discrete MOSFETs, these patented ICs feature a gate-clamping circuit to provide fast turn-off. These devices offer a significant reduction in drive circuit complexity, board space, and cost of alternate techniques for isolated switching of MOSFETs. Used in conjunction with discrete MOSFETs, these devices are ideal for use in programmable controls, process control, instrumentation and telecommunications, replacing mechanical relays, and bipolar components. When input current is applied to the LED, the emitted light will activate the photodiode array and generate an isolated floating voltage at the output. The optical coupling provides 3750Vrms of input-to-output isolation. These gate drivers are well suited for use in discrete solid state relay designs and other isolated switching applications.

These MOSFET drivers couple infrared light emitting diodes with proprietary photovoltaic integrated circuits. In addition to providing voltage for turn-on of discrete MOSFETs, these patented ICs feature a gate-clamping circuit to provide fast turn-off. These devices offer a significant reduction in drive circuit complexity, board space, and cost of alternate techniques for isolated switching of MOSFETs. Used in conjunction with discrete MOSFETs, these devices are ideal for use in programmable controls, process control, instrumentation and telecommunications, replacing mechanical relays, and bipolar components. When input current is applied to the LED, the emitted light will activate the photodiode array and generate an isolated floating voltage at the output. The optical coupling provides 3750Vrms of input-to-output isolation. These gate drivers are well suited for use in discrete solid state relay designs and other isolated switching applications.

Specialized OptoMOS® single-pole, normally open Solid State Relays (1-Form-A) with an integrated active current limit and thermal shutdown 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. 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, and CPC1561B is available in a 16-pin SOIC package.