
Switchable Current Regulators

Switchable current regulators control the flow of voltage to startup circuits. The specialized three-pin metal-oxide–semiconductor field effect transistors (MOSFETs) also support surge protective devices and resettable fuses in communications and networking equipment that rely on switched-mode power supplies. Since MOSFETs perform multiple functions, using switchable current regulators allows circuit and printed circuit board designers to eliminate discrete resistors and diodes.
- Rated at 450 V ac or 900 V ac
- Continuous power dissipation of 40 W
- High dynamic resistance ratings of 58 kΩ or 9–900 kΩ
- Meet JEDEC TO-220 and TO-252 standards for pin spacing
- Operate in analog and mixed-signal systems
- Replace multiple resistors and diodes
- Allow PCB designers to reduce the number of discrete devices and simplify circuits
- Available with option to let users program resistor current source