Omnirel (Leominster, MA), an International Rectifier company, has released the OMR9601SCK, a 3.3V to 2.5V ultra-low dropout linear regulator with 3A capability. The OMR9601SCK high-current regulator is designed for commercial, scientific and military satellite power systems where point-of-load regulation is required. Applications include power conditioning for DSPs, microcontrollers and microprocessors, low-voltage logic circuits, and field-programmable gate-array systems.
The new 1MRrad (Si) device was created after extensive ionizing radiation dose-rate testing on linear devices under a wide range of electrical, environmental conditions. The device is fully tested and documented under extremely low dose-rate symptoms effect on bipolar linear devices, as well as high dose-rate testing, including MIL-STD-883, Method 1019, Condition A. The linear regulator features a maximum dropout voltage of 0.4V at 3A output and a 0.3V dropout at 1A output. A remote shutdown pin is included, which is useful for power sequencing and other control functions.
The OMR9601SCK is housed in an industry-standard, five-pin TO-258 (MO-78AA), and comes with integrated input and output capacitors. The new regulator is radiation-hardened to 1MRrad (Si), and is screened to Class K standards as outlined in MIL-PRF-38534. Pricing for the OMR9601SCK is $400 each in 25 to 99-unit quantities.
