Product category:
Power Supply ICs and Controllers
News Release from: International Rectifier | Subject: Rad-hard ULDOs
Edited by the Electronicstalk Editorial
Team on 17 January 2006
Voltage regulators set for space
missions
A new line of radiation-hardened 3A ULDO voltage regulators suits high-reliability applications where radiation survivability and power consumption are critical parameters.
International Rectifier has introduced a new line of radiation-hardened 3A fixed- or adjustable-output ultra-low-dropout (ULDO) voltage regulators for high-reliability applications such as satellites and space exploration vehicles where radiation survivability and power consumption are critical parameters Compared with other solutions on the market, dropout voltage has been reduced from 1.0 to 0.4V, resulting in a 60% decrease in power consumption
This article was originally published on Electronicstalk on 15 Feb 2001 at 8.00am (UK)
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The rad-hard ULDOs are characterised to single event effect (SEE), with a linear energy transfer (LET) of 84MeV/(mg/cm2), as well as total ionising dose (TID) of up to 1Mrad (Si) and enhanced low dose rate sensitivity (ELDRS) of up to 500krad (Si) in accordance with MIL-STD-883, Method 1019.6, test condition D.
These parts are ideal for satellites operating from near earth orbit to deep space and are available in either space level or unscreened versions.
The regulators feature low noise and fast transient response and are designed for space-level point-of-load and post-DC/DC power conversion for field-programmable gate arrays (FPGAs) and digital signal processing (DSP) controllers.
The new ULDOs maintain performance throughout their current range, and have as much as three times more radiation hardness than other devices on the market.
Two groups of ULDOs are available: the 3.3V input devices are available with 2.5 or 1.8V fixed or adjustable output, and the 5V input devices have adjustable or fixed 2.5 or 3.3V output.
The new ULDO voltage regulators are offered in two hermetic package styles: MO-078AA for printed wire board applications and 8-lead flat pack for surface mount assemblies.
The MO-078AA is a high-density package measuring 0.69 x 0.82in, whereas the surface mount 8-lead flat pack measures 0.75 x 0.75in.
Both packages provide 7.5W of power at full load.
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