The new UC18xx pulse width modulation (PWM) controllers for switching power supply-based applications, plus the new UC1525B-SP offer improved rate sensitivity, allowing for greater than 30 krad(Si) tolerance to low dose rate radiation. In addition, three new parts in TI’s SN54ACxx AC logic family reach a total irradiated dose (TID) level of 50 krad(Si) to allow for lower leakage current and improved radiation performance.
Key Features:
UC18xx-SP devices achieve greater than 30 krad(Si) tolerance to low dose rate irradiation and provide up to 500-KHz voltage/current mode pulse width modulation control;
UC1525B-SP offers a dual output, 250-kHz voltage mode PWM controller;
SN54ACxx-SP devices reach up to 50 krad(Si) of TID levels of radiation and offer quadruple 2-input positive-NOR and NAND gates;
ELDRS radiation test summary are available upon request.
Key Benefits:
Increase long-term system-level reliability up to 30% based on low dose radiation effects;
Reduce expensive repairs, replacement costs and maintenance requirements for critical applications;
Higher “critical mission” life rating; improved devices meet 10- to 15-year requirement for satellite mission lifetimes;
-Fewer incoming inspection/testing criteria and less system-level shielding requirements.
Availability and samples:
The new UC18xx-SP devices, the UC1525B-SP and the new SN54ACxx-SP parts are available through Texas Instruments and its authorized distributors, and are orderable by their respective QML Class-V Standard Military Drawing (SMD).
