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Evaluation board for DC-DC power module

Posted: 15 Dec 2010     Print Version  Bookmark and Share

Keywords:National Semiconductor  LMZ1050x  Simple Switcher 

National Semiconductor's LMZ1050xEXT Simple Switcher power module is a DC-DC solution capable of driving up to 3A, 4A, or 5A load with power conversion efficiency, output voltage accuracy, line and load regulation. The LMZ1050xEXT is available in a package that is touted to enhance thermal performance and allows for hand or machine soldering.

The LMZ1050xEXT can accept an input voltage rail between 2.95V and 5.5V and deliver an adjustable output voltage as low as 0.8V. One megahertz fixed frequency PWM switching provides a predictable EMI characteristic. Two external compensation components can be adjusted to set the fastest response time, while allowing the option to use ceramic and/or electrolytic output capacitors. Externally programmable soft-start capacitor facilitates controlled startup.

The LMZ1050xEXT has the following features: lossless cycle-by-cycle peak current limit to protect for over current or short-circuit fault, thermal shutdown, input under-voltage lock-out, and pre-biased startup.

View the PDF document for more information.





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