The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat and do not yield any current step up. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.
Specifications:
- Input voltage: 7.5-28V
- Output: 5V/3A
- Conversion efficiency: 96%(Max)
- Switching frequency: 1.5MHz(Max) Typical 1MHz
- Working temperature: -40°C- +85°C
- Load capacity: 3A(Max) Typical 2A
- Dimensions: 42 x 16 x 5mm
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