功能

• Description
• Who doesn't occasionally need power regulation? We certainly do, so we've designed the SparkFun Buck Regulator Breakout to us with just such a task. Featuring the AP63203 from Diodes Inc, this breakout board takes advantage of a 2A synchronous buck converter that has a wide input voltage range of 3.8V to 32V and fully integrated 125mΩ high-side power MOSFET/68mΩ lowside power MOSFET to provide high-efficiency step-down DC/DC conversion. All of this snuggled up in a low-profile, TSOT26 package that's integrated into a 1in. by 1in. board.
• Input power for this Buck Regulator can be supplied in a number of ways. There are screw terminals on the right side of the board, solder pads for a barrel jack, which can be mounted on the top or bottom side of the board, and the plated through holes on the left side of the board can all be d as input. Output can be obtained via the screw terminals or the plated through holes. Additionally, to dissipate some of the excess heat, we've added a copper pad for a heat sink on the back of the board.
• Frequency Spread Spectrum(FSS)reduces EMI and a proprietary gate driver scheme resists switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further erases high-frequency radiated EMI noise.
• Get Started with the SparkFun Buck Regulator Guide
• Features
• VIN 3.8V to 32V
• VOUT 3.3V
• Up to 2A Continuous Output Current
• 0.8V ± 1% Reference Voltage
• 22μA Ultralow Quiescent Current
• Switching Frequency - 1.1MHz
• Supports Pulse Frequency Modulation(PFM)
• Up to 80% Efficiency at 1mA Light Load
• Up to 88% Efficiency at 5mA Light Load
• Fixed Output Voltage - 3.3V
• Proprietary Gate Driver Design for Best EMI Reduction
• Frequency Spread Spectrum(FSS)to Reduce EMI
• Precision Enable Threshold to Adjust UVLO
• Protection Circuitry
• Overvoltage Protection
• Cycle-by-Cycle Peak Current Limit
• Thermal Shutdown