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STD 5V Boost Regulator

License: CERN Open Hardware License

Mode: Editors' pick

  • 1.9k
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Update time: 2022-10-10 15:20:23
Creation time: 2021-12-17 10:16:01
Description

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Most boost converters only switch off the boost function when disabled, still allowing current to flow through the output via the inductor and the diode. This board uses the FP6277, a synchronous boost converter, that completely switches off the power at the output when the enable pin is pulled to ground. This is great for battery-powered projects that uses sensors that need to be switched off when not in use.

 

With supply chain shortages making it difficult to get hold of even simple components like DC-DC converters, I wanted to design a breakout board around a chip that's easy to source from suppliers like LCSC. At the time of writing (2021-01-07) there are still more than 28 thousand FP6277 chips in stock at LCSC.

 

Features:

  • Input voltage range: 2.4-4.5V
  • Output voltage: 5V
  • Shutdown current: less than 1uA
  • Short-circuit protection
  • Output thermal protection

 

Hardware licensed under CERN Open Hardware License Version 2 - Weakly Reciprocal

OSHWA UK000043

 

Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 22u C1,C3 C0603 2
2 100uF C4 C1206 1
3 FP6277XR-G1 FP6277 SOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP 1
4 PZ254V-11-04P H1 HDR-TH_4P-P2.54-V-M 1
5 2.2uH L1 L1008 1
6 75k R1 R0603 1
7 10k R2 R0603 1
8 300k R9 R0603 1

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