Scoutfly Reduced Board Design

Planned modifications

  • Replace high complexity switching power power supply with a simpler one.
  • use a linear regulator for 3.3V power
  • remove charging circuit
  • remove push button control
  • add switch allow for battery shutoff
  • possibly replace push button ic with some type of RS-Latch / 555 timer finite state machine?
  • include charge contacts to provide power when docked. Integrate functionality into battery shutoff switch. *

Switch:
http://search.digikey.com/us/en/products/TS01AQE/CKC5121-ND/484256

Switching Power Supply 5V:
http://search.digikey.com/us/en/products/AP1501-50K5L-13/AP1501-50K5LDICT-ND/1301637
Inductor:
http://search.digikey.com/us/en/products/SRR1260-330M/SRR1260-330MCT-ND/2127415

Switching Power Supply 3.3V:
http://www.micrel.com/_PDF/mic4680.pdf

New PB Controller:
http://search.digikey.com/us/en/products/MAX16054AZT%2BT/MAX16054AZT%2BTCT-ND/2234292
LDO for PB
http://search.digikey.com/us/en/products/MCP1801T-5002I%2FOT/MCP1801T-5002I%2FOTCT-ND/1979869

TS_31aug10.pdf - Switch to be used to switch between battery and charge contacts for providing power (218 KB) Julian Binder, 03/06/2012 06:52 pm

AP1501.pdf - Switching Power Supply (185 KB) Julian Binder, 03/06/2012 08:41 pm

MAX16054.pdf - New PB Controller (114 KB) Julian Binder, 03/08/2012 05:08 pm