USB Lipo Battery Charger by MAX1555
This entry was posted on Monday, January 4th, 2010 at 12:22 am and is filed under battery charger.
The MAX1551 and MAX1555 charge a single-cell 3.7V lithium-ion LiPo battery from both USB and AC adapter sources. They operate with no external FETs or diodes, and accept operating input voltages up to 7V. On-chip thermal limiting simplifies PC board layout and allows optimum charging rate without the thermal limits imposed by worst-case battery and input voltage. [...]
Read more source: http://electronics-diy.com/electronic_schematic.php?id=808
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