MAX1551 chargers equivalent, sot23 dual-input usb/ac adapter 1-cell li+ battery chargers.
a CHG output to indicate charging status. With USB connected, but without DC power, charge current is set to 100mA (max). This allows charging from both powered and unpow.
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USB 1 5 BAT
AC AD.
The MAX1551/MAX1555 charge a single-cell lithium-ion (Li+) 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 a.
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