The SGM40561 is a fully integrated high input voltage
single-cell Li-Ion battery charger. The charger uses a
CC/CV charge profile required by Li-Ion battery. The
charger accepts an input voltage up to 26.5V but is
disabled when the input voltage exceeds the OVP
threshold, typically 10.5V, to prevent excessive power
dissipation. The 26.5V rating eliminates the overvoltage
protection circuit required in a low input voltage
charger.
The charge current and the full-of-charge (FOC) current
are programmable with external resistors. When the
battery voltage is lower than typically 2.55V
(SGM40561-4.2), 2.62V (SGM40561-4.3) or 2.65V
(SGM40561-4.35), the charger preconditions the
battery with typically 19% of the programmed charge
current. When the charge current reduces to the
programmable FOC current level during the CV charge
phase, an FOC indication is provided by the CHG pin,
which is an open-drain output. An internal thermal
foldback function protects the charger from any thermal
failure.SGM40561-4.2YTDE8G/TR SGM40561-4.3YTDE8G/TR SGM40561-4.35YTDE8G/TR资料下载
