Battery Charging Circuit of LTC1541

Published:2011/7/19 11:11:00 Author:Michel | Keyword: Battery Charging Circuit | From:SeekIC

The above picture is battery charging circuit of LTC1541.It is charging circuit of portable electronic devices and LTC1541 is composed of reference voltage,comparator and operational amplifiers, etc. High precision reference voltage (plus or minus 0.4%) will adjust lithium-ion battery floating voltage to± 1.2% and this is the value that most manufacturers require.VT1 transistor is used to adjust battery charge current and operational amplifier input(feet 1) of LTC1541 amplifies VT1 base current via VT2.VD1 diode is to prevent reverse current circulation produced by adapter or power control failure.Because the circuit is linear regulators, VT1 power consumption needs to be considered.



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