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Circuit Description
BATTERY RECOGNITION CIRCUIT : U4
¶UBattery identity detection determined to voltage
detection
¶UBattery internal between ID & GND
CURRENT DETECTION CIRCUIT : R14, R15,
R16, U4
¶UBattery charging current is changed voltage
through R14, R15, R16
¶UThis voltage inputted u-COM to 16times
amplified through U4
VOLTAGE DETECTION CIRCUIT : U4
¶Uu-COM A/D through U4 pin 15 detected
voltage
BATTERY TEMPERATURE DETECTION
CIRCUIT : U4
¶UBattery temperature detection determined
temperature by use of thermistor resistor
variation of battery by U4
CURRENT LIMIT CIRCUIT : U4
¶UWhen soft-change, current detection circuit
limited current flow to battery, reference voltage
more than detected current, detected current
and U4 internal reference voltage.
4-12
Samsung Electronics
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