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Circuit Description
LED INDICATION
¶UAC plug in : red and green orange at 0.5 sec
intervals
¶USlot Identification
- Front slot : LED " PHONE"
- Rear slot : LED "BATT"
¶UCharging Status
- Constant Red : Rapid charging
- Constant Green : Rapid charging is terminated.
- Constant Orange : Under or Over Temperature
- Flashing Orange
*If charging is started with any battery of open
cell, equivalent LED should be flashing
Orange.
*If a battery of open cell is loaded on rear slot
whole front slot is charging, the other good
battery.
LED for front slot - Constant RED
LED fro rear slot - flashing Orange
*If a battery of open cell is loaded on front slot
while rear slot charging, the other good
battery.
LED for front slot - flashing Orange
LED for rear slot - constant RED
- Off : battery unloaded
4-5-3 General Characteristics
TEMPERATURE
¶UCharging Temperature Range : 0 to 45 ° C
¶UStorage Temperature Range : -20 to 85 ° C
SAFETY REQUIREMENTS
¶USafety Approval
- Approval No. : UL and CUL, FCC Class B
- Approval No. should be appeared in label
design.
PRIMARY - SECONDARY ISOLATION
¶UWithstanding Voltage : 3K Vdc for 1 sec
¶UCut-off Current : 10mA
4-8
BURN -IN
¶UAll power supply shall be subjected to the burn -
in process
- Temperature : 35 ° C °æ 5 ° C
- Load condition : 600mA and 150mA
- Input Voltage : nominal 110Vac
4-5-4 Schematic Description
BATTERY RECOGNITION CIRCUIT : HIC
¶UBattery identity detection determined to voltage
through R4, R6, R11, R12.
¶UBattery internal between C/F and GND.
CURRENT DETECTION CIRCUIT : R5, R6,
R11, R12, HIC
¶UBattery charging current is changed voltage
detection.
¶UThis voltage inputted u-COM to 16 times
amplified through HIC.
VOLTAGE DETECTION CIRCUIT : HIC
u-COM A/D through HIC pin 12, 13 detected
voltage.
BATTERY TEMPERATURE DETECTION
CIRCUIT : HIC, TH1
Battery temperature detection determined
temperature by use of thermistor resistor variation
of TH1 by HIC.
CURRENT LIMIT CIRCUIT : HIC
When soft-change, current detection circuit limited
current flow to battery, reference voltage more
than detected current, detected current and HIC
internal reference voltage.
Samsung Electronics
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