Cigarette Lighter Adapter - Samsung SCH-1000 Service Manual

Circuit Description

4-6 Cigarette Lighter Adapter

4-6-1 Funtional Specification
SUMMARY
This standard describes on the specifications of
CLA(Cigarette Lighter Adaptor) for the SCH-1000
of SAMSUNG.
CLA AS ADAPTOR AND CHARGER
¶UAdaptor
directly supplies power in order to operate
cellular phone independent of the battery pack.
¶UCharger
for the NiMH battery pack
ELECTRICAL SPECIFICATION
¶UInput Voltage :
11V to 16.5V DC
(normal voltage : 13.5V DC)
¶UOutput Current
- HHP POWER : supplies 100mA if cellular
phone mode is in stand_by state and 300mA
to 600mA in carrier_on state.
- Battery Charge Current : 390mA +/- 10%
(carrier_off) 10ßðæ1 0ßÃ(carrier_on, full_charge)
¶UOutput Voltage (when 2K•ÿ is loaded to the
battery charge terminal)
- Battery Charge Terminal : 5.8°æ0.5V
- HHP POWER Terminal : 5.8V(+/- 0.3V)
¶URipple & Noise : 50mVp-p
¶UNormal Fuse Capacity : 250V, 2A
¶UCharge Time : 3Hrs. at 850mAh6Hrs. at
1500mAh
ENVIRONMENTAL SPECIFICATION
¶UTemperature
- Operating Temperature : 0°... to 50°...
- Storage Temperature : -20°... to 85°...
¶UHumidity
- Operating Humidity : 5% to 90%
- Storage Humidity : 5% to 95%
4-12
FUNCTIONS OF CLA
¶UProtection Circuit
Protection Circuit is the circuit against the
electrical stress which is occured at
unexpected conditions of the source power of
CLA unit such as reverse voltage or over-
current.
¶UDetection of cellular phone
If cellular phone is connected to CLA, the
CLA lamp is on to display whether charge
will be done normaly or not.
¶UDetect Carrier-On
In the case of Carrier-On, CLA detects the
resistance of the Cellular Phone and reduces
the charge current.
¶UDetect Full-Charge
If the temperature of the battery pack is
higher than the temperature outside of the
cellular phone, CLA detects the battery fully
charged and the state will be converted to the
Trickle Charge.
CLA CURL CABLE CONNECTION
PIN NO(CLC) Description
#1 HHp Power
#2 BATT
#3 Thermistor
#4 C/F
#5 GND
PIN NO(HHP)
12 or 13
16
15
3
2 or 4 or 6
Samsung Electronics