Samsung SCH-1900, Service Manual, Page: 19 / 112

Circuit Description
Samsung Electronics 4-9
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
¶U
Adaptor
directly supplies power in order to operate
cellular phone independent of the battery pack.
¶U
Charger
for the NiMH battery pack
ELECTRICAL SPECIFICATION
¶U
Input Voltage : 11V to 16.5V DC
(normal voltage : 13.5V DC)
¶U
Output 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) 10
ßðæ
1 0
ßÃ
(carrier_on, full_charge)
¶U
Output Voltage (when 2K
•ÿ
is loaded to the
battery charge terminal)
- Battery Charge Terminal : 5.8
°æ
0.5V
- HHP POWER Terminal : 5.8V(+/- 0.3V)
¶U
Ripple & Noise : 50mVp-p
¶U
Normal Fuse Capacity : 250V, 2A
¶U
Charge Time : 3Hrs. at 850mAh6Hrs. at
1500mAh
ENVIRONMENTAL SPECIFICATION
¶U
Temperature
- Operating Temperature : 0
°…
to 50
°…
- Storage Temperature : -20
°…
to 85
°…
¶U
Humidity
- Operating Humidity : 5% to 90%
- Storage Humidity : 5% to 95%
FUNCTIONS OF CLA
¶U
Protection 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.
¶U
Detection 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.
¶U
Detect Carrier-On
In the case of Carrier-On, CLA detects the
resistance of the Cellular Phone and reduces
the charge current.
¶U
Detect 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 PIN NO(HHP)
#1 HHp Power 12 or 13
#2 BATT 16
#3 Thermistor 15
#4 C/F 3
#5 GND 2 or 4 or 6