JVC KD-SC900R SERVICE MANUAL
4.2 AN80T07 (IC901) : Regulator
• Block diagram
*ASO, Peak Current Protection.
*Thermal Protection (Except
VDD, Comp output).
Outputs
MODE1
6
Reference Voltage
ACC
3
KD-SC900R
NC
5
Pre
Drive
15 11 1 4 8 9 10 7 12 2 16
14
ILM
10V
MODE2 SW5V
ILM
AJ
Out
Pre
Drive
VDD
5.7V
EXT
Out
ANT
Out
EXT Vcc ANT CD
Pre
Drive
13
BATT.DET COMP GND
8.0V
AUDIO
9.0V
• Pin function
Pin No. Symbol Function
1 SW5V Output When Mode 1 pin is "M", "H" SW output is VDD -0.7V (Io=100mA min).
2 COMP Output When ACC input pin is "H" COMP Output is VDD -0.7V (Io=100mA min).
3 ACC Input L: COMP Output OFF and H: COMP Output ON
4 VDD Output 5.7V Output voltage for a microcontroller (Io=100mA min).
5NC NC pin
6 MODE1 3 Input "L", "M", "H" control pin
7 CD Output When Mode 1 pin is "H" CD output is 8V (Io=1200mA min).
8 EXT Output When Mode 1 pin is "M", "H" EXT output is Vcc-1.0V (Io=300mA min).
9 VCC Connected to car BACKUP Power supply.
10 ANT Output When Mode 2 pin is "H" ANT output is Vcc-1.0V (Io=300mA).
11 MODE2 L: ANT Output OFF and H: ANT Output ON
12 BATT.DET NPN Transistor open collector Output (When battery is lower then 9V "L")
13 Audio Output When Mode 1 pin is "M", "H" Audio output is 9V (Io=500mA min).
14 ILM AJ ILM (Illumination) Output adjustable pin.
15 ILM(Illumination) Output When Mode 1 pin is "M", "H" ILM output is 10V (Io=300mA min).
16 GND Connected to the IC substrate.
Pre
Drive
(No.49829)1-29
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