Sharp LC-46XD1E/RU Service Manual page 68

LC-46/52XD1E-RU
11. IC301/302: VHITDA8931T-1
SOUND AMP
Pin No. Pin Name
1 VSSD
2 VSSA
3 INN
4 INP
5 VDDA
6 POWERUP
7 ENABLE
8 DIAG
9 CGND
10 VSSD
11 VSSD
12 OVP
13 HVP
14 STABI
15 VSSP
16 OUT
17 BOOT
18 VDDP
19 HVPI
20 VSSD
12. IC705: VHIRM4020++-1
Switching Regurator
Pin No. Pin Name
1 Z/C
2 F/B
3 GND
4 VCC
5 Emitter/OCL
7 VIN
8 Collector
13. IC704: VHIRM4040++-1
Switching Regurator
Pin No. Pin Name
1 Z/C
2 F/B
3 GND
4 VCC
5 Emitter/OCL
7 VIN
8 Collector
14. IC701: VHIFA5501AN-1Y
POWER FACTOR CONTROL
Pin No. Pin Name
1 FB
2 COMP
3 MUL
4 IS
5 ZCD
6 GND
7 OUT
8 VCC
I/O
- negative digital supply voltage; heat spreader
- Negative analogue supply voltage.
I inverting input.
I non inverting input.
- positive analog supply voltage.
I power-up input.
I enable input.
O diagnostic output.
- control ground; reference ground for pins POWERUP, ENABLE and DIAG.
- negative digital supply voltage; heat spreader.
- negative digital supply voltage; heat spreader.
I overvoltage protection reference input.
O half supply voltage output for charging SE capacitor.
I decoupling of internal stabilizer.
- negative power supply voltage.
O PWM output.
I bootstrap capacitor connection.
- positive power supply voltage.
I half supply voltage output for reference voltage of input circuitry.
- negative digital supply voltage; heat spreader.
I/O
I Zero Current Detection Terminal.
I Feed Back Terminal.
- Ground Terminal.
- VCC Terminal.
O Emitter/OCL Terminal.
I VIN Terminal.
I Collector Terminal.
I/O
I Zero Current Detection Terminal.
I Feed Back Terminal.
- Ground Terminal.
- VCC Terminal.
O Emitter/OCL Terminal.
I VIN Terminal.
I Collector Terminal.
I/O
I Input terminal of converter out put valtage.
O Output terminal of error margin amplifier.
I Input termianl of sine wave AC power wave form.
I Input terminal to detect current of MOSFET.
I Input termial to detect current of inductor returning to 0.
- Power supply ground terminal.
O Output terminal to drive MOS FET directry.
- Power supply input terminal to operate IC.
Pin Function
Pin Function
Pin Function
Pin Function
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