SHARP 32JW73H
Manual de Servicio

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+VCC

100nF

100nF

1000µF

15

+VCC

-VCC

16

+VCC power TDA9380 STV9380

VREG -VCC 100nF 8
Vref

Flyback detection

Flyback generator

5 CFLY+ CFLYBACK 100µF 6 CFLYBOOT

IN+ 13 1k� Input signal IN 12 EA out 14 10k� 1k� SGND 11 FEEDCAP 4.7nF 9 Pins 1,2,3,18,19,20 10 470pF 10k� 100nF FREQ -VCC 17 + _ Modulator Output drive

7 4 OUT 150�

Cboot 220nF 1mH 470nF 150� Deflect. Yoke* 200�

560pF -VCC power 1000µF Sense resistor 0.5�

-VCC * Deflection yoke characteristics: R = 5.5�, L = 7mH fvert = 50Hz

5

ELECTRICAL CHARACTERISTICS (refer to Figure 1 on page 3)

Tamb = 25°C unless otherwise specified, Vcc = ±12V, fvert=50Hz
Symbol +Vcc -Vcc �Vcc Vccstart Iq Iy I13, I12 VOS SVR Flythr Fly thf Pd Fsw Fsw - op Rfreq Parameter Positive supply range Negative supply range Maximum recommended difference between +Vcc and � Vcc Low Vcc detection Quiescent supply current Maximum recommended vertical yoke current Amplifier Input bias current Output Offset voltage Supply voltage rejection Flyback detection threshold (positive slope) Flyback detection threshold (negative slope) Test Conditions Min. +10 -18 Typ. Max. +18 -10 ±4 ±6.5 Input voltage = 0 14 ±1.25 -0.1 Note 1 Note 2 V(14) V(14) -50 82 1.5 0.5 1.1 120 100 7 140 10 160 200 14 +50 Units V V V V mA A
Figure 1. Test and Application Circuit

µA
mV dB V V W kHz kHz k�

Integrated circuit Note 3 Dissipated power Switching frequency R freq = 10k� Switching frequency operative range Frequency controller resistor range Pin 10

Note: 1 Note: 2 Note: 3

Input voltage = 0, measured after the filter (e.g. accross the 470 nF filter capacitor) Supply rejection of the positive or negative power supply. Vcc ripple =1Vpp, f=100Hz, measured on the sense resistor. Power dissipated in the circuit in the case of the application from Figure 1 and the current in the deflection yoke adjusted to 2.5App. The corresponding power dissipated in the vertical deflection yoke is 2.8W.

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