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TDA4861 Datasheet(PDF) 3 Page - NXP Semiconductors |
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TDA4861 Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 12 page 1997 Jan 20 3 Philips Semiconductors Product specification Vertical deflection power amplifier for monitors TDA4861 BLOCK DIAGRAM Fig.1 Block diagram and application circuit with flyback supply voltage VP3 from an external source. Deflection frequency range from 50 to 100 Hz. Assumed values: Iyoke = 1.42 A. Ryoke = 4.17 Ω +7%+ ∆R(T) = 6.12 Ω. Lyoke = 5.25 mH. R1 = 1.0 Ω±1%. Tamb =65 °C. Tj(max) = 105 °C. Tyoke =75 °C. Pyoke = 1.2 W. PIC = 1.8 W. Ptot = 3.0 W. tpFLB = typically 250 µs. Attention: the heatsink of the IC must be isolated against ground (it is connected to pin 6). handbook, full pagewidth MHA612 yoke 470 µF 0.1 µF 470 µF 470 µF 1 M Ω 150 k Ω 270 Ω 4.3 Ω 10 k Ω 1.8 k Ω BAX13 −8.1 V +52 V R1 1 Ω 1.8 k Ω 5.6 Ω VP2 VP3 8 7 6 5 4 3 2 1 9 PCO RPCO VN VP1 V-OUT SUB FLB DIFFERENTIAL INPUT AMPLIFIER VOLTAGE STABILIZER VERTICAL DRIVER from TDA4850 V-shift +8.8 V VERTICAL OUTPUT TDA4861 THERMAL AND SOAR PROTECTION FLYBACK GENERATOR FLYBACK DRIVER PULSE CIRCUIT |
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