TDA4864AJ Power Mosfet Transistor Vertical deflection booster

TDA4864J; TDA4864AJ

Vertical deflection booster

FEATURES

• Power amplifier with differential inputs

• Output current up to 2.5 A (p-p)

• High vertical deflection frequency up to 200 Hz

• High linear sawtooth signal amplification

• Flyback generator:

  – TDA4864J: separate adjustable flyback supply voltage up to 60 V

  – TDA4864AJ: internally doubled supply voltage (two supply voltages only for DC-coupled outputs).

GENERAL DESCRIPTION

The TDA4864J and TDA4864AJ are deflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz.

The TDA4864J needs a separate flyback supply voltage, so the supply voltages are independently adjustable to optimize power consumption and flyback time.

For the TDA4864AJ the flyback supply voltage will be generated internally by doubling the supply voltage and therefore a separate flyback supply voltage is not needed.

Both circuits provide differential input stages.

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134); voltages referenced to pin GND; unless otherwise specified.

Notes

1. Internally limited by thermal protection; will be activated for Tj ≥ 150 °C.

2. Equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor.

BLOCK DIAGRAM

Fig.1 Block diagram of TDA4864J.

Fig.2 Block diagram of TDA4864AJ.

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