TDA8433 Integrated Circuit

The TDA8433 is a monolithic Philips (NXP) integrated circuit designed primarily for TV applications, specifically as a vertical deflection circuit and output amplifier for cathode-ray tubes (CRTs).

Here are the main technical specifications and features:

1. Main Function

• Vertical deflection driver and output stage in colour TV receivers and high-performance monitors.

2. Electrical Characteristics (Typical)

• Supply Voltage:
  • Power stage: typically up to +35V or +40V (max).
  • Logic/Control: 12V.
• Output current: Capable of delivering high peak currents (up to approx. 2.0A - 2.5A depending on the heatsink and version) to drive the vertical deflection yoke.
• Operating frequency: Optimised for standard field frequencies (50Hz / 60Hz) and higher frequencies in monitors.

3. Integrated Functions

• Integrated vertical oscillator (voltage or current controlled).
• Thermal protection circuit (Thermal Shutdown).
• Short-circuit protection on the output stage.
• Feedback output for linearity correction.
• Pulse blanking input (where applicable to the configuration).

4. Package

• Usually supplied in a DIL16 package (16-pin Dual In-Line) or plastic power packages with a cooling fin (e.g. SIL or DBS) to facilitate heatsink mounting.

5. Typical Applications

• Traditional cathode-ray tube (CRT) colour TVs.
• Computer or industrial monitors based on CRT technology.

Note: As this is a component related to CRT technology, it is now considered obsolete and is mainly used for repairing vintage equipment.