Professional IC Distribution & Technical Solutions

The TDA4859 is a deflection controller IC manufactured by NXP Semiconductors (formerly Philips Semiconductors).

Specifications:

• Function: Monolithic integrated circuit for horizontal and vertical deflection control in multi-sync monitors.
• Supply Voltage (VCC): Typically 12V (operating range: 10.8V to 13.2V).
• Horizontal Section:
• Horizontal sync processing (frequency range: 15–150kHz).
• Phase detector for horizontal drive.
• Soft start/stop for horizontal output.
• X-ray protection.
• Vertical Section:
• Vertical sync processing (frequency range: 50–160Hz).
• Vertical ramp generator.
• Vertical drive output.
• Protection Features:
• X-ray protection.
• Under-voltage lockout (UVLO).
• Package: 32-pin DIP (Dual In-line Package) or PLCC (Plastic Leaded Chip Carrier).

Descriptions:

The TDA4859 is designed for use in multi-frequency CRT monitors, providing horizontal and vertical deflection control. It supports a wide range of sync frequencies, making it suitable for VGA, SVGA, and other multi-sync applications.

Features:

• Wide horizontal and vertical sync frequency ranges.
• Automatic sync polarity detection.
• Adjustable horizontal and vertical drive signals.
• Built-in protection circuits (X-ray, under-voltage).
• Low power consumption.
• Compatible with various monitor designs.

This IC was commonly used in CRT monitors from the 1990s and early 2000s.