TDA3653B/N2,112

Overview

The TDA3653B/N2,112 is a vertical deflection and guard circuit designed for driving various deflection systems with peak-to-peak currents up to 1.5 A. It integrates a driver, output stage, thermal protection, flyback generator, voltage stabilizer, and guard circuit within a 9-lead SIL plastic package (SOT110B). The supply voltage range spans 10 V to 40 V, while the maximum supply voltage at pin 6 and peak output voltage during flyback are limited to 60 V. The device operates within a junction temperature range of -25 °C to +150 °C.

Feature Summary

• Integrated vertical deflection output circuit capable of delivering 1.5 A peak-to-peak current.
• Built-in thermal protection and output stage protection circuits.
• Internal flyback generator and voltage stabilizer for stable operation.
• Guard circuit prevents screen damage by blanking the picture tube when deflection current is absent.

Applications

• Vertical deflection output circuits in color television sets.
• 90-degree vertical deflection systems for CRT displays.
• TV equipment requiring integrated vertical scanning drive and protection.

Procurement Notes

Verify component authenticity as this part number represents a legacy Philips product now under NXP USA Inc. The datasheet indicates the product status may be discontinued or obsolete; confirm availability through authorized distributors. Ensure the 9-SIL MPF package matches the design requirements for through-hole mounting on printed-circuit boards.

Selection Notes

Select the TDA3653B/N2,112 for applications requiring a single-chip solution for vertical deflection drive up to 1.5 A. Ensure the supply voltage remains within 10 V to 40 V and that the flyback voltage at pin 5 does not exceed 60 V. Consider the thermal resistance of 10 K/W (junction to mounting base) for heat dissipation planning in the SOT110B package.

Part Context

The TDA3653B is part of the TDA3653 family, which includes the TDA3653C variant. While the TDA3653B uses the 9-lead SIL plastic package (SOT110B), the TDA3653C utilizes a different 9-lead SIL plastic power package (SOT131). Both serve similar vertical deflection functions but differ in physical packaging and thermal characteristics.

Replacement Considerations

The TDA3653C is a functional alternative within the same family, distinguished primarily by its SOT131 package instead of SOT110B. Verify pin compatibility and thermal performance differences before substitution. No other direct cross-model replacements are documented in the provided specifications.