TDA8351/N6,112

Overview

The TDA8351 is a DC-coupled vertical deflection circuit designed for 90° and 110° color deflection systems operating at field frequencies of 50 to 120 Hz. It functions as a highly efficient Class G output bridge, utilizing two supply voltages: VP (9–25 V) for scan voltage and VFB (up to 60 V) for flyback voltage. The device delivers a typical peak-to-peak output current of 3 A with a quiescent supply current of 30 mA. Key features include integrated thermal protection, short-circuit protection for output pins and to VP, and a guard signal output for blanking applications.

Feature Summary

• Highly efficient fully DC-coupled vertical output bridge circuit
• Integrated thermal protection and short-circuit protection for output pins (4 and 7) and to VP
• Guard circuit providing a signal for picture tube screen blanking during flyback or faults
• High EMC immunity due to common mode inputs

Applications

• 90° and 110° color deflection systems
• Vertical deflection circuits for CRT displays
• Field frequencies of 50 to 120 Hz

Procurement Notes

Verify the package type SIL9P (SOT131-2) and mounting method (Through Hole). Confirm that the ordering suffix 112 corresponds to the specific tape and reel or tube configuration required by your assembly process, as datasheet details on packaging quantities are not provided in the source material.

Selection Notes

Select this component for applications requiring a DC-coupled vertical output stage with high efficiency. Ensure the design supports a dual-supply architecture with VP up to 25 V and VFB up to 60 V. Verify that the input driver provides symmetrical current signals compatible with the differential input requirements.

Part Context

The TDA8351 belongs to the Philips/NXP family of specialized ICs for consumer electronics, specifically targeting CRT display vertical deflection. It is often used in conjunction with drivers such as the TDA9150, TDA9151B, TDA9160A, TDA9162, TDA8366, and TDA8376.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.