STV9379 - Vertical Deflection Booster - Power Amplifier, Flyback Generator

Q: What is the primary function of the STV9379 in a TV or monitor?

The STV9379 functions as a vertical deflection booster, providing flyback voltages near 90 V to drive the yoke.

Q: What supply and output current capabilities are stated for the STV9379?

It operates with supplies up to 42 V and delivers up to 2.0 A output peak current to drive the yoke.

Q: What types of application circuits are provided for the STV9379?

The document includes application circuits for both AC coupling and DC coupling, including component guidance such as CF, R5, and Rd ranges.

Oct 12, 2026

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STV9379 is a vertical deflection booster designed for monitors and high-performance TVs, delivering flyback voltages close to 90 V. It operates with supply voltages up to 42 V and provides up to 2.0 A peak output current to drive the yoke, while offering a HEPTAWATT plastic package configuration. The document specifies pin connections, block diagram, absolute maximum ratings, thermal shutdown data, electrical characteristics, application circuits for both AC and DC coupling, and SOA/secondary breakdown derating guidance.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages6

Reading Time15 min

AccessFree to download

Overview

Pin Connections and Block Diagram

Absolute Maximum Ratings

Thermal Data and Protection

Electrical Characteristics

Application Circuits

AC Coupling

DC Coupling

SOA and Secondary Breakdown Figures

Package Mechanical Data

STV9379 VERTICAL DEFLECTION BOOSTER . POWER AMPLIFIER . FLYBACK GENERATOR . THERMAL PROTECTION . OUTPUT CURRENT UP TO 2 .0APP . FLYBACK VOLTAGE UP TO 90V (on Pin 5) . SUITABLE FOR DC COUPLING APPLICATION HEPTAWATT (Plastic Package) DESCRIPTION ORDER CODE : STV9379 Designed for monitorsand high performance TVs, the STV9379 vertical deflection booster delivers flyback voltages close to 90V. TheSTV9379 operateswith suppliesup to 42Vand provides up to 2APP output current to drive the yoke. The STV9379 is offered in HEPTAWATT package. PIN CONNECTIONS 7 Non-inverting Input 6 Output Stage Supply 5 Output 4 GND 3 Flyback Generator 2 Supply Voltage 1 Inverting Input Tab connected to pin 4 August 1998 9379-0 1. EPS 1/5 STV9379 BLOCK DIAGRAM SUPPLY VOLTAGE OUTPUT STAGE SUPPLY FLYBACK GENERATOR 2 6 3 FLYBACK GENERATOR INVERTING INPUT NON-INVERTING INPUT 1 7 POWER AMPLIFIER 5 OUTPUT THERMAL PROTECTION STV9379 4 GROUND OR NEGATIVE SUPPLY 9379-02. EPS ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS Supply Voltage (Pin 2) (see note 1) 50 V V6 Flyback Peak Voltage (Pin 6) (see note 1) 100 V V1 , V7 Amplifier Input Voltage (Pins 1-7) (see note 1) -0.3, + VS V IO Maximum Output Peak Current (see notes 2 and 3) 1.5 A I3 Maximum Sink Current (first part of flyback) (t < 1ms) 1.5 A I3 Maximum Source Current (t < 1ms) 1.5 A VESD ESD susceptibility : EIAJ Norm (200pF discharged through 0Ω) 300 V To per Operating Ambient Temperature -20, + 75 oC Tstg Storage Temperature -40, + 150 oC Tj Junction Temperature +150 oC Notes : 1. Versus Pin 4 . 2. The output current can reach 4A peak for t ≤ 10µs (up to 120Hz) . 3. Provided SOAR is respected (see Figures 1 and 2) . 9379-0 1.TBL THERMAL DATA Symbol Rth (j-c) Tt ∆Tt Tjr Parameter Junction-case Thermal Resistance Temperature for Thermal Shutdown Hysteresis on Tt Recommended Max. Junction Temperature Max. Value 3 150 10 120 Unit oC/W oC oC oC 9379-02 .TBL 2/5 STV9379 ELECTRICAL CHARACTERISTICS (VS = 42V, TA = 25oC, unless otherwise specified) Symbol Parameter VS Operating Supply Voltage Range I2 Pin 2 Quiescent Current I6 Pin 6 Quiescent Current IO Max. Peak Output Current I 1 Amplifier Bias Current I7 Amplifier Bias Current VIO Offset Voltage ∆VIO/dt Offset Drift versus Temperature GV Voltage Gain V5L Output Saturation Voltage to GND (Pin 4) V5H Output Saturation Voltage to Supply (Pin 6) VD5-6 Diode Forward Voltage between Pins 5-6 VD3-2 Diode Forward Voltage between Pins 3-2 V3L Saturation Voltage on Pin 3 V3SH Saturation Voltage to Pin 2 (2nd part of flyback) Test Conditions Versus Pin 4 I3 = 0, I5 = 0 I3 = 0, I5 = 0 V1 = 25V, V7 = 26V V1 = 26V, V7 = 25V I5 = 1A I5 = - 1A I5 = 1A I3 = 1A I3 = 20mA I3 = - 1A Min. 10 5 80 Typ. 10 10 -0.15 -0.15 - 10 1 1.6 1.5 1.5 0.8 2.1 Max. 42 20 30 1 - 1 - 1 7 1.5 2.1 2 2 1.2 2.9 Unit V mA mA A µA µA mV µV/oC dB V V V V V V 9379-03.TBL APPLICATION CIRCUITS AC COUPLING +VS CF 2 6 3 FLYBACK GENERATOR R5 VREF 1 7 POWER AMPLIFIER STV9379 4 THERMAL PROTECTION 5 0.22µ F 1.5Ω Rd (*) Ly Yoke R3 R4 CL (*) Ly 50µs < Rd < R2 R1 Ly 20µs 9379-03 .EPS 3/5 STV9379 APPLICATION CIRCUITS (continued) DC COUPLING +VS CF 2 6 3 VREF+ R5 Vertical Position Adjustment FLYBACK GENERATOR 1 POWER AMPLIFIER 7 THERMAL PROTECTION STV9379 4 -VEE 5 0.22µ F 1.5Ω Rd (*) Ly Yoke (*) Ly 50µs < Rd < R2 R1 Ly 20µs 9379-04 . EPS Figure 1 : Output Transistors SOA (for secondary breakdown) 10 1 10 10 IC (A) @ T case = 25°C -1 -2 t = 1ms t = 10ms t = 100ms VCE (V) 1 10 10 2 9379-05. EPS Figure 2 : SecondaryBreakdown Temperature Derating Curve (

FAQs

What is the primary function of the STV9379 in a TV or monitor?

The STV9379 functions as a vertical deflection booster, providing flyback voltages near 90 V to drive the yoke.

What supply and output current capabilities are stated for the STV9379?

It operates with supplies up to 42 V and delivers up to 2.0 A output peak current to drive the yoke.

What types of application circuits are provided for the STV9379?

The document includes application circuits for both AC coupling and DC coupling, including component guidance such as CF, R5, and Rd ranges.

Oct 12, 2026

Upload by วิน