AN5522

TDA8172 TV VERTICAL DEFLECTION OUTPUT CIRCUIT FEATURES s Power Amplifier s Flyback Generator s Thermal Protection DESCRIPTION The TDA8172 is a monolithic integrated circuit in HeptawattTM package. It is a high efficiency power booster for direct driving of vertical windings of TV yokes. It is intended for use in color and black & white television as well as in monitors and displays. PIN CONNECTION (top view) HEPTAWATT (Plastic Package) ORDER CODE: TDA8172 BLOCK DIAGRAM October 2003 1/7 1 TDA8172 1 ABSOLUTE MAXIMUM RATINGS Symbol VS V5, V6 V3 V1, V7 I0 I0 I0 I3 I3 I3 Ptot Tstg, Tj Parameter Supply Voltage (pin 2) Flyback Peak Voltage Voltage at Pin 3 (see Note 1) Amplifier Input Voltage Output Peak Current (non repetitive, t = 2ms) Output Peak Current at f = 50 to 200 Hz, t ≤ 10µs Output Peak Current at f = 50 to 200 Hz, t > 10µs Pin 3 DC Current at V5 < V2 Pin 3 Flyback Current at f = 50 to 200 Hz, tfly ≤ 1.5ms Pin 3 Sink Current at f = 50 to 200 Hz, t ≤ 10µs Total Power Dissipation at Tcase = 90 °C Storage and Junction Temperature Note 1:This occurs during the first part of flyback pulse Value 35 60 VS + 3 VS - 0.5 2.5 ±5 2 100 ±1.5 5 20 -40, +150 Unit V V V V A A A mA A A W °C 2 THERMAL DATA Symbol Rth(j-c) Parameter Thermal Resistance Junction-case Value 3 Unit °C/W 3 ELECTRICAL CHARACTERISTICS (refer to the test circuits, VS = 35V, Tamb = 25°C unless otherwise specified) Symbol Parameter Test Conditions I2 Pin 2 Quiescent Current I6 Pin 6 Quiescent ...