NTE1788 Integrated Circuit TV Vertical Deflection Output Circuit Description: The NTE1788 is a monolithic integrated circuit in 7−Lead Staggared SIP type package and is designed for use as a high efficiency power booster for direct driving of vertical windings of TV yokes. It is intended for use in color and B & W television as well as in monitors and displays. Features: D Power Amplifier D Flyback Generator D Thermal Protection Absolute Maximum Ratings: Supply Voltage (Pin2), VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Flyback Peak Voltage, V5, V6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V Voltage at Pin3, V3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +VS Amplifier Input Voltage, V1, V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +VS Output Peak Current, IO (Non Repetitive, t = 2ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5A to +2.5A (f = 50 or 60Hz, t ≤ 10µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3A (f = 50 or 60Hz, t > 10µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2A Pin3 DC Current (V5 < V2), I3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA Pin3 Peak to Peak Flyback Current (f = 50 or 60Hz, tfly ≤ 1.5ms), I3 . . . . . . . . . . . . . . . . . . . . . . . . 3A Total Power Dissipation (TC = +90°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20W Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to 150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to 150°C Thermal Resistance, Junction to Case, RΘJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3°C/W Electrical Characteristics: (VS = 35V, TA = +25°C unless otherwise specified) Parameter Symbol Quiescent Current Amplifier Input Bias Current Test Conditions Min Typ Max Unit I2 I3 = 0, I5 = 0 − 8 16 mA I6 I3 = 0, I5 = 0 − 16 36 mA I1 V1 = 1V, V7 = 2V − −0.1 −1.0 µA V1 = 2V, V7 = 1V − −0.1 −1.0 µA Pin3 Saturation Voltage to GND V3L I3 = 20mA − 1.0 1.5 V Quiescent Output Voltage V5 V5 = 35V, Ra = 39kΩ − 18 − V Output Saturation Voltage to GND V5L I5 = 1.2A − 1.0 1.4 V I5 = 0.7A − 0.7 1.0 V −I5 = 1.2A − 1.6 2.2 V −I5 = 0.7A − 1.3 1.8 V − 140 − °C Output Saturation Voltage to Supply V5H Junction Temperature for Thermal Shut Down Tj Pin Connection Diagram (Front View) 7 Non−Inverting Input 6 Output Stage Supply 5 Output 4 GND/Tab 3 Flyback Generator 2 VCC 1 Inverting Input .189 (4.8) .410 (10.42) .054 (1.38) .237 (6.0) .622 (15.8) .152 (3.93) Dia 1 .666 (16.9) 7 .890 (22.6) .300(7.62)