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| UTC1031 TV VERTICAL DEFLECTION SYSTEM DESCRIPTION LI NEAR I NTEGRATED CI RCUI T The UTC1031 is a monolithic integrated circuit designed for use in the vertical deflection circuit of monochrome and small color television receivers. It oscillates vertical synchronizing with the vertical synchronization signal and outputs the vertical deflection current with a single chip. FUNCTIONS *Vertical synchronization circuit *Vertical oscillation circuit *Vertical saw-tooth shape *Vertical output circuit *Clamping circuit for blanking pulse *Temperature compensating circuit SIP-10H FEATURES *Less number of external components *Wide operating voltage *Freely adjustable pull-in range *Large output current-capacity *Built-in adjusting circuit for fly back time. TYPICAL APPLICATION CIRCUIT Vcc 9-18V C12 100F/25V VR1 50kB VCC 2 47F/10V R3 20k 9 Deflection Coil 6 w C4 1F/25V Tantalum w R1 R2 C3 10F/10V SYNC & OSC 5 SAWTOOTH Power Amp. C8 2200F 1 47F 10V w Composite synchronization C1 C2 R4 2.7k 3 .D 8 4 7 Tantalum C7 22F/10V at aS C5 10F/10V R5 5.6k VR2 20KB C6 22F/10V R6 82 VR3 2KB V. Size Tantalum hYOUW ANG ELECTRONICS CO.LTD ee t4 U .c om 1 www..com Clamping circuit for blanking pulse 10 C10 R7 0.5~3 1W UTC1031 Characteristic Supply Voltage Output Current Operating Temperature Storage Temperature Power dissipation (Ta=75,with aluminum heat sink) Power dissipation (Ta=75,with aluminum heat sink) LI NEAR I NTEGRATED CI RCUI T Symbol Vcc Ip-p Topr Tstg PD1 PD2 ABSOLUTE MAXIMUM RATINGS(Ta=25C ) Value 20 2 -20 to +70 -40 to 125 1.5 600 Unit V Ap-p C C mW mW ELECTRICAL CHARACTERISTICS (Ta=25C,Vcc=12V,unless otherwise specified) Characteristic Quiescent circuit current Output Terminal Voltage Vertical Oscillation Frequency Symbol ICCQ Vo Fv Test Condition Vi=0,no load Vi=0,no load Synchronization signal Voltage Applied at Terminal 5 is 1.3Vp-p C4= 1F(Tantalum) Rosc=38.1k With specified integration circuit, applied voltage of synchronization signal is 1.3Vp-p at Terminal 5 Frequency drift from standard frequency(fvo=60hz at Vcc=12V) Vs Power supply voltage (Vcc=122V) Deviation from the range for pull in (at Vcc=12V) Vs power supply voltage(Vcc=122V) Output current=0.7A C4= 1F(Tantalum) Rosc=38.1k Min 15 5.6 Typ. 30 6.0 50/60 Max 46 6.4 114 Unit mA V Hz Free-Running Frequency Pull-in Range Fvo F(pull) 53 -10 60 -12 67 Hz Hz Drift of free-running frequency vs Power Supply voltage Fvo 1.0 Hz Deviation of Pull-in Range vs power supply voltage Output Saturation Voltage Output Pulse width of Terminal 4 F(pull) Vcc Vsat To 3.0 Hz 300 1.3 420 1.6 600 V S YOUW ANG ELECTRONI CO. CS LTD 2 UTC1031 TEST CIRCUIT LI NEAR I NTEGRATED CI RCUI T DC Current Meter A 2 1 SW1 3 Vcc 39k 38.1k 100F 3.3k 0.047F 0.5 To Oscilloscope VR1 20k 12 3 100F 2 1F Tantalum To Fig.3 A SW4 10 9 3 47F DY:2.7 L:5.3mH 2200F 6 UTC1031 5 2.7k 1 SW5 To Oscilloscope and Digital voltage meter 4.7F 8 4 4.7F Tant 1 2 7 0.01F 22F 10F 3.6k 2.7k 8.2k To Frequency Meter 4.7k 3 VR3 50K SW2 1 2 3 VR2 50K To Frequency Meter Fig.2 Vcc:12V 20k 10k 100F Adjusting variable resistor for vertical synchonization level 1.5k 3.3F SA733 SC945 3.9k 5.6k 3.9k 0.047F 0.047F 3.9k A 1.3Vp-p Vertical synchronization signal Fig. 3 YOUW ANG ELECTRONI CO. CS LTD 3 |
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