Datenblatt-Suchmaschine für elektronische Bauteile |
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TDA4718A Datenblatt(PDF) 5 Page - Siemens Semiconductor Group |
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TDA4718A Datenblatt(HTML) 5 Page - Siemens Semiconductor Group |
5 / 21 page TDA 4700 TDA 4718 Semiconductor Group 5 Pin Definitions and Functions (TDA 4718) Circuit Description Voltage Controlled Oscillator (VCO) The VCO generates a sawtooth voltage. The duration of the falling edge is determined by the value of C T. The duration of the rising edge of the waveform and, therefore, approximately the frequency, is determined by the value of R T. By varying the voltage at C filter, the oscillator frequency can be changed by its rated value. During the fall time, the VCO provides a trigger signal for the ramp generator, as well as an L signal for a number of IC parts to be controlled. Pin Symbol Function 1 GND Ground 0 V 2 3 R R C R Ramp generator R R Ramp generator C R 4 5 I COMP I SYNC + Input comparator K2 Sync. input 6 7 IUV IOV Input undervoltage, ON/OFF Input overvoltage 8 9 – I DYN + I DYN Input dynamic current limitation (–) Input dynamic current limitation (+) 10 11 + V REF + V S Reference voltage Supply voltage 12 13 Q 2 Q 1 Output Q2 Output Q1 14 15 Q SYNC C soft start Sync. output Soft start 16 17 18 R T C filter C T VCO R T Capacitance VCO C T |
Ähnliche Teilenummer - TDA4718A |
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Ähnliche Beschreibung - TDA4718A |
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