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TCA785 Datasheet(PDF) 5 Page - Siemens Semiconductor Group |
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TCA785 Datasheet(HTML) 5 Page - Siemens Semiconductor Group |
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5 / 16 page  Semiconductor Group 5 TCA 785 Characteristics (cont’d) 8 ≤ VS ≤ 18 V; – 25 ˚C ≤ TA ≤ 85 ˚C; f = 50 Hz Unit Parameter Symbol min. max. Limit Values Test Circuit typ. µA V mV k Ω µs Ramp generator Charge current Max. ramp voltage Saturation voltage at capacitor Ramp resistance Sawtooth return time I10 V10 V10 R9 tf 10 100 3 1 1.6 1 1 225 80 1000 V2 – 2 350 300 V V µs µA µA Inhibit pin 6 switch-over of pin 7 Outputs disabled Outputs enabled Signal transition time Input current V6 = 8 V Input current V6 = 1.7 V V6 L V6 H tr I6 H – I6L 4 1 80 1 1 1 1 1 3.3 3.3 500 150 2.5 5 800 200 V V µA µA Long pulse switch-over pin 13 switch-over of S8 Short pulse at output Long pulse at output Input current V13 = 8 V Input current V13 = 1.7 V V13 H V13 L I13 H – I13 L 3.5 45 1 1 1 1 2.5 2.5 65 2 10 100 % % % Deviation of I10 R 9 = const. VS = 12 V; C10 = 47 nF Deviation of I10 R 9 = const. VS = 8 V to 18 V Deviation of the ramp voltage between 2 following half-waves, VS = const. I10 I10 ∆V10 max – 5 – 20 1 1 ± 1 5 20 µA V Outputs pin 2, 3, 4, 7 Reverse current VQ = VS Saturation voltage IQ = 2 mA ICEO Vsat 0.1 2.6 2.6 0.4 10 2 |
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