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TL494 Datasheet(PDF) 4 Page - HTC Korea TAEJIN Technology Co. |
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TL494 Datasheet(HTML) 4 Page - HTC Korea TAEJIN Technology Co. |
4 / 6 page Pulse-Width-Modulation Control Circuits TL494 ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE RECOMMENDED OPERATING CONDITIONS Electrical characteristics over recommended operatng free-air temperature range, Vcc=15V, f= 10 kHz(unless otherwise noted). Oscillator section (See Figure 1) HTC 148 0.47 10000 Timing resistor, RT 1.8 500 Operating free-air temperature, T A Rating Value Unit 41 41 250 0 to 70 mA V oC -65 to 150 Amplifier input voltage, Vi 260 Supply voltage, Vcc Amplifier input voltage Collector output voltage Collector output current Operating free-air temperature range Storage temperature range Lead temperature 1,6 mm from case for 10 seconds Vcc +0.3 Collector output voltage, Vo Collector output current (each transistor) Current into feedback terminal Timing capacitor, CT Parameter MIN MAX 740 Value Supply voltage, Vcc 0.3 -0.3 Vcc -2 40 Oscillator frequency 1 300 KHz 070 oC Unit V mA KΩ nF 200 Value MIN TYP** MAX V % mV Unit mA 4.75 5 5.25 225 115 0.2 1 35 Parameter Test Conditions* Output voltage (Vref) Input regulation Output regulation Output voltage change with temperature Short-circuit output current*** lo = 1mA Vcc = 7V to 40 V Io = 1mA to 10mA TA = MIN to MAX Vref = 0 Unit MIN TYP** MAX KHz All values of Vcc, C T,RT, 10 % 0.1 Vcc=7V to 40V, TA=25oC 1 10 Frequency CT=0.01μF, RT=12KΩ Parameter Test Conditions* Value CT=0.01μF, RT=12KΩ, Standard deviation of frequency**** TA = MIN to MAX Frequency change with voltage Mar. 2006-Rev06 Frequency change with temperature**** and TA constant |
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