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UC3843AN Datasheet(PDF) 6 Page - ON Semiconductor |
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UC3843AN Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 18 page UC3842A, UC3843A, UC2842A, UC2843A http://onsemi.com 6 Figure 8. Error Amp Open Loop Gain and Phase versus Frequency Figure 9. Current Sense Input Threshold versus Error Amp Output Voltage Figure 10. Reference Voltage Change versus Source Current Figure 11. Reference Short Circuit Current versus Temperature Figure 12. Reference Load Regulation Figure 13. Reference Line Regulation 2.0 ms/DIV 2.0 ms/DIV VCC = 12 V to 25 V TA = 25°C 0 20 40 60 80 100 120 Iref, REFERENCE SOURCE CURRENT (mA) VCC = 15 V TA = 55°C TA = 125°C −55 −25 0 25 50 75 100 125 TA, AMBIENT TEMPERATURE (°C) VCC = 15 V RL ≤ 0.1 W VCC = 15 V IO = 1.0 mA to 20 mA TA = 25°C 0 −4.0 −8.0 −12 −16 −20 −24 110 90 70 50 TA = 25°C −20 10 M 10 f, FREQUENCY (Hz) Gain Phase VCC = 15 V VO = 2.0 V to 4.0 V RL = 100 K TA = 25°C 0 30 60 90 120 150 180 100 1.0 k 10 k 100 k 1.0 M 0 20 40 60 80 100 0 VO, ERROR AMP OUTPUT VOLTAGE (V) 0 0.2 0.4 0.6 0.8 1.0 1.2 2.0 4.0 6.0 8.0 VCC = 15 V TA = 25°C TA = −55°C TA = 125°C |
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