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UC3842BVDR2 데이터시트(PDF) 7 Page - ON Semiconductor |
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UC3842BVDR2 데이터시트(HTML) 7 Page - ON Semiconductor |
7 / 21 page UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV http://onsemi.com 7 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 −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 VCC = 15 V TA = −55°C TA = 25°C −16 0 Iref, REFERENCE SOURCE CURRENT (mA) 20 40 60 80 100 120 −12 −8.0 −4.0 0 −20 −24 TA = 125°C VCC = 15 V RL ≤ 0.1 W 50 −55 TA, AMBIENT TEMPERATURE (°C) −25 0 25 50 75 100 125 70 90 110 Figure 12. Reference Load Regulation Figure 13. Reference Line Regulation 2.0 ms/DIV 2.0 ms/DIV VCC = 15 V IO = 1.0 mA to 20 mA TA = 25°C VCC = 12 V to 25 TA = 25°C |
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