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ADP3191JRQZ-RL Datasheet(PDF) 7 Page - Analog Devices |
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ADP3191JRQZ-RL Datasheet(HTML) 7 Page - Analog Devices |
7 / 28 page ADP3191 Rev. 0 | Page 7 of 28 TYPICAL PERFORMANCE CHARACTERISTICS AND TEST CIRCUITS 2.8 0 RT (kΩ) 0 50 100 150 200 250 300 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 Figure 3. Master Clock Frequency vs. RT 250kΩ 1.25V 1 µF 100nF 100nF ADP3191 ADP3191A VID4 VID3 VID2 VID1 VID0 VID5 FBRTN FB COMP PWRGD EN DELAY RT RAMPADJ VCC PWM1 PWM2 PWM3 PWM4 SW1 SW2 SW3 SW4 GND CSCOMP CSSUM CSREF ILIMIT 1 2 3 28 27 26 4 8 10 12 14 5 6 7 21 24 23 22 9 11 17 18 19 13 15 16 20 25 6-BIT CODE 250kΩ 20kΩ 1kΩ 12nF 12V + 240Ω 5V ADP3191A ADP3191 Figure 4. Closed-Loop Output Voltage Accuracy CSSUM CSCOMP VCC CSREF GND 39kΩ 100nF 1kΩ 1.0V ADP3191 VOS = CSCOMP – 1V 40 12V 300Ω 18 17 28 16 19 Figure 5. Current Sense Amplifier VOS CSSUM 18 CSCOMP 17 28 VCC CSREF 16 GND 19 200kΩ 100nF 1.0V ADP3191/ADP3191A ΔV 12V 240Ω 5V ADP3191A ADP3191 200kΩ ΔVFB = FBΔV = 80mV – FBΔV = 0mV Figure 6. Positioning Voltage |
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