NCP1729_06 ONSEMI [ON Semiconductor], NCP1729_06 Datasheet
NCP1729_06
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NCP1729_06 Summary of contents
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NCP1729 Switched Capacitor Voltage Inverter The NCP1729 is a CMOS charge pump voltage inverter that is designed for operation over an input voltage range of 1. 5.5 V with an output current capability in excess of 50 mA. ...
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MAXIMUM RATINGS* Rating Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Input Voltage Range (V to GND) in Á Á Á Á Á Á Á Á Á Á Á Á ...
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Figure 14 Test Setup T = 25° 1.0 1.5 2.0 2.5 3.0 3 SUPPLY VOLTAGE (V) in Figure 2. Output Resistance vs. Supply Voltage ...
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Figure 14 Test Setup 2 −1.0 in −2 3 −3 5 −4.0 −5.0 −6 OUTPUT CURRENT (mA) out Figure 8. ...
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OSC 3 Figure 14. Test Setup/Voltage Inverter DETAILED OPERATING DESCRIPTION The NCP1729 charge pump converter inverts the voltage applied ...
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Capacitor Selection In order to maintain the lowest output resistance and output ripple voltage recommended that low ESR capacitors be used. Additionally, larger values of C lower the output resistance and larger values of C reduce output voltage ...
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The NCP1729 primary function is a voltage inverter. The device will convert 5.0 V into −5.0 V with light loads. Two capacitors are required for the inverter to function. A third capacitor, the input bypass capacitor, may be required ...
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Figure 20. Cascaded Devices for Increased Negative Output Voltage Two or more devices can be cascaded for increased output voltage. Under light load conditions, the output voltage is approximately equal to −V times the number of ...
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single device can be used to construct a negative voltage doubler. The output voltage is approximately equal to −2.0 V minus the forward voltage drop of each external diode. The performance characteristics for the above converter ...
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Capacitors = 3 single device can be used to construct a negative voltage tripler. The output voltage is approximately equal to −3.0 V minus the forward voltage drop of each external diode. ...
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single device can be used to construct a positive voltage doubler. The output voltage is approximately equal to 2.0 V minus the forward voltage drop of each external diode. The performance characteristics for the above converter ...
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Capacitors = 3 single device can be used to construct a positive voltage tripler. The output voltage is approximately equal to 3.0 V the forward voltage drop of each external diode. The performance characteristics for ...
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Figure 30. Load Regulated Negative Output Voltage A zener diode can be used with the shutdown input to provide closed loop regulation performance. This significantly reduces the converter’s output resistance and dramatically enhances the load regulation. For ...
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Figure 32. Line and Load Regulated Negative Output Voltage An adjustable shunt regulator can be used with the shutdown input to give excellent closed loop regulation performance. The shunt regulator acts as a comparator with a precise ...
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Figure 35. Paralleling Devices for Increased Negative Output Current An increase in converter output current capability with a reduction in output resistance can be obtained by paralleling two or more devices. The output current ...
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− out Figure 37. External Switch for Increased Negative Output Current The output current capability of the NCP1729 can be extended beyond 600 mA with the addition of two external switch transistors and ...
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Figure 39. Line and Load Regulated Negative Output Voltage with High Current Capability This converter is a combination of Figures 37 and 32. It provides a line and load regulated output of −2. ...
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Figure 42. Positive Output Voltage Doubler with High Current Capability The NCP1729 can be configured to produce a positive output voltage doubler with current capability of 500 mA. This is accomplished with ...
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Figure 44. Line and Load Regulated Positive Output Voltage Doubler with High Current Capability This converter is a combination of Figures 42 and the shunt regulator to close the loop. In this ...
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single device can be used to split a negative input voltage. The output voltage is approximately equal to −V performance characteristics are shown below. Note that the converter has an output resistance −1.5 −1.7 ...
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Figure 49. Combination of a Closed Loop Negative Inverter with a Positive Output Voltage Doubler All of the previously shown converter circuits have only single outputs. Applications requiring multiple outputs can be constructed by ...
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0.05 (0.002) H 1.9 0.075 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and ...