Zener Diode Voltage Regulator

The figure below show us a zener regulator. The essential component is the dropping resistor R which the value given by (V-Vo)/I, where I is the desired output plus 10%. As long as the supply voltage V is constant, the current in thner current drops to zero, and we is resistor is constant and is shared between the Zener and […]

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1.5V Micropower CMOS Voltage Regulator

The LP3992 is Micropower CMOS Voltage Regulator with input range of 1.9 to 5.2V and can produce 1.5V output. This regulator suits for application that need an accurate output voltage with power from battery, low quiescent current, low noise and portable. The accurateness  of this regulator is 1.5 ± 0.009V and this device has output current of 30mA. The LP3992 […]

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Digitally Controlled Negative Voltage Supply

Despite the popularity of single-supply ICs, a negative control voltage is still required by some applications. Modern, inverted R-2R ladder DAC and op amp is the solution for this purpose. This approach offers lower supply voltages, higher speed, and smaller packages when compared with older DACs containing standard R-2R ladders. An output swing from 0V to 2.5V is produced by […]

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