Automotive Voltage Regulator with Keep Alive Control

The LM9070 is a 5V, 3% accurate voltage regulator which have 250mA low-dropout. The regulator has an active low delayed reset output flag feature. This feature can be used to reset microprocessor system on turn-ON and in the event that the regulator output falls out of regulation for any season. Before the reset output can return high, an external capacitor […]

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ADP1821 Step Down DC-to-DC Converter

This is a ADP1821 Step Down DC-to-DC Converter circuit. This circuit uses ADP1821 that is synchronous pulse-width-modulated (PWM), step-down controller, inexpensive and versatile. It can drive all N-channel power stage to regulate an output voltage as low as 0.6 V. The output voltages that can be provided by this circuit is from 0.6 V to 85% of the input voltage. […]

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Stable 5v from Old Cells

The benefit of stepping down the voltage of the battery is that we can give a constant/stable performance for our devices until the battery runs out the power. That’s only one example of voltage regulation, actually there can be more advantage depends on your need. Here is one example of voltage regulator circuit constructed from discrete components: This is a […]

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Discrete Voltage Regulator

It is still possible to build circuits without IC’s and still achieve a high level of performance while integrated circuits have become a staple of all modern circuit designs. A high performance 5 volt voltage regulator built using discrete components that are readily available is shown on circuit diagram below. This circuit not need an IC and only need to […]

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