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Why do you need a LM317 voltage regulator?
Most people will use LM317 because of high-efficiency, easy to apply and cheaper. Description. It has an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2V to 37V range.
What does dropout voltage on LM317 mean?
This means that an LM317 voltage regulator cannot be used to provide a 12.0 Volt output from a 12V rated supply. Dropout voltage- It is the minimum difference between input voltage and output voltage for which the regulator can still supply the specified current.
What can a LM317 pinout be used for?
It can be used as a fixed voltage regulator, AC voltage regulator, current limiter, Battery charger, local and on-card regulation. Furthermore, it can be used as a current regulator by connecting a resistor between the output and adjustment pin. It has one drawback that during regulation its voltage drop to about 2.5V.
Which is an example of an LM317 circuit?
The applications of LM317 includes: It is a positive voltage regulator and hence used in the regulation of positive voltages. It is used in designing current-limiter circuits which keeps the output current in limits. Battery charger circuits, reverse polarity circuits, variable power supply, motor control circuits are designed using LM317 IC.
What kind of voltage regulator does a NIMH Charger use?
While the circuit is running, the LED indicates charging. Here are Universal NiCd and NiMH battery charger circuit. It uses IC LM317T ( Hot IC) Control Current less 300mA, Size battery 2.4V,4.8V,9.6V.
What is the output voltage of a voltage regulator?
It has an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2V to 37V range. It has an internal current limiting, temperature detects shutdown and safe area compensation. Output current in excess of 1.5A
What’s the maximum temperature of a LM317 heat sink?
LM317 has a maximum temperature of 50 °C/W without a heat sink. I found this site good with the LM317 heat sink calculator. The LM317 Heat sink, how big?