LM338T DATASHEET PDF

The LM voltage regulators can provide up to 1. Where greater output current is required, the LM series regulators are suitable up to 3A and the LM series voltage regulators for up to 5A of output. Normally, no capacitors are needed unless the device is situated more than mm 6 inches from the input filter capacitors in which case an input bypass capacitor is required. An optional output capacitor can be added to improve transient response.

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The LM voltage regulators can provide up to 1. Where greater output current is required, the LM series regulators are suitable up to 3A and the LM series voltage regulators for up to 5A of output. Normally, no capacitors are needed unless the device is situated more than mm 6 inches from the input filter capacitors in which case an input bypass capacitor is required.

An optional output capacitor can be added to improve transient response. The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection. However, other values such as or ohms can also be used for R 1. To determine the output voltage, enter values for the program R 1 and set R 2 resistors and hit the "Calculate" button. Please update your bookmarks. Note : The dropout voltage of the IC regulator is about 1.

Plan to be about 3V about the desired output voltage. You don't want to use too high an input voltage as the excess will need to be dissipated as heat through the regulator. See the voltage regulator datasheets above for specific details regarding the dropout voltage and heatsink requirements. When external capacitors are used with a voltage regulator it may be necessary to use protection diodes to prevent the capacitors from discharging through low current points into the voltage regulator.

Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted. Although the surge is very short in duration, there is enough energy to damage parts of the regulator IC. No protection diodes are required for output voltages of less than 25V or greater than 10 uF capacitance. Solid tantalum capacitors can be used on the voltage output to improve the ripple rejection of the voltage regulator. Last update 6 January Created 28 July R 2 [ohms].

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Datasheet Texas Instruments LM338

May General Description. The LM series of adjustable 3-terminal positive voltage. They are exceptionally easy to.

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LM317 / LM338 / LM350 Voltage Regulator Calculator

They are exceptionally easy to use and require only 2 resistors to set the output voltage. Careful circuit design has resulted in outstanding load and line regulation, comparable to many commercial power supplies. The LM family is supplied in a standard 3-lead transistor package. PDF , 3.

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