LM/LM 5-Amp Adjustable Regulators. General Description. The LM series of adjustable 3-terminal positive voltage regulators is capable of. LM LM 5-Amp Adjustable Regulators. General Description. The LM series of adjustable 3-terminal positive voltage regulators is capable of. The LM is rated for −55˚C ≤ TJ ≤ +˚C, and the LM is rated for .. Reproduction of TI information in TI data books or data sheets is permissible only if.

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Regulator with Line Resistance in Output Lead. Distribution management system wikipedialookup. The dropout voltage of the IC regulator is about 1.

National Semiconductor

Solar micro-inverter wikipedialookup. Surge protector wikipedialookup. Specifications mentioned in this publication are subject to change without notice. The LM voltage regulators can provide up to 1.

Current source wikipedialookup.

LMK Datasheet(PDF) – National Semiconductor (TI)

Discharge occurs when either the input or output is shorted. Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted. The bypass capacitor on the adjustment terminal can discharge through a low current junction. The adjustment terminal can be bypassed to ground on the LM to improve ripple rejection.

Power inverter wikipedialookup. Under sustained loading conditions, the current limit decreases to a safe value protecting the regulator. With the TO-3 package, it is easy to minimize the resistance from the case to the set resistor, by using 2 separate leads to the case.


A unique feature of the LM family is time-dependent current limiting. See the voltage regulator datasheets above for specific details lk338k the dropout voltage and heatsink requirements.

Buck converter wikipedialookup. Changes in output voltage due to heating effects are taken into account separately by thermal rejection.

Although the LM is stable with no output capacitors, like any feedback circuit, certain values of external capacitance can cause excessive ringing. Stray voltage wikipedialookup. Voltage optimisation wikipedialookup.

In the LM this discharge path is through a large junction that is able to sustain 25A surge with no problem.

This eliminates line drops from appearing effectively in series with the reference and degrading regulation. This bypass capacitor prevents ripple form being amplified as the output voltage is increased. The device is more sensitive to the absence of input bypassing when adjustment or output capacitors are used byt the above values will eliminate the possibility of problems.

Datasheer optional output capacitor can be added to improve transient response. Capacitor wikipedialookup. In general, the best type of capacitors to use are solid tantalum. Transistor wikipedialookup. This publication supersedes and replaces all information previously supplied. The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection.


This occurs with values between lm338i and pF. Opto-isolator wikipedialookup. Regulator with Protection Diodes. Ceramic capacitors are also good at high frequencies, but some types have a large decrease in capacitance at frequencies around 0.

LM338K Datasheet

An optional output capacitor can be added to improve transient response. Mains electricity wikipedialookup. Two-port network wikipedialookup. No protection diodes are required for output voltages of less than 25V or greater than 10 uF capacitance. Created 28 July Dtaasheet electric power wikipedialookup.

Voltage regulator wikipedialookup. 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.

Although the surge is short, there is enough energy to damage parts of the IC.

Islanding wikipedialookup. You don’t want to use too high dataeheet input voltage as the excess will need to be dissipated as heat through the regulator. Alternating current wikipedialookup. To determine the output voltage, enter values for the program R 1 and set R 2 resistors and hit the “Calculate” button.

The ground of R2 can be returned near the ground of the load to provide remote ground sensing and improve load regulation.