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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Ceramic capacitors are also good at high frequencies, but some types have a large decrease in capacitance at frequencies around 0. The bypass capacitor on the adjustment terminal can discharge through a low current junction.

In general, the best type of capacitors to use are solid tantalum.

PDF LM338K Datasheet ( Hoja de datos )

Control system wikipedialookup. If the bypass capacitor is used, it is sometimes necessary to include protection diodes to prevent the capacitor from discharging through internal low current paths and damaging the device. Switched-mode power supply wikipedialookup. 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.

A unique feature of the LM family is time-dependent current limiting. This occurs with values between pF and pF.


Variable-frequency drive wikipedialookup. Besides replacing fixed regulators or discrete designs, the LM is useful in a wide variety of other applications. Surge protector wikipedialookup. To do this, all quiescent operating current is returned to the output establishing a minimum load current requirement.

Discharge occurs when either the input or output is shorted. This is not true l,338k other types of positive regulators.

National Semiconductor – datasheet pdf

Resistive opto-isolator wikipedialookup. Two-port network wikipedialookup. The device is more sensitive to the absence of input bypassing when adjustment or output capacitors are ,m338k byt the above values will eliminate the possibility of problems. Schmitt trigger wikipedialookup. Overload protection remains functional even if the adjustment pin is accidentally disconnected.

Islanding wikipedialookup. Rectifier wikipedialookup. For this reason, 0. Power inverter wikipedialookup. Buck converter wikipedialookup.

An optional output capacitor can be added to improve transient response.

LM317 / LM338 / LM350 Voltage Regulator Calculator

An input bypass capacitor is recommended. The current limit circuitry allows peak currents of up to 12A to be drawn from the regulator for short periods of time. Regulator with Line Resistance in Output Lead.

The dropout voltage of the IC regulator is about 1. Stray voltage wikipedialookup. Current mirror wikipedialookup.

Tube sound wikipedialookup. Integrating ADC wikipedialookup. Even small capacitors can have a low enough internal series resistance to be able to deliver 20A spikes when shorted. Solid tantalum capacitors can be used on the voltage output to improve the ripple rejection of the llm338k regulator. Regulator with Protection Diodes. No protection diodes are required for output voltages of less than 25V or greater than 10 uF capacitance.


LMK Hoja de datos ( Datasheet PDF ) – 5A Positive Adjustable Voltage Regulator

For example, a 15V regulator with 0. They are exceptionally easy to use and require only 2 resistors to set the output voltage. If there is insufficient load on the output, the output will rise.

Last update 6 January Thank you for your participation! Current source wikipedialookup.

Dztasheet management system wikipedialookup. Thermal runaway wikipedialookup. To determine the output voltage, enter values for the program R 1 and set R 2 resistors and hit the “Calculate” button.

Although the surge is short, there is enough energy to damage parts of the IC. However, other values such as or ohms can also be used for R 1. Figure 3 shows an LM with protection diodes included for use with outputs greater than 25V and high values of output capacitance. This publication supersedes and replaces all information previously supplied. An optional output capacitor can be added to improve transient response. Careful circuit design has resulted in outstanding load and line regulation comparable to many commercial power supplies.

The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection.