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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Overload protection remains functional even if the adjustment pin is accidentally disconnected. Although the surge is short, there is enough energy to damage parts of the IC.
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PDF LM338K Datasheet ( Hoja de datos )
Regulator with Protection Diodes. Changes in output voltage due to heating effects are taken into account separately by thermal rejection.
This allows the LM to be used with heavy transient loads and speeds start-up under full-load conditions. The discharge current depends on the value of the capacitor, the output voltage of the regulator, and the rate of decrease of VI. Power inverter wikipedialookup.
For example, a 15V regulator with 0. Although the LM is stable with no output capacitors, like any feedback circuit, certain values of external capacitance can cause excessive ringing.
The current limit circuitry allows peak currents of up to 12A to be drawn from the regulator for short periods of time. Ohm’s law wikipedialookup. Transistor wikipedialookup. Thermal runaway wikipedialookup. Surge protector wikipedialookup. However, other values such as or ohms can also be used for R 1. Last update 6 January Also included on the chip are thermal overload protection and safe area protection for the power transistor.
LM Datasheet and Product Info | Analog Devices
See the voltage regulator datasheets above for specific details regarding the dropout voltage and heatsink requirements. Switched-mode power supply wikipedialookup. Tube sound 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. Plan to be about 3V about the desired output voltage. This eliminates line drops from appearing effectively in series with the reference and degrading regulation.
Control system ml338klookup. The adjustment terminal can be bypassed to ground on the LM to improve ripple rejection. Current mirror wikipedialookup.
The dropout voltage of the IC regulator is about 1. Voltage optimisation wikipedialookup. Voltage regulator wikipedialookup. When external capacitors are catasheet 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.
A unique feature of the LM lm3388k is time-dependent current limiting. Normally, no capacitors are needed unless the device is situated far from the input filter capacitors in which case an input bypass is needed.
LM / LM / LM Voltage Regulator Calculator and Circuits
When an output capacitor is connected to a regulator and the input is shorted, the output capacitor will discharge into the output of the regulator. In the LM this discharge path is through a large junction that is able to sustain 25A surge lm338k no problem. If the bypass capacitor is used, it is sometimes necessary to include protection diodes to prevent the capacitor from discharging through internal low dataaheet paths and damaging the device. Capacitor wikipedialookup. This bypass capacitor prevents ripple form being amplified as the output voltage is increased.
Since the regulator is “floating” and sees only the input-to-output differential voltage, supplies of several hundred volts can be lm338m as long as the maximum input to input differential is not exceeded. Current source wikipedialookup.
Solid tantalum capacitors have low impedance even at high frequencies. To determine the output voltage, enter values for the program R 1 and set R 2 resistors and hit the “Calculate” button. An input bypass capacitor is recommended. Solar micro-inverter wikipedialookup. Specifications mentioned in this publication are subject to change without notice.
The ground of R2 can be returned near the ground of the load to provide remote ground sensing and improve load regulation. Please update your bookmarks. Discharge occurs when either the input or output is shorted.