Pinards PDF

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.

Author: Meztigis Mazule
Country: Eritrea
Language: English (Spanish)
Genre: Science
Published (Last): 6 December 2010
Pages: 115
PDF File Size: 11.28 Mb
ePub File Size: 16.20 Mb
ISBN: 881-9-21520-819-2
Downloads: 8293
Price: Free* [*Free Regsitration Required]
Uploader: Tygolrajas

This publication supersedes and replaces all information previously supplied. Surge protector wikipedialookup.

The LM family is supplied in a standard 3-lead transistor package. The adjustment terminal can be bypassed to ground on the LM to improve ripple rejection. 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. In the LM this discharge path is through vatasheet large junction that is able to sustain 25A surge with no problem.

Voltage regulator ln338klookup. Figure 3 shows an LM with protection diodes included for use with outputs greater than 25V and high values of output capacitance.


National Semiconductor – datasheet pdf

Buck converter wikipedialookup. Rectifier wikipedialookup. You don’t want to use too high an input voltage as the excess will need to be dissipated as heat through the regulator. Alternating current wikipedialookup. Opto-isolator wikipedialookup. Created 28 July Regulator with Line Resistance in Output Lead. Besides replacing fixed regulators or discrete designs, the LM is useful in a wide variety of other applications.

PDF LM338K Datasheet ( Hoja de datos )

Stray voltage wikipedialookup. This allows the LM to be used with heavy transient loads and speeds start-up under full-load conditions. Capacitor wikipedialookup. The discharge current depends on the value of datasheef capacitor, the output voltage of the regulator, and the rate of decrease of VI.

LM / LM / LM Voltage Regulator Calculator and Circuits

Regulation is measured at constant junction temperature. Transistor wikipedialookup. Careful circuit design has resulted in outstanding load and line regulation comparable to many commercial power supplies. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators.

However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results datashewt its use. Resistive opto-isolator wikipedialookup.


The ground of R2 can be returned near the ground of the load to provide remote ground sensing and improve load regulation. Ohm’s law wikipedialookup.

Under sustained loading conditions, the current limit decreases to a safe value protecting the regulator. The bypass capacitor on the adjustment terminal can discharge through a low datsheet junction.

The LM voltage regulators can provide up to 1. Current mirror wikipedialookup. An optional output capacitor can be added to improve transient response. L,338k this reason, 0. Thermal runaway wikipedialookup. This occurs with values between pF and pF. In general, the best type of capacitors to use are solid tantalum.

Since the regulator is “floating” and sees only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input to input differential is not exceeded. Specifications mentioned in this publication are subject to change without notice. Mains electricity wikipedialookup.