Moteur de recherche de fiches techniques de composants électroniques |
|
LM117JAN Fiches technique(PDF) 2 Page - Texas Instruments |
|
|
LM117JAN Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 23 page LM117JAN 3-Terminal Adjustable Regulator General Description The LM117 adjustable 3-terminal positive voltage regulator is capable of supplying either 0.5A or 1.5A over a 1.2V to 37V output range. It is exceptionally easy to use and re- quires only two external resistors to set the output voltage. Further, both line and load regulation are better than stan- dard fixed regulators. In addition to higher performance than fixed regulators, the LM117 series offers full overload protection available only in IC’s. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment ter- minal is disconnected. Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with stan- dard 3-terminal regulators. Besides replacing fixed regulators, the LM117 is useful in a wide variety of other applications. Since the regulator is “floating” and sees only the input-to-output differential volt- age, supplies of several hundred volts can be regulated as long as the maximum input to output differential is not ex- ceeded, i.e., avoid short-circuiting the output. Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment pin and output, the LM117 can be used as a precision current regulator. Sup- plies with electronic shutdown can be achieved by clamping the adjustment terminal to ground which programs the out- put to 1.2V where most loads draw little current. For the negative complement, see LM137 series data sheet. Features n Guaranteed 0.5A or 1.5A output current n Adjustable output down to 1.2V n Current limit constant with temperature n 80 dB ripple rejection n Output is short-circuit protected Ordering Information NS Part Number JAN Part Number NS Package Number Package Description JL117BXA JM38510/11703BXA H03A 3LD T0–39 Metal Can JL117SXA JM38510/11703SXA H03A 3LD T0–39 Metal Can JL117BYA JM38510/11704BYA K02C 2LD T0–3 Metal Can JL117SYA JM38510/11704SYA K02C 2LD T0–3 Metal Can Connection Diagrams (TO-3) Metal Can Package (TO-39) Metal Can Package 20149030 CASE IS OUTPUT Bottom View Steel Package NS Package Number K02C 20149031 CASE IS OUTPUT Bottom View NS Package Number H03A March 2006 © 2006 National Semiconductor Corporation DS201490 www.national.com |
Numéro de pièce similaire - LM117JAN |
|
Description similaire - LM117JAN |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |