Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
LM340A Datasheet(PDF) 1 Page - National Semiconductor (TI) |
|
|
LM340A Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 15 page LM140/LM340A/LM340/LM7800C Series 3-Terminal Positive Regulators General Description The LM140/LM340A/LM340/LM7800C monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed voltage regulators in a wide range of appli- cations including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to ob- tain adjustable output voltages and currents. Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of exter- nal components. It is not necessary to bypass the output, al- though this does improve transient response. Input bypass- ing is needed only if the regulator is located far from the filter capacitor of the power supply. The 5V, 12V, and 15V regulator options are available in the steel TO-3 power package. The LM340A/LM340/LM7800C series is available in the TO-220 plastic power package, and the LM340-5.0 is available in the SOT-223 package, as well as the LM340-5.0 and LM340-12 in the surface-mount TO-263 package. Features n Complete specifications at 1A load n Output voltage tolerances of ±2% at Tj = 25˚C and ±4% over the temperature range (LM140A/LM340A) n Line regulation of 0.01% of VOUT/V of ∆VIN at 1A load (LM140A/LM340A) n Load regulation of 0.3% of VOUT/A (LM140A/LM340A) n Internal thermal overload protection n Internal short-circuit current limit n Output transistor safe area protection n P + Product Enhancement tested Device Output Voltages Packages LM140 5, 12, 15 TO-3 (K) LM340A/LM340 5, 12, 15 TO-3 (K), TO-220 (T), SOT-223 (MP), TO-263 (S) (5V and 12V only) LM7800C 5, 8, 12, 15 TO-220 (T) Typical Applications Fixed Output Regulator DS007781-1 *Required if the regulator is located far from the power supply filter. **Although no output capacitor is needed for stability, it does help transient response. (If needed, use 0.1 µF, ceramic disc). Adjustable Output Regulator DS007781-2 VOUT = 5V + (5V/R1 + IQ) R2 5V/R1 > 3IQ, load regulation (Lr) ≈ [(R1 + R2)/R1] (Lr of LM340-5). Current Regulator DS007781-3 ∆IQ = 1.3 mA over line and load changes. Comparison between SOT-223 and D-Pak (TO-252) Packages DS007781-38 Scale 1:1 May 1999 © 1999 National Semiconductor Corporation DS007781 www.national.com |
Número de pieza similar - LM340A |
|
Descripción similar - LM340A |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes 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 |