Moteur de recherche de fiches techniques de composants électroniques |
|
UC2577T-ADJ Fiches technique(PDF) 7 Page - Texas Instruments |
|
UC2577T-ADJ Fiches technique(HTML) 7 Page - Texas Instruments |
7 / 8 page UNITRODE CORPORATION 7 CONTINENTAL BLVD. • MERRIMACK, NH 03054 TEL. (603) 424-2410 • FAX (603) 424-3460 4. Input Capacitor Selection (CIN) To reduce noise on the supply voltage caused by the switching action of a step-up regulator (ripple current noise), VIN should be bypassed to ground. A good qual- ity 0.1 µF capacitor with low ESR should provide suffi- cient decoupling. If the UC2577 is located far from the supply source filter capacitors, an additional electrolytic (47 µF, for example) is required. Nichicon - Types PF, PX, or PZ 927 East StateParkway, Schaumburg, IL 60173 (708)843-7500 United Chemi-CON - Types LX, SXF, or SXJ 9801 West Higgens, Rosemont, IL 60018 (708)696-2000 Figure 6. Aluminum Electrolytic Capacitors Recommended for Switching Regulators 5. Output Diode Selection (D) In the step-up regulator, the switching diode must with- stand a reverse voltage and be able to conduct the peak output current of the UC2577. Therefore a suitable diode must have a minimum reverse breakdown voltage greater than the circuit output voltage, and should also be rated for average and peak current greater than ILOADmax and IDpk. Because of their low forward voltage drop (and thus higher regulator efficiencies), Schottky barrier diodes are often used in switching regulators. Re- fer to Figure 7 for recommended part numbers and volt- age ratings of 1A and 3A diodes. VOUTmax Schottky Fast Recovery 1A 3A 1A 3A 20V 1N5817 1N5820 MBR120P MBR320P 30V 1N5818 1N5821 MBR130P MBR330P 11DQ03 31DQ03 40V 1N5819 1N5822 MBR140P MBR340P 11DQ04 31DQ04 50V MBR150 MBR350 1N4933 11DQ05 31DQ05 MUR105 100V 1N4934 MR851 MUR110 30DL1 10DL1 MR831 MBRxxx and MURxxx are manufactured by Motorola. 1DDxxx, 11Cxx and 31Dxx are manufactured by International Rectifier Figure 7. Diode Selection Chart UC2577-ADJ ORDERING INFORMATION Unitrode Type Number UC2577T-ADJ 5 Pin TO-220 Plastic Package UC2577TD-ADJ 5 Pin TO-263 Plastic Package APPLICATIONS INFORMATION (cont.) 7 |
Numéro de pièce similaire - UC2577T-ADJ |
|
Description similaire - UC2577T-ADJ |
|
|
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 |