 |
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
|
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
LM3743MMX-1000 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
|
|
||||||||||||||||||||||||||||||
LM3743MMX-1000 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
|
|
1 / 23 page  LM3743 N-Channel FET Synchronous Buck Controller for Low Output Voltages General Description The LM3743 is a voltage mode PWM buck controller which implements synchronous rectification. It provides a low cost, fault tolerant, and efficient point of load solution. To reduce component count several parameters are fixed, such as switching frequency and the short circuit protection level. For example the LM3743 has an operating switching frequency of 300 kHz or 1 MHz and a fixed 500 mV high side current limit for switch node short-circuit protection. LM3743 is a very fault tolerant IC with switch node short-circuit, output undervoltage protection, and the ability to self recover after the removal of the fault. It avoids the need to over design components due to thermal runaway during a fault condition, thus resulting in a lower cost solution. It employs a propri- etary monotonic glitch free pre-bias start-up method suited for FPGAs and ASIC logic devices. A 0.8V internal reference with ±1.75% accuracy is ideal for sub-volt conversion. An external programmable soft-start allows for tracking and tim- ing flexibility. The driver features 1.6 Ω of pull-up resistance and 1 Ω of pull-down drive resistance for high power density and very efficient power processing. Features n Input voltage from 3.0V to 5.5V n Output voltage adjustable down to 0.8V n Reference accuracy: ±1.75%, over full temperature and input voltage range n Low-side sensing programmable current limit n Fixed high-side sensing for supplemental short-circuit protection n Undervoltage protection n Hiccup mode protection eliminates thermal runaway during fault conditions n Externally programmable soft-start with tracking capability n Switching frequency options of 1 MHz or 300 kHz n Pre-bias start-up capability n MSOP-10 package Applications n ASIC/FPGA/DSP core power n Broadband Communications n Multi-media Set Top Boxes n Networking Equipment n Printers/Scanners n Servers n Low Voltage Distributed Power Typical Application 20177401 September 2006 © 2006 National Semiconductor Corporation DS201774 www.national.com |
Número de pieza similar - LM3743MMX-1000 |
|
Descripción similar - LM3743MMX-1000 |
|
|
|
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 |
Spanish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
