поискавой системы для электроныых деталей |
|
LM2651MTCX-1.8 датащи(PDF) 1 Page - National Semiconductor (TI) |
|
|
LM2651MTCX-1.8 датащи(HTML) 1 Page - National Semiconductor (TI) |
1 / 11 page LM2651 1.5A High Efficiency Synchronous Switching Regulator General Description The LM2651 switching regulator provides high efficiency power conversion over a 100:1 load range (1.5A to 15mA). This feature makes the LM2651 an ideal fit in battery- powered applications that demand long battery life in both run and standby modes. Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2651 enters a low power hysteretic or “sleep” mode to keep the efficiency high. In many applications, the efficiency still exceeds 80% at 15mA load. A shutdown pin is available to disable the LM2651 and reduce the supply current to less than 10µA. The LM2651 contains a patented current sensing circuitry for current mode control. This feature eliminates the external current sensing resistor required by other current-mode DC-DC converters. The LM2651 has a 300 kHz fixed frequency internal oscilla- tor. The high oscillator frequency allows the use of extremely small, low profile components. A programmable soft-start feature limits current surges from the input power supply at start up and provides a simple means of sequencing multiple power supplies. Other protection features include input undervoltage lockout, current limiting, and thermal shutdown. Features n Ultra high efficiency up to 97% n High efficiency over a 1.5A to milliamperes load range n 4V to 14V input voltage range n 1.8V, 2.5V, 3.3V, or ADJ output voltage n Internal MOSFET switch with low R DS(on) of 75m Ω n 300kHz fixed frequency internal oscillator n 7µA shutdown current n Patented current sensing for current mode control n Input undervoltage lockout n Adjustable soft-start n Current limit and thermal shutdown n 16-pin TSSOP package Applications n Personal digital assistants (PDAs) n Computer peripherals n Battery-powered devices n Handheld scanners n High efficiency 5V conversion Typical Application 10092515 Efficiency vs Load Current (V IN = 5V, VOUT = 3.3V 10092501 April 2005 © 2005 National Semiconductor Corporation DS100925 www.national.com |
Аналогичный номер детали - LM2651MTCX-1.8 |
|
Аналогичное описание - LM2651MTCX-1.8 |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю 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 |