поискавой системы для электроныых деталей |
|
LM3103 датащи(PDF) 8 Page - Texas Instruments |
|
|
LM3103 датащи(HTML) 8 Page - Texas Instruments |
8 / 20 page LM3103 SNVS523E – SEPTEMBER 2007 – REVISED NOVEMBER 2009 www.ti.com SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM Functional Description The LM3103 Step Down Switching Regulator features all required functions to implement a cost effective, efficient buck power converter which is capable of supplying 0.75A to loads. It contains dual N-Channel main and synchronous MOSFETs. The Constant ON-Time (COT) regulation scheme requires no loop compensation, results in a fast load transient response and simple circuit implementation. The regulator can function properly even with an all ceramic output capacitor network, and does not rely on the output capacitor’s ESR for stability. The operating frequency remains constant with line variations due to the inverse relationship between the input voltage and the on-time. The valley current limit detection circuit, with a limit set internally at 0.9A, inhibits the main MOSFET until the inductor current level subsides. The LM3103 can be applied in numerous applications and can operate efficiently for inputs as high as 42V. Protection features include VCC under-voltage lockout, output over-voltage protection, thermal shutdown, gate drive under-voltage lock-out. The LM3103 is available in the thermally enhanced HTSSOP-16 package. COT Control Circuit Overview COT control is based on a comparator and a one-shot on-timer, with the output voltage feedback (feeding to the FB pin) compared with a 0.6V internal reference. If the voltage of the FB pin is below the reference, the main MOSFET is turned on for a fixed on-time determined by a programming resistor RON and the input voltage VIN, upon which the on-time varies inversely. Following the on-time, the main MOSFET remains off for a minimum of 240 ns. Then, if the voltage of the FB pin is below the reference, the main MOSFET is turned on again for another on-time period. The switching will continue to achieve regulation. 8 Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated Product Folder Links: LM3103 |
Аналогичный номер детали - LM3103 |
|
Аналогичное описание - LM3103 |
|
|
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 |