 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
16SP100M Datasheet(PDF) 1 Page - National Semiconductor (TI) |
|
|
||||||||||||||||||||||||||||||
16SP100M Datasheet(HTML) 1 Page - National Semiconductor (TI) |
|
|
1 / 23 page  LM2747 Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization General Description The LM2747 is a high-speed synchronous buck regulator controller with a feedback voltage accuracy of ±1%. It can provide simple down conversion to output voltages as low as 0.6V. Though the control section of the IC is rated for 3 to 6V, the driver section is designed to accept input supply rails as high as 14V. The use of adaptive non-overlapping MOSFET gate drivers helps avoid potential shoot-through problems while maintaining high efficiency. The IC is designed for the more cost-effective option of driving only N-channel MOS- FETs in both the high-side and low-side positions. It senses the low-side switch voltage drop for providing a simple, adjustable current limit. The LM2747 features a fixed-frequency voltage-mode PWM control architecture which is adjustable from 50 kHz to 1 MHz with one external resistor. In addition, the LM2747 also allows the switching frequency to be synchronized to an external clock signal over the range of 250 kHz to 1 MHz. This wide range of switching frequency gives the power supply designer the flexibility to make better tradeoffs be- tween component size, cost and efficiency. Features include the ability to startup with a pre-biased load on the output, soft-start, input undervoltage lockout (UVLO) and Power Good (based on both undervoltage and overvolt- age detection). In addition, the shutdown pin of the IC can be used for providing startup delay, and the soft-start pin can be used for implementing precise tracking, for the purpose of sequencing with respect to an external rail. Features n ± 1% feedback voltage accuracy over temperature n Switching frequency from 50 kHz to 1 MHz n Switching frequency synchronize range 250 kHz to 1 MHz n Startup with a pre-biased output load n Power stage input voltage from 1V to 14V n Control stage input voltage from 3V to 6V n Output voltage adjustable down to 0.6V n Power Good flag and shutdown n Output overvoltage and undervoltage detection n Low-side adjustable current sensing n Adjustable soft-start n Tracking and sequencing with shutdown and soft start pins n TSSOP-14 package Applications n Down Conversion from 3.3V n Cable Modem, DSL and ADSL n Laser Jet and Ink Jet Printers n Low Voltage Power Modules n DSP, ASIC, Core and I/O Typical Application 20150901 March 2006 © 2006 National Semiconductor Corporation DS201509 www.national.com |
Similar Part No. - 16SP100M |
|
Similar Description - 16SP100M |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
