 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
CBC2016T 数据表(PDF) 10 Page - Advanced Analogic Technologies |
|
||||||||||||||||||||||||||||||
CBC2016T 数据表(HTML) 10 Page - Advanced Analogic Technologies |
|
|
10 / 22 page  AAT2513 Dual 600mA Step-Down Converter with Synchronization 10 2513.2007.04.1.1 Functional Description The AAT2513 is a peak current mode pulse width modulated (PWM) converter with internal compen- sation. Each channel has independent input, enable, feedback, and ground pins with a 1.7MHz clock. Both converters operate in either a fixed fre- quency (PWM) mode or a more efficient light load (LL) mode. A phase shift pin programs the convert- ers to operate in phase or 180° out of phase. The converter can also be synchronized to an external clock during PWM operation. The input voltage range is 2.7V to 5.5V. An exter- nal resistive divider as shown in Figure 1 programs the output voltage up to the input voltage. The con- verter MOSFET power stage is sized for 600mA load capability with up to 96% efficiency. Light load efficiency is up to 90% at a 1mA load. Soft Start / Enable The AAT2513 soft start control prevents output volt- age overshoot and limits inrush current when either the input power or the enable input is applied. When pulled low, the enable input forces the con- verter into a low power non-switching state with a bias current of less than 1µA. Low Dropout Operation For conditions where the input voltage drops to the output voltage level, the converter duty cycle increases to 100%. As the converter approaches the 100% duty cycle, the minimum off time initially forces the high side on time to exceed the 1.7MHz clock cycle and reduce the effective switching fre- quency. Once the input drops below the level where the converter can regulate the output, the high side P-channel MOSFET is enabled continu- ously for 100% duty cycle. At 100% duty cycle the output voltage tracks the input voltage minus the I*R drop of the high side P-channel MOSFET. Functional Block Diagram EN1 LX1 DH DL PGND1 VIN1 FB1 EN2 LX2 DH DL PGND2 Comp. Control Logic Control Logic VIN2 FB AGND Voltage Reference Voltage Reference Comp Oscillator PS MODE/SYNC VCC Logic Logic Err. Amp. Err. Amp. |
类似零件编号 - CBC2016T |
|
类似说明 - CBC2016T |
|
|
|
链接网址 |
| 隐私政策 |
| ALLDATASHEETCN.COM |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 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 |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
