LT1581 10A, Very Low Dropout Regulator
The LT®1581 is a 10A low dropout regulator designed to power the new generation of microprocessors. The dropout voltage of this device is 100mV at light loads rising to just 430mV at 10A. To achieve this dropout a second low current input voltage 1V greater than the output voltage is required. The device can also be used as a single supply device where dropout is comparable to an LT1584. Several other new features have been added to the LT1581. A remote SENSE pin is brought out. This feature virtually eliminates output voltage variations due to load changes. Typical load regulation for a load current step of 100mA to 10A, measured at the SENSE pin, is less than 1mV. The LT1581 has fast transient response, equal to the LT1584. On fixed voltage devices, the ADJUST pin is brought out. A small capacitor on the ADJUST pin further improves transient response. This device is ideal for generating processor supplies of 2V to 3V on motherboards where both 5V and 3.3V supplies are available
产品特点 Features
- Low Dropout, 430mV at 10A Output Current
- Fast Transient Response
- Remote Sense
- 1mV Load Regulation
- Fixed 2.5V Output and Adjustable Output
- No Supply Sequencing Problems in
Dual Supply Mode
参数
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应用
- Microprocessor Supplies
- Post Regulators for Switching Supplies
- High Current Regulators
- 5V to 3.XXV for Pentium® Processors Operating
at 90MHz to 166MHz and Beyond
- 3.3V to 2.9V for Portable Pentium Processor
- Power PC™ Series Power Supplies
典型应用图
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LT1581 订购信息和价格参考Package Variations and Pricing
| 器件型号 |
封装 |
引脚 |
温度 |
价格 (以 1 ~ 99 片为批量) |
价格 (以 1000 片为批量) * |
| LT1581CT7 |
TO-220 |
7 |
C |
$8.75 |
$7.00 |
| LT1581CT7#PBF |
TO-220 |
7 |
C |
$8.75 |
$7.00 |
| LT1581CT7-2.5 |
TO-220 |
7 |
C |
$8.75 |
$7.00 |
| LT1581CT7-2.5#06PBF |
TO-220 |
7 |
C |
$8.75 |
$7.00 |
| LT1581CT7-2.5#PBF |
TO-220 |
7 |
C |
$8.75 |
$7.00 |
LT1581 数据手册及相关资料下载
- 数据手册(英文) : LT1581 - 10A, Very Low Dropout Regulator.PDF
- 可靠性数据 : R385 Reliability Data .PDF
