LT1580 7A, Very Low Dropout Regulator
The LT™1580 is a 7A 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 540mV at 7A. 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 LT1580. A remote SENSE pin is brought out. This feature virtually eliminates output voltage variations due to load changes. Typical load regulation, measured at the SENSE pin, for a load current step of 100mA to 7A is less than 1mV. The LT1580 has fast transient response, equal to the LT1584. On fixed voltage devices, the ADJ pin is brought out. A small capacitor on the ADJ 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, 540mV at 7A 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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LT1580 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) * |
| LT1580CQ |
DD PAK |
5 |
C |
$6.15 |
$5.40 |
| LT1580CQ#PBF |
DD PAK |
5 |
C |
$6.15 |
$5.40 |
| LT1580CQ#TR |
DD PAK |
5 |
C |
|
$5.52 |
| LT1580CQ#TRPBF |
DD PAK |
5 |
C |
|
$5.52 |
| LT1580CR-2.5 |
DD PAK |
7 |
C |
$6.35 |
$5.55 |
| LT1580CR-2.5#PBF |
DD PAK |
7 |
C |
$6.35 |
$5.55 |
| LT1580CR-2.5#TR |
DD PAK |
7 |
C |
|
$5.65 |
| LT1580CR-2.5#TRPBF |
DD PAK |
7 |
C |
|
$5.65 |
| LT1580CT |
TO-220 |
5 |
C |
$6.10 |
$5.30 |
| LT1580CT#06PBF |
TO-220 |
5 |
C |
$6.10 |
$5.30 |
| LT1580CT#PBF |
TO-220 |
5 |
C |
$6.10 |
$5.30 |
| LT1580CT7-2.5 |
TO-220 |
7 |
C |
$6.35 |
$5.45 |
| LT1580CT7-2.5#06PBF |
TO-220 |
7 |
C |
$6.35 |
$5.45 |
| LT1580CT7-2.5#PBF |
TO-220 |
7 |
C |
$6.35 |
$5.45 |
| LT1580IQ |
DD PAK |
5 |
I |
$7.30 |
$6.30 |
| LT1580IQ#PBF |
DD PAK |
5 |
I |
$7.30 |
$6.30 |
| LT1580IQ#TR |
DD PAK |
5 |
I |
|
$6.42 |
| LT1580IQ#TRPBF |
DD PAK |
5 |
I |
|
$6.42 |
| LT1580IR-2.5 |
DD PAK |
7 |
I |
$7.45 |
$6.45 |
| LT1580IR-2.5#PBF |
DD PAK |
7 |
I |
$7.45 |
$6.45 |
| LT1580IR-2.5#TR |
DD PAK |
7 |
I |
|
$6.57 |
| LT1580IR-2.5#TRPBF |
DD PAK |
7 |
I |
|
$6.57 |
| LT1580IT |
TO-220 |
5 |
I |
$7.20 |
$6.20 |
| LT1580IT#06PBF |
TO-220 |
5 |
I |
$7.20 |
$6.20 |
| LT1580IT#PBF |
TO-220 |
5 |
I |
$7.20 |
$6.20 |
| LT1580IT7-2.5 |
TO-220 |
7 |
I |
$7.35 |
$6.40 |
| LT1580IT7-2.5#06PBF |
TO-220 |
7 |
I |
$7.35 |
$6.40 |
| LT1580IT7-2.5#PBF |
TO-220 |
7 |
I |
$7.35 |
$6.40 |
LT1580 数据手册及相关资料下载
- 数据手册(英文) : LT1580 - 7A, Very Low Dropout Regulator.PDF
- 应用指南 (英文) : AN66 - linear Technology Magazine Circuit Collection, Volume II.PDF
- 设计要点 (英文) : DN19 - A Two Wire Isolated and Powered 10-Bit Data Acquisition System.PDF
- 设计要点 (英文) : DN22 - New 12-Bit Data Acquisition Systems Communicate with Microprocessors Over 4 Wires.PDF
- 设计要点 (英文) : DN292 - Very Low Dropout (VLDO) linear Regulators Supply Low Voltage Outputs.PDF
- 可靠性数据 : R385 Reliability Data .PDF
