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參數資料
| 型號： | LT1581CT7-2.5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 10A, Very Low Dropout Regulators |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PZFM7 |
| 封裝： | PLASTIC, TO-220, 7 PIN |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 264K |
| 代理商： | LT1581CT7-2.5 |
1
LT1581/LT1581-2.5
10A, Very Low
Dropout Regulators
I
Low Dropout, 430mV at 10A Output Current
I
Fast Transient Response
I
Remote Sense
I
1mV Load Regulation
I
Fixed 2.5V Output and Adjustable Output
I
No Supply Sequencing Problems in
Dual Supply Mode
The LT
1581 is a 10A low dropout regulator designed to
power the new generation of microprocessors. The drop-
out 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.
FEATURES
DESCRIPTIO
N
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
Pentium is a registered trademark of Intel Corporation.
PowerPC is a trademark of IBM Corporation.
APPLICATIO
S
U
I
Microprocessor Supplies
I
Post Regulators for Switching Supplies
I
High Current Regulators
I
5V to 3.XXV for Pentium
Processors Operating
at 90MHz to 166MHz and Beyond
I
3.3V to 2.9V for Portable Pentium Processor
I
PowerPC
TM
Series Power Supplies
Dropout Voltage –
Minimum Power Voltage
TYPICAL APPLICATIO
N
U
OUTPUT
SENSE
ADJ
GND
0.1
μ
F
1581 TA01
10
μ
F
TANT
330
μ
F
OS-CON
2.5V/10A
LT1581-2.5
100
μ
F TANT
AVX TPS
×
7
POWER
3.3V
10A
5V
0.2A
CONTROL
+
+
+
2.5V Microprocessor Supply
OUTPUT CURRENT (A)
M
(
P
O
)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1581 G03
0
1
5
7
4
2
3
6
8
10
9
DATA SHEET LIMIT
T
J
= 25
°
C
T
J
= 125
°
C
INDICATES GUARANTEED TEST POINTS
相關PDF資料 |
PDF描述 |
|---|---|
| LT1581 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1584CT | 7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| LT1584CT-3.3 | 7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| LT1584CT-3.38 | 7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| LT1584CT-3.45 | 7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LT1584 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| LT1584/5/7 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| LT1584/5/7-3.3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| LT1584/5/7-3.45 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
| LT1584/5/7-3.6 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed |
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