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參數(shù)資料
| 型號： | SPX1582T5-3.3 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| 中文描述： | 第3A超低壓降穩(wěn)壓器快速響應(yīng)，可調(diào) |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 56K |
| 代理商： | SPX1582T5-3.3 |
1
Date:5/25/04
SPX1582 3A Ultra Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
SPX1582
DESCRIPTION
FEATURES
■
Low Dropout Voltage 500mV at 3A Full Load Current
■
Adjustable Ouput Down to 1.25V from ATX Power Supply
■
Fixed Output Voltages of 3.3V and 2.5V
■
Extremely Tight Load and Line Regulation
■
Standard 5-Terminal Low Cost TO-220 and TO-263
The SPX1582 is a 3A Low Dropout Regulator with extremely low dropout voltage. The adjustable version requires only
two external resistors to set the output voltage. The fixed version has a preset output of 3.3V, 2.8V or 2.5V and does
not require any external resistors. The SPX1582 features a low dropout of 400mV(Typ.) and offers fast transient
response. This device is suitable for Pentium applications requiring 2.8V, 2.5V from 3.3V ATX power supplies, where
a low current input voltage 1V greater than the output voltage is needed. With an external sense pin the load regulation
is less than 1mV. This device is an excellent choice for the use of powering low voltage microprocessors that require
a lower dropout, fast transient response to regulate from 3.3V and 5V supplies. The SPX1582 is also an excellent choice
as a post regulator for switching supplies applications.
The SPX1582 offers protection against over-current faults, reversed input polarity, over temperature operation and
positive and negative transient voltage.
The SPX1582 is offered in a 5 pin TO-220 and TO-263 compatible with industry standard 5-terminal regulators. For 5A,
3A and 1.5A ultra low dropout versions refer to SPX1581, SPX1582 and SPX1583 data sheets respectively.
3A Ultra Low Dropout Voltage Regulator
Fast Response, Adjustable & Fixed
APPLICATIONS
■
3.3V to 2.8V ATX Power Supplies
■
3.3V to 2.9V for Portable PENTIUM
TM
Processor
■
5V to 3.5V VRE Supply
■
High efficiency "Green" Computer Systems
1
2
3
SPX1582
5 Pin TO-263
S
A
V
O
V
C
V
I
3
2
1
SPX1582
5 Pin TO-220
S
A
V
O
V
C
V
I
4
5
C4
μ
F
2.5V
V
OUT
R1
R2
V
OUT
SENSE
C2
10
μ
F
V
CTRL
C1
μ
F
3.3V
V
IN
5V
V
CTRL
SPX1582
5
4
2
3
1
(1) V
CTRL
needed when V
IN
< 5V.
OUT
REF
(1+R
2
/R
1
)+I
ADJ
R
2
.
(2) V
REF
= V
ADJ
V
IN
C3
μ
F
C4
μ
F
2.5V
V
OUT
V
OUT
SENSE
C2
10
μ
F
V
CTRL
C1
μ
F
3.3V
V
IN
5V
V
CTRL
SPX1582
5
4
2
3
1
(1) V
CTRL
needed when V
IN
< 5V.
GND
V
IN
Typical Fixed Regulator
Adjustable Regulator
TYPICAL APPLICATIONS CIRCUIT
Now Available in Lead Free Packaging
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SPX1582U-2.5 | 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U-2.8 | 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U-3.3 | 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U5-2.5 | 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U5-2.8 | 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPX1582T5-3-3/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:3A Ultra Low Dropout Voltage Regulator |
| SPX1582T5-L | 功能描述:低壓差穩(wěn)壓器 - LDO 3A ULTRA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SPX1582T5-L/TR | 功能描述:低壓差穩(wěn)壓器 - LDO 3A ULTRA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SPX1582T5-L-2-5 | 功能描述:低壓差穩(wěn)壓器 - LDO 3A ULTRA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SPX1582T5-L-2-5/TR | 功能描述:低壓差穩(wěn)壓器 - LDO 3A ULTRA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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