参数资料
| 型号： | SPX1582T5-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 1/7页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 3A TO263-5 |
| 标准包装： | 500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.25 V ~ 6 V |
| 输入电压： | 1.8 V ~ 5.5 V |
| 电压 - 压降（标准）： | 0.4V @ 3A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 3A |
| 电流 - 限制（最小）： | 3.1A |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-263-6，D²Pak（5 引线+接片），TO-263BA |
| 供应商设备封装： | TO-263-5 |
| 包装： | 带卷 (TR) |
SPX1582
3A Ultra Low Dropout Voltage Regulator
Fast Response, Adjustable & Fixed
FEATURES
■ Low Dropout Voltage 500mV at 3A Full Load Current
SPX1582
■ 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
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
5 Pin TO-263
1 2 3 4 5
SPX1582
5 Pin TO-220
1 2 3 4 5
■ High efficiency "Green" Computer Systems
Now Available in Lead Free Packaging
DESCRIPTION
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
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 in 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 supply applications.
The SPX1582 offers protection against over-current faults, reversed input polarity, over temperature operation and
positive or negative transient voltages.
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.
TYPICAL APPLICATIONS CIRCUIT
3.3V
V IN
5V
V CTRL
V IN
C1
330 μ F
V CTRL
5
4
SPX1582
2
ADJ
3
1
V OUT
SENSE
R1
124 Ω
2.5V
V OUT
3.3V
V IN
5V
V CTRL
V IN
C1
330 μ F
V CTRL
5
4
SPX1582
2
3
1
V OUT
SENSE
2.5V
V OUT
C2
10 μ F
C4
2x330 μ F
C2
10 μ F
GND
C4
2x330 μ F
C3
.033 μ F
(1) V CTRL needed when V IN < 5V.
R2
124 Ω
(1) V CTRL needed when V IN < 5V.
(2) V OUT = V REF (1+R 2 /R 1 )+I ADJ R 2 .
(3) V REF is measured across adjust to sense.
Adjustable Regulator
Typical Fixed Regulator
Jun 17-06 Rev F
SPX1582 3A Ultra Low Dropout Voltage Regulator
1
? 2006 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SPX1582U | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U-2.5 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U-2.8 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U-3.3 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1582U5 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
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