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參數(shù)資料
| 型號(hào)： | SPX3940 |
| 英文描述： | 1A Low Drop Out Voltage Regulator |
| 中文描述： | 1A低壓降穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大小： | 169K |
| 代理商： | SPX3940 |
Rev. 12/19/00
1A Low Drop Out Voltage Regulator
with Shutdown
(PRELIMINARY INFORMATION)
FEATURES
Output Accuracy 3.3V, @ 1A Output
Very Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load And Line Regulation
Very Low Temperature Coefficient
Current & Thermal Limiting
Error Flag Warns Of Output Dropout
PRODUCT DESCRIPTION
The SPX3940/41/42 is a low power voltage regulator. This device is an excellent choice for battery-powered applications such as
cordless telephones, radio control systems and portable computers. The SPX3940/41/42 features very low quiescent current (100
μ
A
Typ.) and very low dropout voltage. This includes a tight initial tolerance of 1% max and 2% max., and very low output temperature
coefficient, making the SPX3940/41/42 useful as a low-power voltage reference.
The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling voltage input of batteries.
Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The SPX3940/41/42 is
offered in 3-pin and 5-pin TO-220 package SOT-223, and surface mount TO-263 packages.
The regulator output voltage (of the 8-pin SO-8 and 5-pin TO-220 & TO-263) may be pin-strapped for a 3.3V or programmed from
1.24V to 29V with an external pair of resistors.
APPLICATIONS
Battery Powered Systems
Cordless Telephones
Radio Control Systems
Portable/Palm Top/Notebook Computers
Portable Consumer Equipment
Portable Instrumentation
Automotive Electronics
SMPS Post-Regulator
Voltage Reference
S
Front View
3
2
1
TO-263Package
V
OUT
GND/ ADJ
V
IN
SOT-223 Package
Front View
SPX3940
1
3
2
V
OUT
GND/
ADJ
V
IN
TO-263-5 Package
Top View
1 2 3 4 5
SPX3941/42
INPUT
GND
INPUT
ERROR
OUTPUT
GND
Five Lead Package Pin Functions:
SPX3941
SPX3942
1)
2)
3)
4)
5)
ADJUST
SHUTDOWN
OUTPUT
SHUTDOWN
Top View
SPX3941/42
TO-220-5 Package
5
4
3
2
1
TO-220 Package
Front View
SPX3940
V
OUT
GND/ ADJ
V
IN
Front View
TO-252 Package
3
2
1
S
ADJ/GND
V
IN
V
OUT
PIN CONNECTIONS
SPX3940/41/42
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPX3940_12 | 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:1A Low Dropout Voltage Regulator |
| SPX3940AM3 | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:1A Low Drop Out Voltage Regulator |
| SPX3940AM3-1.8 | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:1A Low Dropout Voltage Regulator Fixed Output, Fast Response |
| SPX3940AM3-1.8/ | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:1A Low Dropout Voltage Regulator Fixed Output, Fast Response |
| SPX3940AM3-2.5 | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:1A Low Dropout Voltage Regulator Fixed Output, Fast Response |
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