SPX3940U

更新时间： 2024-11-25 22:50:11

品牌	Logo	应用领域
西伯斯 - SIPEX		稳压器
页数	文件大小	规格书
7页	171K
描述
1A Low Drop Out Voltage Regulator

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中文翻译

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数据手册

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SPX3940U 数据手册

SPX3940/41/42

1A Low Drop Out Voltage Regulator

with Shutdown

(PRELIMINARY INFORMATION)

FEATURES

APPLICATIONS

• Output Accuracy 3.3V, @ 1A Output

• Very Low Quiescent Current

• Low Dropout Voltage

• Battery Powered Systems

• Cordless Telephones

• Radio Control Systems

• Portable/Palm Top/Notebook Computers

• Portable Consumer Equipment

• Portable Instrumentation

• Automotive Electronics

• SMPS Post-Regulator

• Extremely Tight Load And Line Regulation

• Very Low Temperature Coefficient

• Current & Thermal Limiting

• Error Flag Warns Of Output Dropout

• Voltage Reference

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 (100µA

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.

PIN CONNECTIONS

SOT-223 Package

TO-220 Package

SPX3940

TO-263-5 Package

SPX3941/42

TO-220-5 Package

V_OUT

SPX3940

GND/ ADJ

V_IN

Five Lead Package Pin Functions:

SPX3941/42

SPX3941

1) ERROR

INPUT

GND

SPX3942

ADJUST

GND/

ADJ

OUT

Front View

SHUTDOWN

Front View

TO-252 Package

GND

OUTPUT

INPUT

2 3 4

TO-263Package

SHUTDOWN OUTPUT

Top View

1 2 3 4 5

V_OUT

Top View

ADJ/GND

V_IN

GND/ ADJ

V _IN

Front View

Rev. 12/19/00

12 3 4 5 6 7

中文翻译

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与SPX3940U相关器件

型号	品牌	获取价格	描述	数据表
SPX3940U-1.8	SIPEX	获取价格	1A Low Dropout Voltage Regulator Fixed Output, Fast Response
SPX3940U-1-8	SIPEX	获取价格	Fixed Positive LDO Regulator, 1.8V, PSFM3, TO-220AB, TO-220, 3 PIN
SPX3940U-2.5	SIPEX	获取价格	1A Low Dropout Voltage Regulator Fixed Output, Fast Response
SPX3940U-2.5-L	SIPEX	获取价格	Fixed Positive LDO Regulator, 2.5V, 0.55V Dropout, PSFM3, LEAD FREE, TO-220, 3 PIN
SPX3940U-3.3	SIPEX	获取价格	1A Low Drop Out Voltage Regulator
SPX3940U-3.3-L	EXAR	获取价格	Fixed Positive LDO Regulator, 3.3V, 0.55V Dropout, PSFM3, LEAD FREE, TO-220, 3 PIN
SPX3940U-5.0	SIPEX	获取价格	1A Low Drop Out Voltage Regulator
SPX3940U-5.0-L	SIPEX	获取价格	Fixed Positive LDO Regulator, 5V, 0.55V Dropout, PSFM3, LEAD FREE, TO-220, 3 PIN
SPX3940U-5-0	SIPEX	获取价格	Fixed Positive LDO Regulator, 5V, 0.55V Dropout, PSFM3, TO-220AB, TO-220, 3 PIN
SPX3940U-L-1.8	SIPEX	获取价格	Fixed Positive LDO Regulator, 1.8V, 0.55V Dropout, PSFM3, TO-220, 3 PIN

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