SPX3819M5-1.2/TR Просмотр технического описания (PDF) - Signal Processing Technologies

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SPX3819M5-1.2/TR

500mA, Low-Noise LDO Voltage Regulator

Signal Processing Technologies 

®

SPX3819

500mA, Low-Noise LDO Voltage Regulator

FEATURES

■ Low Noise: 40µV Possible

■ High Accuracy: 1%

■ Reverse Battery Protection

■ Low Dropout: 340mV at Full Load

■ Low Quiescent Current: 90µA

■ Zero Off-Mode Current

■ Fixed Output: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V,

3.1V, 3.3V, 5.0V

■ 5 Pin SOT-23, 8 Pin nSOIC and 8 pin 2X3 DFN

Packages.

APPLICATIONS

■ Battery Powered Systems

■ Cordless Phones

■ Radio Control Systems

■ Portable/Palm Top/Notebook Computers

■ Portable Consumer Equipment

■ Portable Instrumentation

■ Bar Code Scanners

■ SMPS Post Regulators

EN 1

8 ADJ/BYP

SPX3819

NC 2

7 GND

VIN 3 8 Pin DFN 6 NC

NC 4

5 VOUT

Now Available in Lead Free Packaging

DESCRIPTION

The SPX3819 is a positive voltage regulator with a low dropout voltage and low noise output. In addition,

this device offers a very low ground current of 800µA at 100mA output. The SPX3819 has an initial tolerance

of less than 1% max and a logic compatible ON/OFF switched input. When disabled power consumption

drop to nearly zero. Other key features include reverse battery protection, current limit, and thermal

shutdown. The SPX3819 includes a reference bypass pin for optimal low noise output performance. With

its very low output temperature coefficient, this device also makes a superior low power voltage reference.

The SPX3819 is an excellent choice for use in battery-powered applications such as cordless telephones,

radio control systems, and portable computers. It is available in several fixed voltages 1.2V, 1.5V, 1.8V,

2.5V, 3.0V, 3.1V, 3.3V, 5.0V or with an adjustable output. This device is offered in 8 pin nSOIC, 8 pin DFN

and 5-pin SOT-23 packages.

TYPICAL APPLICATION CIRCUIT

VIN

1

5

VOUT

+

2

+ GND

SPX3819

3

EN

4 BYP

(Opt.)

ENABLE may be tied directly to VIN

TOP View

Date:6/8/2004

SPX3819 500mA, Low Noise LDO Voltage Regulator

1

© Copyright 2004 Sipex Corporation

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