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SPX3819_07 Datasheet, PDF (1/13 Pages) Sipex Corporation – 500mA, Low-Noise LDO Voltage Regulator | |||
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SPX3819
500mA, Low-Noise LDO Voltage Regulator
FEATURES
â Low Noise: 40µV Possible
â High Accuracy: 1%
â Reverse Battery Protection
â Low Dropout: 340mV at Full Load
â Low Quiescent Current: 90µA
â Zero Off-Mode Current
â Fixed Output: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V,
3.1V, 3.3V, 5.0V. Adj. Output also available.
â Available in RoHS Compliant, Lead Free
Packages: 5 Pin SOT-23, 8 Pin Narrow
SOIC and 8 pin 2X3 DFN
EN 1
8
SPX3819
NC 2
7
VIN 3 8 Pin DFN 6
NC 4
5
ADJ/BYP
GND
NC
VOUT
APPLICATIONS
â Battery Powered Systems
â Cordless Phones
â Radio Control Systems
â Portable/Palm Top/Notebook Computers
â Portable Consumer Equipment
â Portable Instrumentation
â Bar Code Scanners
â SMPS Post Regulators
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 drops 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
Jun 5-07 Rev E
SPX3819 500mA, Low Noise LDO Voltage Regulator
1
© 2007 Sipex Corporation
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