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SPX3819R2-L-1-2 Datasheet(PDF) 1 Page - Exar Corporation |
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SPX3819R2-L-1-2 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 13 page 1 DESCRIPTION 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. Adj. Output also available. ■ Available in RoHS Compliant, Lead Free Packages: 5 Pin SOT-23, 8 Pin Narrow SOIC and 8 pin 2X3 DFN 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. APPLICATIONS ■ Battery Powered Systems ■ Cordless Phones ■ Radio Control Systems ■ Portable/Palm Top/Notebook Computers TYPICAL APPLICATION CIRCUIT + + GND EN BYP (Opt.) ENABLE may be tied directly to V IN SPX3819 1 2 3 4 5 V IN V OUT TOP View ■ Portable Consumer Equipment ■ Portable Instrumentation ■ Bar Code Scanners ■ SMPS Post Regulators SPX3819 8 Pin DFN EN NC NC NC VIN ADJ/BYP VOUT GND 5 6 7 8 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com SPX3819 500mA, LOW-NOISE LDO VOLTAGE REGULATOR JULY 30, 2008 R EV. F |
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