SPX3819500mA Low-Noise LDO Voltage Regulator December 2019 Rev. 2.0.5 GENERAL DESCRIPTIONAPPLICATIONS The SPX3819 is a positive voltage regulator • Portable Consumer Equipment with a low dropout voltage and low noise output. In addition, this device offers a very low • Portable Instrumentation ground current of 800μA at 100mA output. The • Industrial Equipment SPX3819 has an initial tolerance of less than 1% max and a logic compatible ON/OFF • SMPS Post Regulators switched input. When disabled, power consumption drops to nearly zero. Other key FEATURES features include reverse battery protection, current limit, and thermal shutdown. The • Low Noise: 40μV Possible SPX3819 includes a reference bypass pin for • High Accuracy: 1% optimal low noise output performance. With its very low output temperature coefficient, this • Reverse Battery Protection device also makes a superior low power voltage • Low Dropout: 340mV at Full Load reference. • Low Quiescent Current: 90μA The SPX3819 is an excellent choice for use in battery-powered applications such as cordless • Zero Off-Mode Current telephones, radio control systems, and portable • Fixed & Adjustable Output Voltages: computers. It is available in several fixed − 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V & 5.0V output voltage options or with an adjustable Fixed Output Voltages output voltage. − ≥1.235V Adjustable Output Voltages This device is offered in 8 pin NSOIC, 8 pin DFN and 5-pin SOT-23 packages. • Available in RoHS Compliant, Lead FreePackages: − 5-pin SOT-23, 8-pin SOIC and 8-pin DFN TYPICAL APPLICATION DIAGRAM Fig. 1: SPX3819 Application Circuit 1/13 Rev. 2.0.5