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Positive voltage regulator with low step-down and low noise output

Apr 15 2023 2023-04 Optoelectronics MaxLinear, Inc.
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The SPX3819 is a positive voltage regulator with low step-down and low noise output. In addition, the device provides a very low 800μA ground current at 100mA output. The SPX3819 has a maximum initial tolerance of less than 1% and logically-compatible ON/OFF switch input. It is an excellent choice for battery powered applications such as cordless phones, radio control systems and portable computers. It has several fixed output voltage options or adjustable output voltage. The device is offered in 8-pin NSOIC, 8-pin DFN and 5-pin SOT-23 packages.

The SPX3819 is a positive voltage regulator with low step-down and low noise output. In addition, the device provides a very low 800μA ground current at 100mA output. The SPX3819 has a maximum initial tolerance of less than 1% and logically-compatible ON/OFF switch input.

The SPX3819 is an excellent choice for battery powered applications such as cordless phones, radio control systems and portable computers. It has several fixed output voltage options or adjustable output voltage. The device is offered in 8-pin NSOIC, 8-pin DFN and 5-pin SOT-23 packages.

When disabled, power consumption drops to almost zero. Other key features include reverse battery protection, current limiting and hot shutdown. The SPX3819 includes a reference bypass pin for optimal low noise output performance. Due to its very low output temperature coefficient, the device also makes for a superior low-power voltage reference.

 

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 & Adjustable Output Voltages:
   − 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V & 5.0V Fixed Output Voltages
   − ≥1.235V Adjustable Output Voltages
● Available in RoHS Compliant, Lead Free Packages:
   − 5-pin T-23, 8-pin SOIC and 8-pin DFN

 

Applications

● Portable consumer device
● Portable instrument
● Industrial equipment
● SMPS Post regulator

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