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Manufacturer Part #


SPX3819 Series 3.3 V 500 mA Fixed Output SMT LDO Regulator - SOT-23-5

ECAD Model:
Mfr. Name: MaxLinear
Standard Pkg:
Product Variant Information section
Date Code: 2011
Product Specification Section
Technical Attributes
Attributes Table
Input Voltage-Min: 2.5V
Input Voltage-Max: 16V
Output Voltage Fixed: 3.3V
Dropout Voltage-Max: 0.55V
Output Current-Max: 0.5A
Tolerance (%): ±1%
Operating Temp Range: -40°C to +125°C
Regulator Topology: Fixed
Quiescent Current: 90µA
No. of Outputs: Single
Output Noise: 40µV
Load Regulation (%): 0.05%
Current - Limit: 0.8A
Line Regulation (%): 0.04%
Package Style:  SOT-23-5 (SOT-25)
Mounting Method: Surface Mount
Features & Applications

The SPX3819M5-L-3-3/TR is a positive voltage regulator with a lowdropout voltage and low noise output. In addition, this device offers a very lowground current of 800 μA at 100 mA output. The SPX3819 has an initial toleranceof less than 1% max and a logic compatible ON/OFF switched input. When disabled,power consumption drops to nearly zero. Other key features include reversebattery protection, current limit, and thermal shutdown.

The SPX3819 includes a reference bypass pin for optimal low noise outputperformance. With its very low output temperature coefficient, this device alsomakes a superior low power voltage reference. The SPX3819 is an excellent choicefor use in battery-powered applications such as cordless telephones, radiocontrol systems, and portable computers. It is available in several fixedvoltages -- 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3. V, 3.3 V, 5.0 V -- or with anadjustable output. This device is offered in 8 pin NSOIC, 8 pin DFN and 5-pinSOT-23 packages.


  • Low Noise: 40 μV Possible
  • High Accuracy: 1%
  • Reverse Battery Protection
  • Low Dropout: 340 mV at Full Load
  • Low Quiescent Current: 90 μA
  • Zero Off-Mode Current
  • Fixed Output: 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.1 V, 3.3 V, 5.0 V. Adj. Output also available.
  • Available in RoHS Compliant, Lead Free Packages: 5 Pin SOT-23, 8 Pin Narrow SOIC and 8 pin 2X3 DFN


  • Battery Powered Systems
  • Cordless Phones
  • Radio Control Systems
  • Portable/Palm Top/Notebook Computers
  • Portable Consumer Equipment
  • Portable Instrumentation
  • Bar Code Scanners
  • SMPS Post Regulators
Pricing Section
Global Stock:
Factory Stock:Factory Stock:
Factory Lead Time:
52 Weeks
Minimum Order:
Multiple Of:
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Web Price
Product Variant Information section