Overview
The SPX3819M5-L-3-3/TR is a 3.3V, 500mA fixed output, surface mount low-dropout (LDO) linear voltage regulator from MaxLinear's SPX3819 series. This device is designed to provide a stable and low-noise output voltage, making it suitable for a variety of applications, particularly in battery-powered systems. The regulator features a low dropout voltage, high accuracy, and a very low quiescent current, which enhances its efficiency and reliability.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | MaxLinear |
| Part Number | SPX3819M5-L-3-3/TR |
| Package Style | SOT-23-5 (SOT-25) |
| Mounting Method | Surface Mount |
| 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 Temperature 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% |
| Power Supply Rejection Ratio (PSRR) | 70dB |
Key Features
- Low Noise: 40µV possible, ensuring minimal output noise.
- High Accuracy: Initial tolerance of less than 1% max.
- Reverse Battery Protection: Protects the device from reverse battery conditions.
- Low Dropout: Dropout voltage of 0.55V at full load.
- Low Quiescent Current: 90µA, reducing power consumption.
- Zero Off-Mode Current: Power consumption drops to nearly zero when disabled.
- Fixed Output: Available in various fixed output voltages (1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 5.0V) and adjustable output options.
- Reference Bypass Pin: For optimal low noise output performance.
- Thermal Shutdown and Current Limit: Enhances device reliability and safety.
- Logic Compatible ON/OFF Switched Input: Allows for easy control of the regulator.
- RoHS Compliant, Lead Free Packages: Available in 5-pin SOT-23, 8-pin Narrow SOIC, and 8-pin DFN packages.
Applications
- Battery Powered Systems: Ideal for cordless telephones, radio control systems, and portable computers.
- Portable Consumer Equipment: Suitable for handheld devices and other portable consumer electronics.
- Portable Instrumentation: Used in various portable measurement and testing devices.
- Bar Code Scanners: Provides stable voltage for barcode scanning equipment.
- SMPS Post Regulators: Can be used as post-regulators in Switch-Mode Power Supplies (SMPS).
Q & A
- What is the maximum output current of the SPX3819M5-L-3-3/TR?
The maximum output current is 0.5A (500mA).
- What is the input voltage range for the SPX3819M5-L-3-3/TR?
The input voltage range is from 2.5V to 16V.
- What is the dropout voltage of the SPX3819M5-L-3-3/TR?
The maximum dropout voltage is 0.55V.
- What is the quiescent current of the SPX3819M5-L-3-3/TR?
The quiescent current is 90µA.
- Does the SPX3819M5-L-3-3/TR have reverse battery protection?
- What is the operating temperature range of the SPX3819M5-L-3-3/TR?
The operating temperature range is from -40°C to +125°C.
- What is the power supply rejection ratio (PSRR) of the SPX3819M5-L-3-3/TR?
The PSRR is 70dB.
- Is the SPX3819M5-L-3-3/TR RoHS compliant?
- What are the available package styles for the SPX3819 series?
The SPX3819 series is available in 5-pin SOT-23, 8-pin Narrow SOIC, and 8-pin DFN packages.
- What is the typical application of the SPX3819M5-L-3-3/TR in battery-powered systems?
