Overview
The SPX3819M5-L-3-3/TR is a 3.3V, 500mA fixed output, low-dropout (LDO) voltage regulator produced by MaxLinear, Inc. This device is part of the SPX3819 series and is known for its low noise output and high accuracy. It features a low dropout voltage, reverse battery protection, and a logic-compatible ON/OFF switched input. When disabled, the power consumption drops to nearly zero, making it highly efficient for battery-powered applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Input Voltage (Min) | 2.5 | V |
| Input Voltage (Max) | 16 | V |
| Output Voltage Fixed | 3.3 | V |
| Dropout Voltage (Max) | 0.55 | V |
| Output Current (Max) | 500 | mA |
| 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 |
Key Features
- Low Noise: 40 µV possible, making it suitable for applications requiring low noise output.
- High Accuracy: Initial tolerance of less than 1% max.
- Reverse Battery Protection: Protects the device from reverse battery conditions.
- Low Dropout Voltage: 340 mV at full load.
- Low Quiescent Current: 90 µA, reducing power consumption.
- Zero Off-Mode Current: Power consumption drops to nearly zero when disabled.
- Fixed Output Voltages: Available in fixed output voltages of 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.1 V, 3.3 V, and 5.0 V, as well as adjustable output options.
- Reference Bypass Pin: For optimal low noise output performance.
- Thermal Shutdown and Current Limit: Protects the device from overheating and overcurrent conditions.
- RoHS Compliant and Lead-Free Packages: Available in 5-pin SOT-23, 8-pin NSOIC, and 8-pin DFN packages.
Applications
- Battery Powered Systems: Ideal for cordless telephones, radio control systems, and portable computers.
- Portable Consumer Equipment: Suitable for palm top, notebook computers, and other portable devices.
- Portable Instrumentation: Used in bar code scanners and other portable instrumentation.
- SMPS Post Regulators: Can be used as post-regulators in switch-mode power supplies.
Q & A
- Q: What is the maximum input voltage for the SPX3819M5-L-3-3/TR?
A: The maximum input voltage is 16V. - Q: What is the output current capability of the SPX3819M5-L-3-3/TR?
A: The maximum output current is 500mA. - Q: What is the dropout voltage of the SPX3819M5-L-3-3/TR?
A: The maximum dropout voltage is 0.55V. - Q: What is the operating temperature range for the SPX3819M5-L-3-3/TR?
A: The operating temperature range is -40°C to +125°C. - Q: Does the SPX3819M5-L-3-3/TR have reverse battery protection?
A: Yes, it includes reverse battery protection. - Q: What is the quiescent current of the SPX3819M5-L-3-3/TR?
A: The quiescent current is 90µA. - Q: Can the SPX3819M5-L-3-3/TR be used in battery-powered applications?
A: Yes, it is an excellent choice for battery-powered applications due to its low dropout voltage and low noise output. - Q: What package styles are available for the SPX3819M5-L-3-3/TR?
A: It is available in 5-pin SOT-23, 8-pin NSOIC, and 8-pin DFN packages. - Q: Does the SPX3819M5-L-3-3/TR have thermal shutdown protection?
A: Yes, it includes thermal shutdown protection. - Q: Is the SPX3819M5-L-3-3/TR RoHS compliant?
A: Yes, it is RoHS compliant and lead-free.
