Overview
The LF50CDT-TR, produced by STMicroelectronics, is a very low-dropout voltage regulator designed for low-noise, low-power applications. This regulator is particularly suited for battery-powered systems due to its low drop voltage (0.45 V) and low quiescent current. It is available in various packages, including DPAK, TO-220, TO-220FP, and PPAK, and offers a range of output voltages. The LF50CDT-TR is known for its high performance in automotive and industrial environments, with an operating temperature range from -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Min | -40.0 | °C |
| Operating Temperature Max | 125.0 | °C |
| Input Voltage Min | 3 | V |
| Input Voltage Max | 16 | V |
| Output Voltage (Nominal) | 5 | V |
| Output Current | Up to 500 mA | A |
| Dropout Voltage | 0.45 V (typical) | V |
| Quiescent Current (ON mode) | 500 µA (typical) | A |
| Quiescent Current (OFF mode) | 50 µA (typical) | A |
| Package Name | DPAK | |
| Rohs Compliant | Ecopack2 | |
| Grade | Industrial |
Key Features
- Very Low Dropout Voltage: 0.45 V typical, making it suitable for low-noise and low-power applications.
- Low Quiescent Current: 500 µA in ON mode and 50 µA in OFF mode, ideal for battery-powered systems.
- High Output Current: Up to 500 mA.
- Broad Operating Temperature Range: From -40°C to 125°C.
- Multiple Package Options: Available in DPAK, TO-220, TO-220FP, and PPAK packages.
- High Supply Voltage Rejection: Ensures stable output voltage despite input voltage variations.
- Low Output Noise Voltage: 50 µV typical, contributing to low noise operation.
Applications
- Battery-Powered Systems: Ideal for devices that require low power consumption and stable voltage regulation.
- Automotive Systems: Suitable for automotive applications due to its wide operating temperature range and robust performance.
- Industrial Control Systems: Used in various industrial control systems where reliable and stable voltage regulation is crucial.
- Consumer Electronics: Applicable in consumer electronics that require low noise and efficient power management.
Q & A
- What is the typical dropout voltage of the LF50CDT-TR?
The typical dropout voltage is 0.45 V.
- What is the maximum output current of the LF50CDT-TR?
The maximum output current is up to 500 mA.
- What are the operating temperature ranges for the LF50CDT-TR?
The operating temperature range is from -40°C to 125°C.
- What are the package options available for the LF50CDT-TR?
The LF50CDT-TR is available in DPAK, TO-220, TO-220FP, and PPAK packages.
- Is the LF50CDT-TR RoHS compliant?
- What is the quiescent current in ON and OFF modes?
The quiescent current is 500 µA in ON mode and 50 µA in OFF mode.
- What is the input voltage range for the LF50CDT-TR?
The input voltage range is from 3 V to 16 V.
- What is the typical output noise voltage of the LF50CDT-TR?
The typical output noise voltage is 50 µV.
- What are some common applications of the LF50CDT-TR?
- What is the thermal resistance junction-case for the DPAK package?
The thermal resistance junction-case for the DPAK package is 8 °C/W.
