Overview
The STMicroelectronics LF25CDT-TR is a low-dropout linear voltage regulator designed to provide a stable output voltage of 2.5V. This regulator is part of the LF25 series and is packaged in a DPAK (TO-252) package, making it suitable for a variety of applications requiring compact and efficient power management. The LF25CDT-TR features an inhibition function, allowing for external control over the regulator's operation. It is RoHS compliant, ensuring environmental sustainability.
Key Specifications
| Parameter | Description | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Output Voltage | Fixed Output Voltage | 2.475 | 2.5 | 2.525 | V |
| Operating Input Voltage | Voltage Range | 2.5 | - | 16 | V |
| Output Current | Maximum Output Current | - | - | 500 mA | mA |
| Dropout Voltage | Voltage Drop at 200 mA | 0.2 | - | 0.7 | V |
| Quiescent Current | Current in ON Mode | 0.5 | - | 2 | mA |
| Quiescent Current (OFF Mode) | Current in OFF Mode | 50 | - | 100 | µA |
| Line Regulation | Voltage Regulation Over Input Range | 2 | - | 15 | mV |
| Load Regulation | Voltage Regulation Over Load Range | 2 | - | 15 | mV |
| Supply Voltage Rejection | PSRR at 120 Hz, 1 kHz, 10 kHz | 82 dB, 77 dB, 65 dB | - | - | dB |
| Output Noise Voltage | Noise Voltage (10 Hz to 100 kHz) | - | - | 50 | µV |
| Control Input Logic Levels | Logic Low and High Levels | 0.8 V, 2 V | - | - | V |
| Output Bypass Capacitance | Recommended Capacitance Range | 2 | - | 10 | µF |
Key Features
- Low Dropout Voltage: The LF25CDT-TR features a very low dropout voltage of 0.45 V, ensuring minimal voltage loss and high efficiency.
- Low Quiescent Current: The regulator has a low quiescent current of 50 µA in OFF mode and 500 µA in ON mode, which helps in reducing power consumption.
- High Output Current: It can supply up to 500 mA of output current, making it suitable for a wide range of applications.
- Inhibition Function: The regulator includes an inhibition function, allowing external control over its operation, which is useful for system power management.
- Good Line and Load Regulation: The LF25CDT-TR offers excellent line and load regulation, ensuring stable output voltage across various input and load conditions.
- Low Output Noise: The regulator has a low output noise voltage of 50 µV (10 Hz to 100 kHz), which is crucial for noise-sensitive applications.
- Wide Operating Temperature Range: It operates over a temperature range of -40°C to 125°C, making it suitable for harsh environmental conditions.
Applications
- Industrial Automation: The LF25CDT-TR can be used in industrial automation systems where stable and efficient power supply is critical.
- Automotive Systems: Its robustness and wide operating temperature range make it suitable for automotive applications.
- Consumer Electronics: It can be used in various consumer electronics such as audio equipment, medical devices, and other portable electronics.
- Telecommunications: The regulator is also applicable in telecommunications equipment where reliable power supply is essential.
- Embedded Systems: It is a good choice for embedded systems that require a compact and efficient power management solution.
Q & A
- What is the output voltage of the LF25CDT-TR?
The output voltage of the LF25CDT-TR is fixed at 2.5V.
- What is the maximum output current of the LF25CDT-TR?
The maximum output current of the LF25CDT-TR is 500 mA.
- What is the dropout voltage of the LF25CDT-TR?
The dropout voltage of the LF25CDT-TR is typically 0.45 V.
- What is the quiescent current in ON mode for the LF25CDT-TR?
The quiescent current in ON mode for the LF25CDT-TR is typically 500 µA.
- Does the LF25CDT-TR have an inhibition function?
Yes, the LF25CDT-TR includes an inhibition function for external control over its operation.
- What is the operating temperature range of the LF25CDT-TR?
The operating temperature range of the LF25CDT-TR is -40°C to 125°C.
- What is the recommended output bypass capacitance for the LF25CDT-TR?
The recommended output bypass capacitance for the LF25CDT-TR is between 2 µF and 10 µF.
- Is the LF25CDT-TR RoHS compliant?
Yes, the LF25CDT-TR is RoHS compliant.
- What is the package type of the LF25CDT-TR?
The package type of the LF25CDT-TR is DPAK (TO-252).
- What are some typical applications of the LF25CDT-TR?
The LF25CDT-TR is typically used in industrial automation, automotive systems, consumer electronics, telecommunications, and embedded systems.
