Overview
The LF50ABV-DG is a very low-dropout voltage regulator with inhibit, produced by STMicroelectronics. This component is designed to provide stable voltage regulation with minimal dropout voltage, making it suitable for a variety of applications requiring efficient power management. The LF50ABV-DG is available in a TO-220 package and is RoHS compliant, adhering to Ecopack2 standards for environmental sustainability.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Input Voltage | 2.5 | 16 | V | |
| Output Voltage (IO = 50 mA, VI = 7 V) | 4.95 | 5 | 5.05 | V |
| Output Current Limit | 1 | A | ||
| Dropout Voltage (IO = 200 mA) | 0.2 | 1.3 | V | |
| Dropout Voltage (IO = 500 mA) | 0.4 | 1.3 | V | |
| Quiescent Current (ON mode, IO = 0 mA) | 0.5 | 2 | mA | |
| Quiescent Current (OFF mode, VI = 6 V) | 50 | 120 | µA | |
| Line Regulation (VI = 6 to 16 V, IO = 5 mA) | 5 | 28 | mV | |
| Load Regulation (VI = 6.3 V, IO = 5 to 500 mA) | 5 | 28 | mV | |
| Supply Voltage Rejection (IO = 5 mA, VI = 7 ± 1 V) | 76 | dB @ 120 Hz | ||
| Output Noise Voltage (B = 10 Hz to 100 kHz) | 50 | µV | ||
| Control Input Logic Low | 0.8 | V | ||
| Control Input Logic High | 2 | V | ||
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- Very Low Dropout Voltage: The LF50ABV-DG features a very low dropout voltage of 0.2 to 1.3 V at 200 mA and 0.4 to 1.3 V at 500 mA, ensuring efficient voltage regulation.
- Low Quiescent Current: The component has a low quiescent current of 0.5 to 2 mA in ON mode and 50 to 120 µA in OFF mode, contributing to power efficiency.
- High Output Current: It can supply up to 500 mA of output current, making it suitable for various power-intensive applications.
- Good Line and Load Regulation: The regulator offers good line and load regulation, with line regulation of 5 to 28 mV and load regulation of 5 to 28 mV.
- High Supply Voltage Rejection: It has a high supply voltage rejection ratio, ensuring stable output voltage despite input voltage variations.
- Low Output Noise Voltage: The output noise voltage is minimal, at 50 µV over the 10 Hz to 100 kHz bandwidth.
- Inhibit Function: The component includes an inhibit function, allowing for easy control of the output voltage.
- Wide Operating Temperature Range: It operates over a wide temperature range of -40 to 125 °C, making it suitable for harsh environments.
Applications
- Automotive Systems: Due to its robust specifications and wide operating temperature range, the LF50ABV-DG is well-suited for automotive applications.
- Industrial Power Supplies: It can be used in industrial power supplies where stable and efficient voltage regulation is crucial.
- Consumer Electronics: The component is also applicable in consumer electronics that require low dropout voltage and high current output.
- Medical Devices: Its low noise and high stability make it a good choice for medical devices that require precise voltage regulation.
Q & A
- What is the maximum operating temperature of the LF50ABV-DG?
The maximum operating temperature is 125 °C. - What is the minimum operating input voltage for the LF50ABV-DG?
The minimum operating input voltage is 2.5 V. - What is the maximum output current of the LF50ABV-DG?
The maximum output current is 1 A. - What is the typical dropout voltage at 500 mA output current?
The typical dropout voltage at 500 mA output current is 0.4 to 1.3 V. - What is the quiescent current in OFF mode?
The quiescent current in OFF mode is 50 to 120 µA. - Does the LF50ABV-DG have an inhibit function?
Yes, the LF50ABV-DG includes an inhibit function. - What is the output noise voltage of the LF50ABV-DG?
The output noise voltage is 50 µV over the 10 Hz to 100 kHz bandwidth. - What is the package type of the LF50ABV-DG?
The package type is TO-220. - Is the LF50ABV-DG RoHS compliant?
Yes, the LF50ABV-DG is RoHS compliant and adheres to Ecopack2 standards. - What are the typical applications of the LF50ABV-DG?
The typical applications include automotive systems, industrial power supplies, consumer electronics, and medical devices.
