Overview
The LF50ABV-DG from STMicroelectronics is a very low drop voltage regulator designed for low-noise, low-power applications. This regulator is particularly suitable for battery-powered systems due to its low drop voltage of 0.45 V and low quiescent current. It is available in various packages, including TO-220, TO-220FP, DPAK, and PPAK, and offers a wide range of output voltages. The LF50ABV-DG is part of the LFXX series, known for its high performance and reliability in diverse operating conditions.
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 | A |
| Dropout Voltage (IO = 200 mA) | 0.2 | - | 0.35 V | V |
| Quiescent Current (ON mode, IO = 0 mA) | 0.5 | 1 | mA | |
| Quiescent Current (OFF mode) | 50 | - | 100 µA | |
| Operating Temperature Range | -40.0 | - | 125.0 | °C |
| Package Name | - | - | TO-220 | - |
| RoHS Compliant | - | - | Ecopack2 |
Key Features
- Very Low Dropout Voltage: 0.45 V, making it ideal for low-noise and low-power applications.
- Low Quiescent Current: Typical 50 µA in OFF mode and 500 µA in ON mode.
- High Output Current: Up to 500 mA.
- Wide Operating Temperature Range: From -40°C to 125°C.
- High Supply Voltage Rejection: Up to 76 dB at 120 Hz.
- Low Output Noise Voltage: 50 µV in the 10 Hz to 100 kHz band.
- Inhibit Function: Allows for control of the regulator's ON/OFF state.
Applications
The LF50ABV-DG is suitable for a variety of applications, including:
- Battery-Powered Systems: Due to its low quiescent current and low dropout voltage, it is ideal for battery-powered devices.
- Low-Noise and Low-Power Systems: Such as audio equipment, medical devices, and other sensitive electronic systems.
- Automotive Systems: The regulator's wide operating temperature range and robust performance make it suitable for automotive applications.
- Industrial and Consumer Electronics: Where reliable and efficient voltage regulation is required.
Q & A
- What is the typical dropout voltage of the LF50ABV-DG?
The typical dropout voltage is 0.45 V. - What is the maximum output current of the LF50ABV-DG?
The maximum output current is up to 500 mA. - What is the operating temperature range of the LF50ABV-DG?
The operating temperature range is from -40°C to 125°C. - Is the LF50ABV-DG RoHS compliant?
Yes, it is RoHS compliant with the Ecopack2 standard. - What is the quiescent current in ON mode for the LF50ABV-DG?
The quiescent current in ON mode is typically 1 mA. - Does the LF50ABV-DG have an inhibit function?
Yes, it has an inhibit function to control the regulator's ON/OFF state. - What is the supply voltage rejection of the LF50ABV-DG?
The supply voltage rejection is up to 76 dB at 120 Hz. - What is the output noise voltage of the LF50ABV-DG?
The output noise voltage is 50 µV in the 10 Hz to 100 kHz band. - In what packages is the LF50ABV-DG available?
The LF50ABV-DG is available in TO-220, TO-220FP, DPAK, and PPAK packages. - What are some common applications for the LF50ABV-DG?
Common applications include battery-powered systems, low-noise and low-power systems, automotive systems, and industrial and consumer electronics.
