Overview
The LF18ABDT-TR is a low dropout voltage regulator produced by STMicroelectronics. This device is part of the LFXX series and is specifically designed to provide a fixed output voltage of 1.8V with a maximum output current of 500mA. It is packaged in a TO-252-3 (DPAK) surface mount package, making it suitable for a variety of applications, particularly those requiring low noise and low power consumption, such as battery-powered systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (Min) | 2.5 | V |
| Input Voltage (Max) | 16 | V |
| Output Voltage (Fixed) | 1.8 | V |
| Dropout Voltage (Max) | 0.7 | V |
| Output Current (Max) | 500 | mA |
| Package Style | TO-252-3 (DPAK) | |
| Mounting Method | Surface Mount | |
| Operating Temperature Range | -40 to 125 | °C |
| Quiescent Current (Typ) | 50 µA (OFF mode), 500 µA (ON mode) | |
| Supply Voltage Rejection (PSRR) | 82 dB ~ 60 dB (120Hz ~ 10kHz) |
Key Features
- Very low dropout voltage (0.45 V)
- Very low quiescent current (typ. 50 µA in OFF mode, 500 µA in ON mode)
- Output current up to 500 mA
- Logic-controlled electronic shutdown
- Internal current and thermal limit
- Stability with only 2.2 µF capacitor
- Available in ± 1 % (AB) or ± 2 % (C) selection at 25 °C
- High supply voltage rejection (PSRR): 82 dB ~ 60 dB (120Hz ~ 10kHz)
Applications
The LF18ABDT-TR is particularly suitable for low-noise, low-power applications and especially in battery-powered systems. Its features make it ideal for use in various electronic devices that require stable and efficient voltage regulation.
- Battery-powered systems
- Low-power electronic devices
- Automotive applications (for specific voltage options)
Q & A
- What is the output voltage of the LF18ABDT-TR?
The output voltage of the LF18ABDT-TR is fixed at 1.8V.
- What is the maximum output current of the LF18ABDT-TR?
The maximum output current of the LF18ABDT-TR is 500 mA.
- What is the dropout voltage of the LF18ABDT-TR?
The dropout voltage of the LF18ABDT-TR is 0.7V (max).
- What is the operating temperature range of the LF18ABDT-TR?
The operating temperature range of the LF18ABDT-TR is -40 to 125 °C.
- What type of package does the LF18ABDT-TR come in?
The LF18ABDT-TR comes in a TO-252-3 (DPAK) surface mount package.
- Is the LF18ABDT-TR RoHS compliant?
Yes, the LF18ABDT-TR is RoHS compliant (Ecopack2).
- What are the key features of the LF18ABDT-TR?
The key features include very low dropout voltage, very low quiescent current, logic-controlled electronic shutdown, and internal current and thermal limits.
- What applications is the LF18ABDT-TR suitable for?
The LF18ABDT-TR is suitable for low-noise, low-power applications and especially in battery-powered systems.
- What is the quiescent current of the LF18ABDT-TR?
The quiescent current of the LF18ABDT-TR is typically 50 µA in OFF mode and 500 µA in ON mode.
- Does the LF18ABDT-TR have built-in protection features?
Yes, the LF18ABDT-TR has built-in overcurrent and overtemperature protection features.
