Overview
The LE50ABD-TR is a very low-dropout voltage regulator produced by STMicroelectronics. This component is part of the LEXX series, known for its low-dropout voltage and low quiescent current, making it suitable for low-noise, low-power applications and battery-powered systems. The LE50ABD-TR is available in SO-8 and TO-92 packages and offers a range of features that enhance its performance and versatility.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 5 V | V |
| Maximum Output Current | 100 mA | mA |
| Regulator Type | Low Dropout Voltage | |
| Number of Outputs | 1 | |
| Dropout Voltage | 0.2 V (typ.), 0.4 V (max.) | V |
| Quiescent Current (ON mode) | 0.5 mA (typ.), 1 mA (max.) | mA |
| Quiescent Current (OFF mode) | 50 µA (typ.), 100 µA (max.) | µA |
| Operating Input Voltage | Up to 18 V | V |
| Temperature Range | -40 to 125 °C | °C |
| Supply Voltage Rejection | 76 dB (typ.) at 1 kHz | dB |
| Output Noise Voltage | 50 µV (typ.) from 10 Hz to 100 kHz | µV |
Key Features
- Very Low Dropout Voltage: The LE50ABD-TR features a very low dropout voltage of 0.2 V (typ.), making it ideal for applications where minimal voltage loss is crucial.
- Low Quiescent Current: The device has a low quiescent current of 0.5 mA (typ.) in ON mode and 50 µA (typ.) in OFF mode, which is beneficial for power-saving designs.
- High Supply Voltage Rejection: With a supply voltage rejection of 76 dB (typ.) at 1 kHz, this regulator provides stable output voltage despite input voltage variations.
- Internal Current and Thermal Limit: The regulator includes internal current and thermal limiting, ensuring safe operation under various conditions.
- Shutdown Logic Control: The SO-8 package includes a shutdown logic control (TTL compatible), allowing for part of the board to be put in standby mode to reduce total power consumption.
- Small Capacitor Requirement: Stability is achieved with a small 2.2 µF capacitor, reducing component size and cost.
Applications
The LE50ABD-TR is suitable for a variety of applications, including:
- Battery-Powered Systems: Its low quiescent current and low dropout voltage make it ideal for battery-powered devices where power efficiency is critical.
- Low-Noise Designs: The high supply voltage rejection and low output noise voltage ensure stable and clean power supply, which is essential for low-noise applications.
- Portable Electronics: The small package options and low power consumption make it a good fit for portable electronic devices.
- Industrial and Automotive Systems: The wide operating temperature range (-40 to 125 °C) and robust design make it suitable for industrial and automotive applications.
Q & A
- What is the output voltage of the LE50ABD-TR?
The output voltage of the LE50ABD-TR is 5 V.
- What is the maximum output current of the LE50ABD-TR?
The maximum output current of the LE50ABD-TR is 100 mA.
- What is the typical dropout voltage of the LE50ABD-TR?
The typical dropout voltage of the LE50ABD-TR is 0.2 V.
- What is the quiescent current in ON mode for the LE50ABD-TR?
The quiescent current in ON mode for the LE50ABD-TR is typically 0.5 mA.
- What is the operating temperature range of the LE50ABD-TR?
The operating temperature range of the LE50ABD-TR is -40 to 125 °C.
- Does the LE50ABD-TR have a shutdown logic control feature?
- What type of capacitor is required for stability, and what is its value?
A 2.2 µF capacitor is required for stability.
- What is the supply voltage rejection of the LE50ABD-TR at 1 kHz?
The supply voltage rejection of the LE50ABD-TR at 1 kHz is typically 76 dB.
- What are the package options available for the LE50ABD-TR?
The LE50ABD-TR is available in SO-8 and TO-92 packages.
- Is the LE50ABD-TR suitable for battery-powered systems?
