Overview
The L4931CDT50-TR is a very low drop voltage regulator produced by STMicroelectronics. This component is part of the L4931 series, which is known for its very low dropout voltage and low quiescent current, making it highly suitable for low noise, low power applications, particularly in battery-powered systems. The L4931CDT50-TR is available in the DPAK package and offers a fixed output voltage of 5V with a maximum output current of 250 mA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (nom) | 5 | V |
| Output Tolerance (typ) | ±2% | |
| Output Current (nom) | 0.25 | A |
| Dropout Voltage | 0.4 | V |
| Quiescent Current (ON mode) | 600 µA | |
| Quiescent Current (OFF mode) | 50 µA | |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage Rejection (typ) | 70 dB at 1 kHz | |
| Package | DPAK | |
| Mounting | SMD |
Key Features
- Very low dropout voltage (0.4 V)
- Very low quiescent current (Typ. 50 µA in OFF mode, 600 µA in ON mode)
- Output current up to 250 mA
- Logic controlled electronic shutdown
- Internal current and thermal limit
- Only 2.2 µF capacitor required for stability
- Available in ± 1 % (AB) or 2 % (C) selection at 25 °C
- High supply voltage rejection (70 dB typ. for 5 V version)
Applications
The L4931CDT50-TR is particularly suitable for low noise, low power applications and especially in battery-powered systems. It is ideal for use in various industrial and automotive applications where low dropout voltage and low quiescent current are critical.
Q & A
- What is the output voltage of the L4931CDT50-TR?
The output voltage of the L4931CDT50-TR is 5V.
- What is the maximum output current of the L4931CDT50-TR?
The maximum output current is 250 mA.
- What is the dropout voltage of the L4931CDT50-TR?
The dropout voltage is 0.4 V.
- What is the quiescent current in ON and OFF modes?
The quiescent current is typically 600 µA in ON mode and 50 µA in OFF mode.
- What is the operating temperature range of the L4931CDT50-TR?
The operating temperature range is from -40 to 125 °C.
- What package is the L4931CDT50-TR available in?
The L4931CDT50-TR is available in the DPAK package.
- Does the L4931CDT50-TR have logic controlled shutdown?
- What is the supply voltage rejection of the L4931CDT50-TR?
The supply voltage rejection is typically 70 dB at 1 kHz.
- How much capacitance is required for stability?
Only 2.2 µF capacitor is required for stability.
- In what applications is the L4931CDT50-TR commonly used?
The L4931CDT50-TR is commonly used in low noise, low power applications, especially in battery-powered systems and various industrial and automotive applications.
