Overview
The L4931CDT33-TR is a very low drop voltage regulator produced by STMicroelectronics. This regulator is part of the L4931 series, which is known for its very low dropout voltage and low quiescent current, making it particularly suitable for low noise, low power applications, especially in battery-powered systems. The L4931CDT33-TR is available in a DPAK package and offers a fixed output voltage of 3.3V with an output current up to 250 mA. It features a TTL compatible shutdown logic control, allowing for part of the board to be put in standby mode to decrease total power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Type of Integrated Circuit | Voltage Regulator |
| Kind of Voltage Regulator | Fixed, LDO, Linear |
| Voltage Drop | 0.4 V |
| Output Voltage | 3.3 V |
| Output Current | 0.25 A (250 mA) |
| Case | DPAK |
| Mounting | SMD |
| Operating Temperature | -40°C to 125°C |
| Tolerance | ±2% |
| Number of Channels | 1 |
| Input Voltage | 4 V to 20 V |
| Packing Type | Tape and Reel |
| RoHS Compliance | Ecopack2 |
| Grade | Industrial |
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
- Supply voltage rejection: 70 dB typ. for 5 V version
Applications
The L4931CDT33-TR is particularly suited for low noise, low power applications and is especially useful in battery-powered systems. It is also applicable in various industrial and automotive environments where low dropout voltage and low quiescent current are critical. Other potential applications include local voltage regulation in larger systems where part of the board can be put in standby mode to reduce power consumption.
Q & A
- What is the output voltage of the L4931CDT33-TR?
The output voltage of the L4931CDT33-TR is 3.3 V.
- What is the maximum output current of the L4931CDT33-TR?
The maximum output current of the L4931CDT33-TR is 250 mA.
- What is the operating temperature range of the L4931CDT33-TR?
The operating temperature range of the L4931CDT33-TR is from -40°C to 125°C.
- What type of package does the L4931CDT33-TR come in?
The L4931CDT33-TR comes in a DPAK package.
- Does the L4931CDT33-TR have a shutdown feature?
Yes, the L4931CDT33-TR features a TTL compatible shutdown logic control.
- What is the input voltage range for the L4931CDT33-TR?
The input voltage range for the L4931CDT33-TR is from 4 V to 20 V.
- Is the L4931CDT33-TR RoHS compliant?
Yes, the L4931CDT33-TR is RoHS compliant with an Ecopack2 designation.
- What is the typical quiescent current of the L4931CDT33-TR in ON mode?
The typical quiescent current of the L4931CDT33-TR in ON mode is 600 µA.
- How much capacitance is required for stability?
Only 2.2 µF capacitance is required for stability.
- What are the tolerance options for the L4931 series?
The L4931 series is available in ±1% (AB) or ±2% (C) selection at 25°C.
