Overview
The LM2931ADT50R is a very low drop voltage regulator produced by STMicroelectronics. It is designed for low noise, low power applications and is particularly suitable for battery-powered systems. This regulator features a very low dropout voltage and a low quiescent current, making it ideal for extending the useful life of batteries in various devices. The LM2931ADT50R is available in a DPAK package and includes a shutdown logic control function in the SO-8 configuration, allowing for part of the board to be put in standby, thereby reducing total power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Operating Input Voltage | 26 | V |
| Output Voltage (nominal) | 5 | V |
| Output Voltage Tolerance (typical) | ±5% | % |
| Output Current (nominal) | 0.1 A (100 mA) | A |
| Dropout Voltage (typical at 10 mA load) | 90 mV | mV |
| Quiescent Current (typical at 100 mA load) | 2.5 mA | mA |
| Operating Temperature Range | -40 to 125 °C | °C |
| Load Dump Protection | Up to 60 V | V |
| Reverse Transient Protection | Up to -50 V | V |
| Package | DPAK | |
| RoHS Compliance | Ecopack2 |
Key Features
- Very Low Dropout Voltage: 90 mV typical at 10 mA load.
- Low Quiescent Current: 2.5 mA typical at 100 mA load.
- Fixed Output Voltage: Available in 3.3 V and 5 V versions.
- Internal Current and Thermal Limit: Protects the device from overcurrent and overheating.
- Load Dump Protection: Up to 60 V and reverse transient protection up to -50 V.
- Shutdown Logic Control: Available in the SO-8 package, allowing for part of the board to be put in standby.
- AEC-Q100 Qualified: For the DPAK package, ensuring reliability in automotive applications.
- Wide Operating Temperature Range: From -40 to 125 °C.
Applications
The LM2931ADT50R is ideal for various applications, including:
- Automotive Systems: Due to its AEC-Q100 qualification and robust protection features against load dumps and reverse battery connections.
- Battery-Powered Devices: Extends battery life with its low dropout voltage and quiescent current.
- Industrial and Consumer Equipment: Suitable for low noise, low power applications where reliability and efficiency are crucial.
- Local Voltage Regulation: Can be used to regulate voltage locally on a board, reducing overall power consumption.
Q & A
- What is the typical dropout voltage of the LM2931ADT50R?
The typical dropout voltage is 90 mV at a 10 mA load.
- What is the maximum output current of the LM2931ADT50R?
The maximum output current is 100 mA.
- What are the available output voltage versions for the LM2931?
The LM2931 is available in fixed 3.3 V and 5 V output voltage versions.
- What is the operating temperature range of the LM2931ADT50R?
The operating temperature range is from -40 to 125 °C.
- Does the LM2931ADT50R have load dump protection?
- Is the LM2931ADT50R AEC-Q100 qualified?
- What package types are available for the LM2931?
The LM2931 is available in TO-92, DPAK, and SO-8 packages.
- Does the LM2931ADT50R have a shutdown logic control function?
- What is the quiescent current of the LM2931ADT50R?
The typical quiescent current is 2.5 mA at a 100 mA load.
- Is the LM2931ADT50R RoHS compliant?
