Overview
The LM2931AD50R is a very low dropout (LDO) linear voltage regulator produced by STMicroelectronics. This regulator is designed for low noise, low power applications and is particularly suitable for battery-powered systems. It features a very low dropout voltage and low quiescent current, making it ideal for extending the useful life of batteries in various devices. The LM2931AD50R is available in an 8-pin SO-8 package and includes a shutdown logic control function, which allows for part of the board to be put in standby mode, reducing total power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | STMicroelectronics | |
| Type of Integrated Circuit | Voltage Regulator | |
| Kind of Voltage Regulator | Fixed, LDO, Linear | |
| Output Voltage | 5 V | V |
| Output Current | 0.1 A (100 mA) | A |
| Dropout Voltage | 0.25 V (typ. 90 mV at 10 mA load) | V |
| Input Voltage Range | 6 to 26 V | V |
| Operating Temperature Range | -40 to 125 °C | °C |
| Package Type | SO-8 | |
| Mounting Type | Surface Mount | |
| Quiescent Current | Typ. 2.5 mA (at 100 mA load) | mA |
| Line Regulation | 30 mV | mV |
| Load Regulation | 50 mV | mV |
| Load Dump Protection | Up to 60 V | V |
| Reverse Transient Protection | Up to -50 V | V |
Key Features
- Very low dropout voltage (typ. 90 mV at 10 mA load)
- Low quiescent current (typ. 2.5 mA at 100 mA load)
- Output current up to 100 mA
- Fixed 5 V output voltage
- Internal current and thermal limit
- Load dump protection up to 60 V and reverse transient protection up to -50 V
- Shutdown logic control function for standby mode
- Wide operating temperature range: -40 to 125 °C
- Available in SO-8 package with inhibit control
Applications
The LM2931AD50R is ideal for various applications, including:
- Automotive systems: Protected from reverse battery installations and 2 battery jumps, and load dump protection up to 60 V.
- Battery-powered systems: Extends the useful life of batteries due to low dropout voltage and low quiescent current.
- Low noise, low power applications: Suitable for systems requiring minimal noise and power consumption.
- Microprocessor-based systems: The shutdown logic control function is useful for putting parts of the board in standby mode.
Q & A
- What is the output voltage of the LM2931AD50R?
The output voltage of the LM2931AD50R is 5 V.
- What is the maximum output current of the LM2931AD50R?
The maximum output current of the LM2931AD50R is 100 mA (0.1 A).
- What is the dropout voltage of the LM2931AD50R?
The dropout voltage of the LM2931AD50R is typically 90 mV at a 10 mA load.
- What is the operating temperature range of the LM2931AD50R?
The operating temperature range of the LM2931AD50R is -40 to 125 °C.
- What kind of protection does the LM2931AD50R offer?
The LM2931AD50R offers load dump protection up to 60 V and reverse transient protection up to -50 V.
- What is the quiescent current of the LM2931AD50R?
The quiescent current of the LM2931AD50R is typically 2.5 mA at a 100 mA load.
- What package types are available for the LM2931AD50R?
The LM2931AD50R is available in an SO-8 package.
- Is the LM2931AD50R suitable for automotive applications?
Yes, the LM2931AD50R is suitable for automotive applications due to its load dump and reverse transient protection features).
- Does the LM2931AD50R have a shutdown logic control function?
Yes, the LM2931AD50R has a shutdown logic control function, which allows for part of the board to be put in standby mode).
- What is the line regulation of the LM2931AD50R?
The line regulation of the LM2931AD50R is 30 mV).
- What is the load regulation of the LM2931AD50R?
The load regulation of the LM2931AD50R is 50 mV).
