Overview
The LM2931D-5.0R2G is a positive fixed output low dropout (LDO) linear voltage regulator from onsemi. This device is part of the LM2931 series, which is designed to maintain proper regulation with an extremely low input-to-output voltage differential. It is capable of supplying output currents in excess of 100 mA and features a low bias current, making it ideal for battery-powered equipment and harsh automotive environments. The LM2931D-5.0R2G provides robust protection against input fault conditions such as reverse battery connection, two battery jump starts, and excessive line transients during load dump.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (Continuous) | 40 | Vdc |
| Transient Input Voltage (≤ 100 ms) | 60 | Vpk |
| Output Current | 100 | mA |
| Output Voltage (Fixed) | 5.0 | V |
| Dropout Voltage (IO = 10 mA) | 0.015 - 0.2 | V |
| Dropout Voltage (IO = 100 mA) | 0.16 - 0.6 | V |
| Bias Current (Vin = 14 V, IO = 10 mA) | 0.4 | mA |
| Line Regulation (Vin = 9.0 V to 16 V) | -2.0 to 10 | mV |
| Load Regulation (IO = 5.0 mA to 100 mA) | -14 to 50 | mV |
| Operating Ambient Temperature Range | -40 to +125 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Thermal Resistance, Junction-to-Case | 5.0 | °C/W |
| Thermal Resistance, Junction-to-Ambient | 70 | °C/W |
Key Features
- Extremely low input-to-output voltage differential (< 0.6 V @ 100 mA)
- Low bias current (0.4 mA at 10 mA output)
- 60 V load dump protection and -50 V reverse transient protection
- Internal current limiting with thermal shutdown
- Temporary mirror-image protection
- Ideally suited for battery-powered industrial and consumer equipment
- High accuracy (±2.5%) reference available
- AEC-Q100 qualified and PPAP capable for automotive applications
- Pb-free packages available
Applications
- Battery-powered consumer products
- Hand-held instruments
- Camcorders and cameras
- Automotive systems requiring robust protection against input fault conditions
- Industrial equipment where low dropout voltage and low bias current are essential
Q & A
- What is the maximum output current of the LM2931D-5.0R2G?
The LM2931D-5.0R2G can supply output currents in excess of 100 mA. - What is the typical output voltage of the LM2931D-5.0R2G?
The typical output voltage is 5.0 V. - What kind of protection does the LM2931D-5.0R2G offer against input faults?
The device offers protection against reverse battery connection, two battery jump starts, and excessive line transients during load dump. - What is the dropout voltage at 100 mA output current?
The dropout voltage at 100 mA output current is between 0.16 V and 0.6 V. - Is the LM2931D-5.0R2G suitable for automotive applications?
Yes, it is designed to survive in harsh automotive environments and is AEC-Q100 qualified. - What is the operating ambient temperature range of the LM2931D-5.0R2G?
The operating ambient temperature range is -40°C to +125°C. - Does the LM2931D-5.0R2G have internal current limiting and thermal shutdown?
Yes, it features internal current limiting with thermal shutdown. - What is the thermal resistance, junction-to-case, for the LM2931D-5.0R2G?
The thermal resistance, junction-to-case, is 5.0°C/W. - Is the LM2931D-5.0R2G available in Pb-free packages?
Yes, Pb-free packages are available. - What is the line regulation of the LM2931D-5.0R2G?
The line regulation is -2.0 to 10 mV for Vin = 9.0 V to 16 V.
