Overview
The LM2931ADT-5.0G 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 of 0.4 mA at 10 mA output. The LM2931ADT-5.0G is specifically designed to survive in harsh automotive environments and protects external load circuitry from various input fault conditions, including reverse battery connection, two battery jump starts, and excessive line transients during load dump. It also includes internal current limiting, thermal shutdown, and temporary mirror-image protection.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Output Voltage | VO | V | 4.75 | 5.0 | 5.25 |
| Line Regulation | Regline | mV | - | 2.0 | - |
| Output Current | IO | mA | - | - | 100 |
| Bias Current | IB | mA | - | 0.4 | - |
| Input Voltage Range | Vin | V | 6.0 | - | 26 |
| Operating Temperature Range | TA | °C | -40 | - | 125 |
| Load Dump Protection | - | - | - | - | 60 V |
| Reverse Transient Protection | - | - | - | - | -50 V |
Key Features
- Low dropout voltage and bias current, making it ideal for battery-powered equipment.
- Internal current limiting and thermal shutdown for enhanced protection.
- Ability to withstand temporary power-up with mirror-image insertion.
- Protection against input fault conditions such as reverse battery connection, two battery jump starts, and excessive line transients during load dump.
- High accuracy output voltage with a tolerance of ±3.80%.
- Available in various packages including SOIC-8, DPAK, D2PAK, TO-220, and TO-92.
- Ultra-high power supply rejection ratio (PSRR) for stable output voltage.
Applications
- Battery-powered consumer products.
- Handheld instruments.
- Automotive systems requiring robust voltage regulation and protection.
- Industrial equipment where low dropout voltage and high current capability are necessary.
Q & A
- What is the output voltage of the LM2931ADT-5.0G?
The output voltage of the LM2931ADT-5.0G is 5.0 V with a tolerance of ±3.80%.
- What is the maximum output current of the LM2931ADT-5.0G?
The maximum output current is in excess of 100 mA.
- What are the key protection features of the LM2931ADT-5.0G?
The device includes internal current limiting, thermal shutdown, load dump protection up to 60 V, and reverse transient protection up to -50 V.
- What is the operating temperature range of the LM2931ADT-5.0G?
The operating temperature range is from -40°C to 125°C.
- What packages are available for the LM2931ADT-5.0G?
The device is available in SOIC-8, DPAK, D2PAK, TO-220, and TO-92 packages.
- What is the bias current of the LM2931ADT-5.0G at 10 mA output?
The bias current is 0.4 mA at 10 mA output.
- Is the LM2931ADT-5.0G suitable for automotive applications?
Yes, it is specifically designed to survive in harsh automotive environments.
- What is the input voltage range for the LM2931ADT-5.0G?
The input voltage range is from 6.0 V to 26 V.
- Does the LM2931ADT-5.0G have an output inhibit feature?
No, the output inhibit feature is available in the 'C' suffix adjustable output regulators, not in the fixed output version like the LM2931ADT-5.0G.
- What is the power supply rejection ratio (PSRR) of the LM2931ADT-5.0G?
The device has an ultra-high PSRR, typically around 90 dB.
