Overview
The LM2931CDR2G is a part of the LM2931 series of adjustable output, low dropout voltage regulators produced by onsemi. These regulators are designed to maintain proper regulation with an extremely low input-to-output voltage differential, making them ideal for battery-powered industrial and consumer equipment. They are capable of supplying output currents in excess of 100 mA and feature a low bias current of 0.4 mA at 10 mA output. The LM2931 series is particularly suited for harsh automotive environments, offering protection against 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 |
| Bias Current (IO = 10 mA, TA = 25°C) | 0.4 | mA |
| Dropout Voltage (IO = 10 mA) | 0.015 - 0.2 | V |
| Dropout Voltage (IO = 100 mA) | 0.16 - 0.6 | V |
| 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 |
| Output Noise Voltage (f = 10 Hz to 100 kHz) | 700 | μVrms |
| Operating Ambient Temperature Range | -40 to +125 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Package Type | SOIC-8 |
Key Features
- Low input-to-output voltage differential of < 0.6 V @ 100 mA
- Low bias current of 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
- Output inhibit pin for microprocessor-based systems
- High accuracy (±2.5%) reference voltage 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 load dump protection
- Industrial equipment where low dropout voltage is essential
Q & A
- What is the maximum output current of the LM2931CDR2G?
The LM2931CDR2G can supply output currents in excess of 100 mA.
- What is the input voltage range for the LM2931CDR2G?
The continuous input voltage is 40 Vdc, with transient input voltage up to 60 Vpk for ≤ 100 ms.
- What is the dropout voltage of the LM2931CDR2G?
The dropout voltage is 0.015 - 0.2 V at 10 mA output and 0.16 - 0.6 V at 100 mA output.
- Does the LM2931CDR2G have built-in protection features?
- What is the operating temperature range of the LM2931CDR2G?
- Is the LM2931CDR2G suitable for automotive applications?
- What package types are available for the LM2931CDR2G?
- Does the LM2931CDR2G have an output inhibit feature?
- How accurate is the reference voltage of the LM2931CDR2G?
- Can the LM2931CDR2G be used in battery-powered devices?
