Overview
The LM2931ADT-5.0RKG is a linear low dropout (LDO) voltage regulator produced by onsemi. This device is part of the LM2931 series, which includes both fixed and adjustable output voltage regulators. The LM2931ADT-5.0RKG is specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential, making it ideal for applications requiring high efficiency and reliability.
Designed primarily for the harsh automotive environment, this regulator features robust protection mechanisms such as load dump protection, reverse transient protection, internal current limiting, and thermal shutdown. These features ensure the device can withstand various fault conditions and maintain stable output voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (Continuous) | 40 | Vdc |
| Transient Input Voltage (≤ 100 ms) | 60 | Vpk |
| Output Voltage (Fixed) | 5.0 | V |
| Output Current | 100 | mA |
| Dropout Voltage (IO = 10 mA) | 0.015 - 0.2 | V |
| Dropout Voltage (IO = 100 mA) | 0.16 - 0.6 | V |
| Bias Current (IO = 10 mA) | 0.4 - 1.0 | mA |
| Operating Ambient Temperature Range | -40 to +125 | °C |
| Thermal Resistance, Junction-to-Case | 5.0 | °C/W |
| Ripple Rejection (f = 120 Hz) | 60 - 90 | dB |
Key Features
- Low input-to-output voltage differential (< 0.6 V @ 100 mA)
- High output current capability (in excess of 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 and thermal shutdown
- Temporary mirror-image protection
- Economical 5-lead TO-220 package and surface mount options (SOP-8, D2PAK, DPAK)
- High accuracy reference voltage (±2.5% for LM2931AC)
- 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 voltage regulation
- Battery-powered industrial equipment where extended battery life is desirable
Q & A
- What is the maximum input voltage for the LM2931ADT-5.0RKG?
The maximum continuous input voltage is 40 Vdc, with transient input voltage up to 60 Vpk for ≤ 100 ms.
- What is the output voltage of the LM2931ADT-5.0RKG?
The output voltage is fixed at 5.0 V.
- What is the maximum output current of the LM2931ADT-5.0RKG?
The device can supply output currents in excess of 100 mA.
- What are the key protection features of the LM2931ADT-5.0RKG?
The device features 60 V load dump protection, -50 V reverse transient protection, internal current limiting, and thermal shutdown.
- What are the operating temperature ranges for the LM2931ADT-5.0RKG?
The operating ambient temperature range is -40 to +125 °C, and the storage temperature range is -65 to +150 °C.
- Is the LM2931ADT-5.0RKG suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive use.
- What package options are available for the LM2931ADT-5.0RKG?
The device is available in TO-220, SOP-8, D2PAK, and DPAK packages.
- What is the ripple rejection of the LM2931ADT-5.0RKG?
The ripple rejection at 120 Hz is between 60 and 90 dB.
- Can the LM2931ADT-5.0RKG be used in battery-powered devices?
Yes, it is ideally suited for battery-powered equipment due to its low dropout voltage and bias current specifications.
- Is the LM2931ADT-5.0RKG Pb-free?
Yes, Pb-free packages are available for this device.
