Overview
The LM2931Z-5.0G, produced by onsemi, is a high-performance, adjustable output voltage regulator designed to operate in harsh environments, particularly in automotive and industrial applications. This regulator is part of the LM2931 series, which includes fixed and adjustable output voltage regulators. It is known for its low input-to-output voltage differential, high accuracy, and robust protection features such as load dump protection, reverse transient protection, and thermal shutdown.
The device is suitable for battery-powered equipment where extending battery life is crucial. It features a low bias current and low dropout voltage, making it ideal for consumer and industrial devices that require reliable voltage regulation.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Continuous | VI | - | - | 40 | Vdc |
| Transient Input Voltage (≤ 100 ms) | VI(τ) | - | - | 60 | Vpk |
| Output Voltage (Fixed Output, Vin = 14 V, IO = 10 mA, TA = 25°C) | VO | 4.75 | 5.0 | 5.25 | V |
| Output Current | IO | - | - | 100 | mA |
| Bias Current (Vin = 14 V, IO = 10 mA, TA = 25°C) | IB | - | 0.4 | 1.0 | mA |
| Dropout Voltage (IO = 10 mA) | VI-VO | 0.015 | - | 0.2 | V |
| Line Regulation (Vin = 9.0 V to 16 V) | Regline | -2.0 | 10 | -2.0 | mV |
| Load Regulation (IO = 5.0 mA to 100 mA) | Regload | -14 | 50 | -14 | mV |
| Output Noise Voltage (f = 10 Hz to 100 kHz) | Vn | - | - | 700 | μVrms |
| Ripple Rejection (f = 120 Hz) | RR | 60 | 90 | - | dB |
Key Features
- Low input-to-output voltage differential of less than 0.6 V at 100 mA
- Output current in excess of 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
- High accuracy reference voltage (±2.5%) available
- Economical 5-lead TO-220 package and surface mount options (SOP-8, D2PAK, DPAK)
- 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
- Industrial equipment where low dropout voltage and high accuracy are necessary
Q & A
- What is the maximum input voltage for the LM2931Z-5.0G?
The maximum continuous input voltage is 40 Vdc, with transient input voltage up to 60 Vpk for ≤ 100 ms.
- What is the output current capability of the LM2931Z-5.0G?
The device can supply output currents in excess of 100 mA.
- What are the key protection features of the LM2931Z-5.0G?
The device features 60 V load dump protection, -50 V reverse transient protection, internal current limiting, and thermal shutdown.
- What is the dropout voltage of the LM2931Z-5.0G?
The dropout voltage is 0.015 V to 0.2 V at 10 mA output current and 0.16 V to 0.6 V at 100 mA output current.
- Is the LM2931Z-5.0G suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive use.
- What are the available package options for the LM2931Z-5.0G?
The device is available in 5-lead TO-220, SOP-8, D2PAK, and DPAK packages.
- How accurate is the reference voltage of the LM2931Z-5.0G?
The reference voltage accuracy is ±2.5% for the LM2931AC and NCV2931AC models.
- Can the LM2931Z-5.0G be used in battery-powered devices?
Yes, it is ideally suited for battery-powered equipment due to its low bias current and low dropout voltage.
- What is the ripple rejection of the LM2931Z-5.0G?
The ripple rejection is 60 dB to 90 dB at 120 Hz.
- How does the LM2931Z-5.0G handle output noise?
The output noise voltage is 700 μVrms from 10 Hz to 100 kHz.
