Overview
The LMV431BIMFX/NOPB from Texas Instruments is a precision 1.24 V adjustable shunt regulator designed for low-voltage operations. This component is part of the LMV431 series, which includes the LMV431, LMV431A, and LMV431B, each offering different initial tolerances. The LMV431B stands out with its 0.5% initial tolerance, making it highly precise for voltage regulation tasks. It operates within a wide adjustable range from 1.24 V to 30 V and is temperature compensated for the industrial temperature range, ensuring reliability across various environmental conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage | 1.24 | V |
| Initial Tolerance | ±0.5% | - |
| Adjustable Range | 1.24 V to 30 V | - |
| Operating Current | 55 µA | - |
| Output Impedance | 0.25 Ω | - |
| Temperature Coefficient | 39 PPM/°C (for LMV431AI) | - |
| Operating Temperature Range | -40°C to 85°C (Industrial), 0°C to 70°C (Commercial) | - |
| Package Type | SOT23 | - |
Key Features
- Low-voltage operation with a wide adjustable range from 1.24 V to 30 V.
- High precision with a 0.5% initial tolerance.
- Temperature compensated for the industrial temperature range.
- Low operational current of 55 µA.
- Low output impedance of 0.25 Ω.
- Fast turn-on response.
- Low cost and competitive pricing.
- Stable with capacitive loads greater than 10 nF and less than 50 pF.
Applications
- Low drop-out regulators (e.g., 3 V to 2.7 V).
- Error amplifiers in off-line switching regulators.
- Voltage detectors.
- Series regulators.
- Current sources or sinks.
- Voltage monitors.
- 3-V off-line switching regulators.
- Low dropout N-channel series regulators.
Q & A
- What is the reference voltage of the LMV431BIMFX/NOPB?
The reference voltage is 1.24 V.
- What is the initial tolerance of the LMV431BIMFX/NOPB?
The initial tolerance is ±0.5%.
- What is the adjustable voltage range of the LMV431BIMFX/NOPB?
The adjustable range is from 1.24 V to 30 V.
- What is the operational current of the LMV431BIMFX/NOPB?
The operational current is 55 µA.
- What is the output impedance of the LMV431BIMFX/NOPB?
The output impedance is 0.25 Ω.
- Is the LMV431BIMFX/NOPB temperature compensated?
Yes, it is temperature compensated for the industrial temperature range with a coefficient of 39 PPM/°C for the LMV431AI variant.
- What are the typical applications of the LMV431BIMFX/NOPB?
Applications include low drop-out regulators, error amplifiers in off-line switching regulators, voltage detectors, series regulators, current sources or sinks, and voltage monitors.
- What is the package type of the LMV431BIMFX/NOPB?
The package type is SOT23.
- Is the LMV431BIMFX/NOPB stable with capacitive loads?
Yes, it is typically stable with capacitive loads greater than 10 nF and less than 50 pF.
- What is the operating temperature range of the LMV431BIMFX/NOPB?
The operating temperature range is -40°C to 85°C for the industrial grade and 0°C to 70°C for the commercial grade.
