Overview
The LMV431AIMFX is a low-voltage, adjustable precision shunt regulator produced by Texas Instruments. This device is part of the LMV431 family, which includes the LMV431, LMV431A, and LMV431B. It operates with a wide adjust range from 1.24 V to 30 V, making it versatile for various applications requiring zener diode type performance at low voltages. The LMV431AIMFX is designed to provide high precision and stability, with an initial tolerance of 1% and temperature compensation for industrial temperature ranges.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Operating Temperature | -40 | 85 | °C |
| Lead Temperature (Soldering, 10 sec.) | - | 265 | °C |
| Internal Power Dissipation (TO-92 Package) | - | 0.78 | W |
| Internal Power Dissipation (SOT-23-5, -3 Package) | - | 0.28 | W |
| Cathode Voltage | - | 35 | V |
| Continuous Cathode Current | -30 | 30 | mA |
| Reference Input Current | -0.05 | 3 | μA |
| Minimum Cathode Current for Regulation | 55 | 80 | μA |
| Off-State Current | 0.001 | 0.1 | μA |
| Dynamic Output Impedance | 0.25 | 0.4 | Ω |
Key Features
- Low-Voltage Operation with a wide adjust range from 1.24 V to 30 V
- 1% Initial Tolerance for the LMV431A and 0.5% for the LMV431B
- Temperature Compensated for Industrial Temperature Range (39 PPM/°C for the LMV431AI)
- Low Operation Current of 55 µA
- Low Output Impedance of 0.25 Ω
- Fast Turn-On Response
- Low Cost
Applications
- Shunt Regulator
- Series Regulator
- Current Source or Sink
- Voltage Monitor
- Error Amplifier in a 3 V off-line switching regulator
- 3 V to 2.7 V low drop-out regulator
- Voltage Detector
Q & A
- What is the operating voltage range of the LMV431AIMFX?
The LMV431AIMFX operates with a voltage range from 1.24 V to 30 V.
- What is the initial tolerance of the LMV431AIMFX?
The LMV431AIMFX has an initial tolerance of 1%.
- What is the typical operating current of the LMV431AIMFX?
The typical operating current is 55 µA.
- What is the dynamic output impedance of the LMV431AIMFX?
The dynamic output impedance is between 0.25 Ω and 0.4 Ω.
- What are the common applications of the LMV431AIMFX?
Common applications include shunt regulators, series regulators, current sources or sinks, voltage monitors, error amplifiers, and voltage detectors.
- Is the LMV431AIMFX temperature compensated?
Yes, it is temperature compensated for industrial temperature ranges with a temperature coefficient of 39 PPM/°C for the LMV431AI.
- What is the package type and pin count of the LMV431AIMFX?
The LMV431AIMFX comes in a SOT-23 (DBZ) package with 3 pins.
- Is the LMV431AIMFX RoHS compliant?
Yes, the LMV431AIMFX is RoHS compliant.
- What is the stability condition for capacitive loads?
The device is typically stable with capacitive loads greater than 10 nF and less than 50 pF.
- Is the LMV431AIMFX still in production?
No, the LMV431AIMFX is obsolete and no longer manufactured by Texas Instruments.
