Overview
The TL431MFDT is an adjustable precision shunt regulator produced by NXP USA Inc. This three-terminal device is part of the TL431 family and is known for its versatility and precision in voltage regulation. The TL431MFDT can be programmed to output a voltage between 2.495 V and 36 V using two external resistors, making it highly adaptable for various applications. It is packaged in a SOT23 package, which is compact and suitable for surface mount technology (SMT) assembly. The device is AEC-Q100 qualified (grade 1), ensuring its reliability in automotive and other demanding environments.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | TL431MFDT |
| Package | SOT23 |
| Reference Voltage (Vref) | 2.495 V |
| Output Voltage Range | 2.495 V to 36 V |
| Reference Voltage Tolerance | ±2% |
| Temperature Range (T amb) | -40°C to 125°C |
| Output Current Capability | 1 mA to 100 mA |
| Typical Output Impedance | 0.2 Ω |
| Typical Temperature Drift | 9 mV (0°C to 70°C) |
| Pinning Configuration | Mirrored pinning |
| AEC-Q100 Qualification | Grade 1 |
Key Features
- Programmable output voltage up to 36 V using two external resistors.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink current capability from 1 mA to 100 mA.
- AEC-Q100 qualified (grade 1) for automotive and other demanding applications.
- Compact SOT23 package suitable for surface mount technology (SMT) assembly.
- Isolated feedback loop for Switch Mode Power Supply (SMPS) applications.
- Precision current limiter and precision constant current sink capabilities.
Applications
The TL431MFDT is versatile and can be used in a variety of applications, including:
- Automotive systems: Due to its AEC-Q100 qualification, it is suitable for use in automotive electronics.
- Industrial control systems: For precise voltage regulation in industrial environments.
- Power supplies: Especially in Switch Mode Power Supplies (SMPS) where isolated feedback loops are necessary.
- Consumer electronics: For applications requiring precise and adjustable voltage regulation.
- Medical devices: Where precise voltage control is critical.
Q & A
- What is the TL431MFDT?
The TL431MFDT is an adjustable precision shunt regulator produced by NXP USA Inc. - What is the output voltage range of the TL431MFDT?
The output voltage range is between 2.495 V and 36 V, set by two external resistors. - What is the reference voltage tolerance of the TL431MFDT?
The reference voltage tolerance is ±2%. - What is the operating temperature range of the TL431MFDT?
The operating temperature range is -40°C to 125°C. - What is the typical output impedance of the TL431MFDT?
The typical output impedance is 0.2 Ω. - Is the TL431MFDT AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified (grade 1). - What package type does the TL431MFDT use?
The TL431MFDT is packaged in a SOT23 package. - What are some common applications of the TL431MFDT?
Common applications include automotive systems, industrial control systems, power supplies, consumer electronics, and medical devices. - What is the sink current capability of the TL431MFDT?
The sink current capability ranges from 1 mA to 100 mA. - Does the TL431MFDT have isolated feedback loop capabilities?
Yes, it has isolated feedback loop capabilities suitable for Switch Mode Power Supplies (SMPS).
