Overview
The TL431AFDT,215 is a three-terminal adjustable precision shunt regulator manufactured by Nexperia USA Inc. This component is part of the TL431 family and is known for its versatility and precision in voltage regulation. The TL431AFDT,215 allows for a programmable output voltage range between 2.495 V and 36 V, which can be set using two external resistors. It is AEC-Q100 qualified (grade 1), making it suitable for automotive and other demanding applications. The device is packaged in a SOT23 format, which is compact and ideal for space-saving designs.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Vref (Reference Voltage) | T = 25°C, IK = 10 mA | 2.470 | 2.495 | 2.520 | mV |
| VKA (Cathode-Anode Voltage) | 36 | V | |||
| IK (Cathode Current) | 1 | 100 | mA | ||
| Temperature Range (Tamb) | -40 | 125 | °C | ||
| Reference Voltage Tolerance | 1% | % | |||
| Typical Temperature Drift | 0°C to 70°C | 9 | mV | ||
| Typical Output Impedance | 0.2 | Ω |
Key Features
- Programmable Output Voltage: Up to 36 V, set by two external resistors.
- Reference Voltage Tolerances: Available in three grades: Standard (2%), A-Grade (1%), and B-Grade (0.5%).
- Low Output Noise: Ensures stable voltage regulation.
- Low Output Impedance: Typical output impedance of 0.2 Ω.
- Sink Current Capability: From 1 mA to 100 mA.
- AEC-Q100 Qualified: Grade 1, suitable for automotive and other demanding applications.
- Compact Packaging: SOT23 package, ideal for space-saving designs.
Applications
- Shunt Regulator: Used for precise voltage regulation.
- Precision Current Limiter: Limits current to a precise value.
- Precision Constant Current Sink: Provides a stable current sink.
- Isolated Feedback Loop for SMPS (Switch Mode Power Supply): Used in feedback loops for SMPS designs.
Q & A
- What is the TL431AFDT,215 used for?
The TL431AFDT,215 is used as a three-terminal adjustable precision shunt regulator, suitable for applications such as shunt regulation, precision current limiting, and precision constant current sinking.
- What is the output voltage range of the TL431AFDT,215?
The output voltage range of the TL431AFDT,215 is between 2.495 V and 36 V, set by two external resistors.
- What are the reference voltage tolerances available for the TL431AFDT,215?
The TL431AFDT,215 is available in three reference voltage tolerances: Standard (2%), A-Grade (1%), and B-Grade (0.5%).
- What is the typical temperature drift of the TL431AFDT,215?
The typical temperature drift of the TL431AFDT,215 is 9 mV over the range of 0°C to 70°C.
- What is the sink current capability of the TL431AFDT,215?
The sink current capability of the TL431AFDT,215 ranges from 1 mA to 100 mA.
- Is the TL431AFDT,215 AEC-Q100 qualified?
Yes, the TL431AFDT,215 is AEC-Q100 qualified (grade 1), making it suitable for automotive and other demanding applications.
- What is the package type of the TL431AFDT,215?
The TL431AFDT,215 is packaged in a SOT23 format.
- Is the TL431AFDT,215 compliant with environmental regulations?
Yes, the TL431AFDT,215 is compliant with EU RoHS, CN RoHS, and ELV directives, and does not contain REACH SVHC substances or PFAS.
- What are some common applications of the TL431AFDT,215?
Common applications include shunt regulation, precision current limiting, precision constant current sinking, and isolated feedback loops for Switch Mode Power Supplies (SMPS)).
- How can I obtain the TL431AFDT,215?
The TL431AFDT,215 can be ordered through Nexperia's sales organization or via their network of global and regional distributors.
