Overview
The TL431CLPME3 is a precision programmable reference voltage regulator produced by Texas Instruments. This three-terminal adjustable shunt regulator is designed to provide a stable reference voltage, making it an excellent choice for various applications requiring precise voltage regulation. The device operates over a wide temperature range and offers adjustable output voltage, low output noise, and high thermal stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B Grade), 1% (A Grade), 2% (Standard Grade) | % |
| Adjustable Output Voltage | Vref to 36V | V |
| Operating Temperature Range | −40°C to 125°C | °C |
| Typical Temperature Drift | 6 mV (C Temp), 14 mV (I Temp, Q Temp) | mV |
| Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | TO-92 | - |
| Number of Pins | 3 | - |
| RoHS Compliance | Yes | - |
Key Features
- Adjustable Output Voltage: The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- Low Output Noise: The device features low output noise, making it suitable for applications requiring high signal integrity.
- High Thermal Stability: Operates over a wide temperature range from −40°C to 125°C with low temperature drift.
- Sharp Turn-On Characteristic: Active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Low Output Impedance: Typical output impedance of 0.2 Ω.
- Sink-Current Capability: Can sink current from 1 mA to 100 mA.
Applications
- On-Board Regulation: Suitable for onboard voltage regulation in various electronic systems.
- Adjustable Power Supplies: Used in adjustable power supplies and switching power supplies.
- Zener Replacement: Can replace Zener diodes in many applications due to its sharp turn-on characteristic.
- Voltage Monitoring: Used in voltage monitoring and comparator circuits with integrated references.
- Secondary Side Regulation in Flyback SMPSs: Applied in secondary side regulation of flyback switching mode power supplies.
- Rack Server Power, Industrial AC/DC, AC Inverter & VF Drives, Servo Drive Control Module, Notebook PC Power Adapter Design: Used in various industrial and consumer electronics applications.
Q & A
- What is the TL431CLPME3?
The TL431CLPME3 is a precision programmable reference voltage regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431CLPME3?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What is the operating temperature range of the TL431CLPME3?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431CLPME3?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431CLPME3?
The device can sink current from 1 mA to 100 mA.
- Is the TL431CLPME3 RoHS compliant?
- What package type does the TL431CLPME3 come in?
The device comes in a TO-92 package.
- What are some common applications of the TL431CLPME3?
Common applications include onboard regulation, adjustable power supplies, Zener replacement, voltage monitoring, and secondary side regulation in flyback SMPSs.
- How does the TL431CLPME3 compare to Zener diodes?
The TL431CLPME3 provides a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What is the reference voltage tolerance of the TL431CLPME3 at 25°C?
The reference voltage tolerance is 0.5% (B Grade), 1% (A Grade), and 2% (Standard Grade) at 25°C.
