Overview
The TL431CLPM is a three-terminal adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, known for their specified thermal stability over a wide range of temperatures, including automotive, commercial, and military environments. The device allows for adjustable output voltage between approximately 2.5V (Vref) and 36V using two external resistors. This makes it an excellent replacement for Zener diodes in various applications, such as on-board regulation, adjustable power supplies, and switching power supplies.
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 (LP) | - |
| Pins | 3 | - |
| Package Quantity | 2000 (Ammo) | - |
Key Features
- Reference voltage tolerance at 25°C: 0.5% (B grade), 1% (A grade), 2% (Standard grade).
- Adjustable output voltage: Vref to 36V.
- Operation from −40°C to 125°C.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability: 1 mA to 100 mA.
- Active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- Rack server power.
- Industrial AC/DC power supplies.
- AC inverter and VF drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
Q & A
- What is the TL431CLPM?
The TL431CLPM is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431CLPM?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What are the temperature ranges for the TL431CLPM?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431CLPM?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431CLPM?
The sink-current capability ranges from 1 mA to 100 mA.
- What are some common applications of the TL431CLPM?
Common applications include rack server power, industrial AC/DC power supplies, AC inverter and VF drives, servo drive control modules, and notebook PC power adapter designs.
- What package type is the TL431CLPM available in?
The TL431CLPM is available in the TO-92 (LP) package type.
- How many pins does the TL431CLPM have?
The TL431CLPM has 3 pins.
- What is the package quantity for the TL431CLPM?
The package quantity is 2000 (Ammo).
- What are the reference voltage tolerances for the TL431CLPM?
The reference voltage tolerances are 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
