Overview
The TL431AIDBZR is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its high precision and adjustable output voltage. The TL431AIDBZR offers a reference voltage tolerance of 1% at 25°C and can be set to any value between approximately 2.5V and 36V using two external resistors. It operates over a wide temperature range from -40°C to 85°C, making it suitable for various automotive, commercial, and industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 1% | - |
| Adjustable Output Voltage Range | 2.495 V to 36 V | V |
| Operating Temperature Range | -40°C to 85°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 | SOT23 | - |
| Package Size | 2.9 x 1.3 x 1 mm | mm |
Key Features
- Adjustable output voltage from approximately 2.5V to 36V using two external resistors.
- Reference voltage tolerance of 1% at 25°C.
- Operation from -40°C to 85°C, with some grades extending to 125°C.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability ranging from 1 mA to 100 mA.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
Applications
- Rack server power supplies.
- Industrial AC/DC power supplies.
- AC inverter and variable frequency (VF) drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
- On-board regulation and adjustable power supplies.
- Switching power supplies.
Q & A
- What is the TL431AIDBZR?
The TL431AIDBZR is a three-terminal adjustable precision shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431AIDBZR?
The output voltage can be set to any value between approximately 2.5V and 36V using two external resistors.
- What is the reference voltage tolerance of the TL431AIDBZR at 25°C?
The reference voltage tolerance is 1% at 25°C.
- What is the operating temperature range of the TL431AIDBZR?
The device operates from -40°C to 85°C.
- What is the typical output impedance of the TL431AIDBZR?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431AIDBZR?
The sink-current capability ranges from 1 mA to 100 mA.
- In what package is the TL431AIDBZR available?
The TL431AIDBZR is available in the SOT23 package.
- What are some common applications of the TL431AIDBZR?
Common applications include rack server power supplies, industrial AC/DC power supplies, AC inverter and VF drives, servo drive control modules, and notebook PC power adapter designs.
- Can the TL431AIDBZR replace Zener diodes in some applications?
Yes, the TL431AIDBZR can replace Zener diodes in many applications due to its active output circuitry and sharp turn-on characteristic.
- What is the size of the SOT23 package for the TL431AIDBZR?
The SOT23 package measures 2.9 x 1.3 x 1 mm.
