Overview
The TL432BIDBZR is a three-terminal adjustable shunt regulator produced by Texas Instruments. This component is designed to operate within automotive, commercial, and military temperature ranges, ensuring thermal stability across various environments. It allows the output voltage to be set between Vref (approximately 2.5V) and 36V using two external resistors. With a typical output impedance of 0.2Ω, the TL432BIDBZR features an active output circuit with sharp turn-on characteristics, making it an ideal replacement for Zener diodes in applications such as onboard regulators, adjustable power supplies, and switching power supplies. It shares identical functionality and electrical characteristics with the TL431 device but differs in pin configuration for DBV, DBZ, and PK packages.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage Range | 2.495 - 36 | V | Adjustable via external resistors |
| Output Impedance | 0.2 | Ω | Typical value |
| Reference Voltage (Vref) | 2.495 | V | Approximate value |
| Operating Temperature Range | -40 to 85 | °C | Wide range for automotive, commercial, and military use |
| Output Current | 100 | mA | Maximum value |
| Cathode Current | 700 | µA | Typical value |
| Tolerance | ±0.5 | % | High precision |
| Package | SOT-23-3 | - | Surface mount |
Key Features
- Adjustable output voltage between 2.5V and 36V using external resistors.
- Low output impedance of 0.2Ω for stable performance.
- Active output circuit with sharp turn-on characteristics, suitable for replacing Zener diodes.
- Operates across a wide temperature range (-40°C to 85°C) for diverse applications.
- Identical functionality to TL431 but with different pin configurations for DBV, DBZ, and PK packages.
Applications
The TL432BIDBZR is widely used in various industries due to its precision and stability. Common applications include onboard voltage regulators, adjustable power supplies, and switching power supplies. Its ability to replace Zener diodes makes it a versatile choice for power management in automotive, commercial, and military systems. Additionally, its compact SOT-23-3 package makes it suitable for space-constrained designs.
Q & A
1. What is the output voltage range of the TL432BIDBZR?
The output voltage can be adjusted between 2.495V and 36V using external resistors.
2. What is the typical output impedance of the TL432BIDBZR?
The typical output impedance is 0.2Ω.
3. Can the TL432BIDBZR operate in automotive environments?
Yes, it is designed to operate across automotive, commercial, and military temperature ranges.
4. What is the reference voltage (Vref) of the TL432BIDBZR?
The reference voltage is approximately 2.5V.
5. What is the maximum output current of the TL432BIDBZR?
The maximum output current is 100mA.
6. How does the TL432BIDBZR compare to the TL431?
It shares identical functionality and electrical characteristics but has different pin configurations for DBV, DBZ, and PK packages.
7. What is the typical cathode current of the TL432BIDBZR?
The typical cathode current is 700µA.
8. What is the tolerance of the TL432BIDBZR?
The tolerance is ±0.5%, ensuring high precision.
9. What package does the TL432BIDBZR come in?
It is available in the SOT-23-3 surface mount package.
10. Is the TL432BIDBZR suitable for replacing Zener diodes?
Yes, its active output circuit with sharp turn-on characteristics makes it an ideal replacement for Zener diodes in many applications.
