Overview
The TL432AQDBZRQ1 from Texas Instruments is an automotive-grade adjustable precision shunt regulator. This device is part of the TL43x-Q1 family and is designed to provide high accuracy and stability over a wide range of temperatures. It is particularly suited for automotive applications due to its compliance with AEC-Q100 test guidelines and its ability to operate within an ambient temperature range of –40°C to 125°C. The TL432AQDBZRQ1 offers a versatile solution for various power supply and voltage regulation needs, making it an excellent replacement for Zener diodes in many applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23 (DBZ), 3 pins |
| Operating Temperature Range | –40°C to 125°C |
| Reference Voltage Tolerance at 25°C | 1% (A Grade), 0.5% (B Grade) |
| Typical Temperature Drift | 14 mV (Q Temp) |
| Output Impedance | 0.2 Ω (typical) |
| Sink-Current Capability | 1 mA to 100 mA |
| Adjustable Output Voltage | VREF (approximately 2.5 V) to 36 V |
| Reference Current | At least 4 µA |
Key Features
- Qualified for automotive applications with AEC-Q100 test guidance.
- Adjustable output voltage from VREF (approximately 2.5 V) to 36 V using two external resistors.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability of 1 mA to 100 mA.
- Sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Internal Darlington pair for high current sinking capability.
Applications
- Onboard regulation.
- Adjustable power supplies.
- Switching power supplies.
- Secondary side regulation in flyback SMPSs.
- Zener replacement.
- Voltage monitoring.
- Comparator with integrated reference.
- Automotive LED lighting with adjustable shunt references.
Q & A
- What is the operating temperature range of the TL432AQDBZRQ1?
The TL432AQDBZRQ1 operates within an ambient temperature range of –40°C to 125°C. - What is the reference voltage tolerance at 25°C for the TL432AQDBZRQ1?
The reference voltage tolerance at 25°C is 1% (A Grade) and 0.5% (B Grade). - What is the typical temperature drift of the TL432AQDBZRQ1?
The typical temperature drift is 14 mV (Q Temp). - What is the output impedance of the TL432AQDBZRQ1?
The output impedance is typically 0.2 Ω. - What is the sink-current capability of the TL432AQDBZRQ1?
The sink-current capability ranges from 1 mA to 100 mA. - How can the output voltage of the TL432AQDBZRQ1 be adjusted?
The output voltage can be adjusted from VREF (approximately 2.5 V) to 36 V using two external resistors. - What are some common applications of the TL432AQDBZRQ1?
Common applications include onboard regulation, adjustable power supplies, switching power supplies, and automotive LED lighting. - Is the TL432AQDBZRQ1 a suitable replacement for Zener diodes?
Yes, the TL432AQDBZRQ1 is an excellent replacement for Zener diodes due to its sharp turn-on characteristic and low output noise. - What is the package type of the TL432AQDBZRQ1?
The TL432AQDBZRQ1 comes in a SOT-23 (DBZ) package with 3 pins. - What is the minimum reference current required for the TL432AQDBZRQ1?
The minimum reference current required is at least 4 µA.
