Overview
The TL432BQDBZRG4 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 offers adjustable output voltage, settable between the reference voltage (approximately 2.5V) 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 |
| Typical Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | SOT-23 (DBZ) | - |
| Pins | 3 | - |
| Package Quantity | 3000 (Carrier) | - |
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
- Typical temperature drift: 6 mV (C temp), 14 mV (I temp, Q temp)
- Low output noise
- Typical output impedance: 0.2 Ω
- Sink-current capability: 1 mA to 100 mA
- Active output circuitry with a sharp turn-on characteristic
Applications
- On-board regulation
- Adjustable power supplies
- Switching power supplies
- Rack server power
- Industrial AC/DC
- AC inverter & VF drives
- Servo drive control module
- Notebook PC power adapter design
- Secondary side regulation in flyback SMPSs
- Voltage monitoring
- Comparator with integrated reference
Q & A
- What is the TL432BQDBZRG4 used for?
The TL432BQDBZRG4 is used as a three-terminal adjustable shunt regulator, often replacing Zener diodes in applications such as on-board regulation, adjustable power supplies, and switching power supplies.
- What is the adjustable output voltage range of the TL432BQDBZRG4?
The output voltage can be set to any value between the reference voltage (approximately 2.5V) and 36V using two external resistors.
- What are the temperature ranges for the TL432BQDBZRG4?
The device operates from -40°C to 125°C.
- What are the reference voltage tolerances for the TL432BQDBZRG4?
The reference voltage tolerances are 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the typical output impedance of the TL432BQDBZRG4?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL432BQDBZRG4?
The sink-current capability ranges from 1 mA to 100 mA.
- What package type does the TL432BQDBZRG4 come in?
The device comes in an SOT-23 (DBZ) package with 3 pins.
- What are some common applications of the TL432BQDBZRG4?
Common applications include rack server power, industrial AC/DC, AC inverter & VF drives, servo drive control modules, and notebook PC power adapter designs.
- How does the TL432BQDBZRG4 compare to Zener diodes?
The TL432BQDBZRG4 offers active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What is the typical temperature drift of the TL432BQDBZRG4?
The typical temperature drift is 6 mV (C temp) and 14 mV (I temp, Q temp).
