Overview
The TL432BQDBZR is a precision adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 and TL432 family, which are three-terminal adjustable shunt regulators known for their specified thermal stability across various temperature ranges. The TL432 device has the same functionality and electrical specifications as the TL431 but differs in pinout configurations for DBV, DBZ, and PK packages. This component is ideal for applications requiring adjustable output voltages and high thermal stability.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | Voltage tolerance grades |
| Adjustable Output Voltage | Vref to 36V | Settable with two external resistors |
| Operating Temperature Range | −40°C to 125°C | Temperature range for TL43xxQ devices |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | Temperature drift over different temperature ranges |
| Output Impedance | 0.2Ω (typical) | Output impedance of the device |
| Sink-Current Capability | 1mA to 100mA | Current sinking capability of the device |
| Package Type | SOT-23-3 | Package type for the TL432BQDBZR |
| Body Size | 2.90mm × 1.30mm | Nominal body size including pins |
Key Features
- Adjustable Output Voltage: The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- Low Output Noise: The device features low output noise, making it suitable for noise-sensitive applications.
- Sharp Turn-On Characteristic: Active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- High Thermal Stability: The device is characterized for operation over a wide temperature range, ensuring good stability over the entire range.
- Low Output Impedance: Typical output impedance of 0.2Ω.
- Sink-Current Capability: The device can sink currents from 1mA to 100mA.
Applications
- Rack Server Power: Used in power supply systems for rack servers.
- Industrial AC/DC: Suitable for industrial AC/DC power supplies.
- AC Inverter & VF Drives: Used in AC inverter and variable frequency drive applications.
- Servo Drive Control Module: Employed in servo drive control modules.
- Notebook PC Power Adapter Design: Used in power adapter designs for notebook PCs.
- On-Board Regulation: Ideal for on-board voltage regulation.
- Adjustable Power Supplies: Used in adjustable power supply applications.
- Switching Power Supplies: Suitable for switching power supply designs.
Q & A
- What is the TL432BQDBZR?
The TL432BQDBZR is a precision adjustable shunt regulator produced by Texas Instruments.
- What are the key differences between the TL431 and TL432 devices?
The TL431 and TL432 devices have the same functionality and electrical specifications but differ in their pinout configurations.
- What is the adjustable output voltage range of the TL432BQDBZR?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What is the operating temperature range of the TL432BQDBZR?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL432BQDBZR?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL432BQDBZR?
The device can sink currents from 1mA to 100mA.
- What are some common applications of the TL432BQDBZR?
Common applications include rack server power, industrial AC/DC, AC inverter & VF drives, servo drive control modules, and notebook PC power adapter designs.
- Why is the TL432BQDBZR a good replacement for Zener diodes?
The device provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What is the package type of the TL432BQDBZR?
The package type is SOT-23-3.
- What are the dimensions of the TL432BQDBZR package?
The nominal body size is 2.90mm × 1.30mm, including pins.
