Overview
The TLVH432BIDBZR is a low-voltage, 3-terminal adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TLVH431 and TLVH432 series, known for their low-voltage operation and high precision. The TLVH432BIDBZR operates from a voltage as low as 1.24V, making it suitable for a wide range of applications, including those requiring low-voltage references and adjustable output voltages. The device is available in a SOT-23 (DBZ) package with 3 pins and offers alternative pinouts for different package types, enhancing its versatility in various circuit designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBZ) | - |
| Pins | 3 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Reference Voltage (VREF) | 1.234 to 1.246 | V |
| Reference Voltage Tolerance at 25°C | ±0.5% (B grade) | - |
| Adjustable Output Voltage Range | VREF to 18V | V |
| Cathode Current Range | 100µA to 70mA | A |
| Output Impedance (typical) | 0.25Ω | Ω |
Key Features
- Low-voltage operation down to 1.24V.
- Reference voltage tolerances: ±0.5% for B grade, ±1% for A grade, and ±1.5% for standard grade at 25°C.
- Adjustable output voltage from VREF (1.24V) to 18V using two external resistors.
- Wide operating cathode current range: 100µA to 70mA.
- Typical output impedance of 0.25Ω.
- Alternative pinouts available for SOT-23-3 and SOT-89 packages.
- Ultra-small SC-70 package option offering a 40% smaller footprint than SOT-23-3.
Applications
- Adjustable voltage reference for data converters.
- Secondary side regulation in flyback switching-mode power supplies (SMPSs).
- Zener replacement with low leakage current.
- Voltage monitoring for power rails.
- Comparator with integrated reference.
- Isolated feedback circuits for 3V to 3.3V switching-mode power supplies when used with an optocoupler.
Q & A
- What is the minimum operating voltage of the TLVH432BIDBZR?
The minimum operating voltage is 1.24V.
- What are the reference voltage tolerances for the TLVH432BIDBZR?
The reference voltage tolerances are ±0.5% for B grade, ±1% for A grade, and ±1.5% for standard grade at 25°C.
- What is the adjustable output voltage range of the TLVH432BIDBZR?
The adjustable output voltage range is from VREF (1.24V) to 18V.
- What is the typical output impedance of the TLVH432BIDBZR?
The typical output impedance is 0.25Ω.
- What are the common applications of the TLVH432BIDBZR?
Common applications include adjustable voltage references, secondary side regulation in flyback SMPSs, Zener replacement, voltage monitoring, and comparators with integrated references.
- What package types are available for the TLVH432BIDBZR?
The device is available in SOT-23 (DBZ), SOT-89, and ultra-small SC-70 packages.
- What is the operating temperature range of the TLVH432BIDBZR?
The operating temperature range is -40°C to 85°C.
- How can the output voltage of the TLVH432BIDBZR be adjusted?
The output voltage can be adjusted using two external resistors.
- What is the cathode current range of the TLVH432BIDBZR?
The cathode current range is 100µA to 70mA.
- Can the TLVH432BIDBZR be used in isolated feedback circuits?
Yes, it can be used in isolated feedback circuits for 3V to 3.3V switching-mode power supplies when used with an optocoupler.
