Overview
The TLVH431BIDBZR is a low-voltage, adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TLVH431 series, known for its low power consumption and high precision. It operates with a reference voltage of 1.24V and is designed to replace low-voltage Zener diodes in various applications. The TLVH431BIDBZR is packaged in a SOT-23-3 package, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Description |
|---|---|
| Reference Voltage | 1.24V |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 1.5% (standard grade) |
| Adjustable Output Voltage | VREF to 18V |
| Operating Temperature Range | –40°C to +125°C |
| Sink-Current Capability | 100µA to 70mA |
| Output Impedance | 0.25Ω typical |
| Package | SOT-23-3 |
| RoHS Compliance | Yes |
Key Features
- Low-voltage operation down to 1.24V
- Adjustable output voltage from VREF to 18V with two external resistors
- Wide operating cathode current range: 100µA to 70mA
- Typical output impedance of 0.25Ω
- Specified thermal stability over industrial and commercial temperature ranges
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for low-voltage Zener diodes
Applications
- On-board regulation and adjustable power supplies
- Secondary side regulation in flyback switching-mode power supplies (SMPS)
- Zener replacement in low-voltage applications
- Voltage monitoring and voltage clamping
- Comparator with integrated reference in various industrial, automotive, and telecom applications
Q & A
- What is the reference voltage of the TLVH431BIDBZR?
The reference voltage is 1.24V.
- What are the temperature ranges for the TLVH431BIDBZR?
The device operates from –40°C to +125°C.
- What is the typical output impedance of the TLVH431BIDBZR?
The typical output impedance is 0.25Ω.
- What is the sink-current capability of the TLVH431BIDBZR?
The sink-current capability ranges from 100µA to 70mA.
- Can the TLVH431BIDBZR replace Zener diodes?
Yes, it is an excellent replacement for low-voltage Zener diodes due to its sharp turn-on characteristic.
- What package type is the TLVH431BIDBZR available in?
The device is packaged in a SOT-23-3 package.
- Is the TLVH431BIDBZR RoHS compliant?
Yes, the TLVH431BIDBZR is RoHS compliant.
- What are some common applications of the TLVH431BIDBZR?
Common applications include on-board regulation, adjustable power supplies, and secondary side regulation in flyback SMPSs.
- How do you set the output voltage of the TLVH431BIDBZR?
The output voltage can be set to any value between VREF (1.24V) and 18V using two external resistors.
- What is the significance of the 'B' in TLVH431BIDBZR?
The 'B' denotes a reference voltage tolerance of 0.5% at 25°C.
