Overview
The TLVH431ACDBVRE4 is a low-voltage adjustable precision shunt regulator produced by Texas Instruments. It is part of the TLVH431 series, known for its low power consumption and high precision. This device is designed to operate at low voltages, making it suitable for a wide range of applications in industrial, automotive, telecommunications, and computing sectors.
The TLVH431ACDBVRE4 offers adjustable output voltage from 1.24V to 18V, making it highly versatile. It features a low reference voltage of 1.24V, which is lower than its counterpart TL431, and a minimum cathode current of 100µA. This device can function as a shunt regulator, error amplifier, voltage clamp, or comparator with an integrated reference.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Voltage (VREF) | VKA = VREF, IK = 10mA, TA = 25°C | V | 1.221 | 1.24 | 1.259 |
| VREF Deviation over Full Temperature Range | VKA = VREF, IK = 10mA | mV | 4 | - | 12 |
| Cathode Current Range | - | µA | 100 | - | 70,000 |
| Output Impedance | - | Ω | - | 0.25 | - |
| Operating Temperature Range | - | °C | 0 | - | 70 |
Key Features
- Low-voltage operation down to 1.24V
- Adjustable output voltage from VREF (1.24V) to 18V
- Reference voltage tolerances at 25°C: 0.5% for B grade, 1% for A grade, and 1.5% for standard grade
- Wide operating cathode current range: 100µA to 70mA
- Typical output impedance of 0.25Ω
- Ultra-small SC-70 package offering a 40% smaller footprint than SOT-23-3
- Alternative pinouts for SOT-23-3 and SOT-89 packages
- Specified thermal stability over industrial and commercial temperature ranges
Applications
- Adjustable voltage reference for data converters
- Secondary side regulation in flyback SMPSs
- Zener replacement with low leakage current
- Voltage monitoring for power rails
- Comparator with integrated reference
Q & A
- What is the minimum operating voltage of the TLVH431ACDBVRE4?
The minimum operating voltage is 1.24V.
- What is the adjustable output voltage range of the TLVH431ACDBVRE4?
The adjustable output voltage range is from 1.24V to 18V.
- What are the reference voltage tolerances at 25°C for the TLVH431ACDBVRE4?
The reference voltage tolerances are 0.5% for B grade, 1% for A grade, and 1.5% for standard grade.
- What is the typical output impedance of the TLVH431ACDBVRE4?
The typical output impedance is 0.25Ω.
- What is the operating temperature range for the TLVH431ACDBVRE4?
The operating temperature range is from 0°C to 70°C.
- Can the TLVH431ACDBVRE4 be used as a comparator?
- What are some common applications of the TLVH431ACDBVRE4?
- What package options are available for the TLVH431ACDBVRE4?
The device is available in various packages including SOT-23-3, SOT-89, and SC-70.
- How does the TLVH431ACDBVRE4 differ from the TL431?
The TLVH431ACDBVRE4 has a lower reference voltage (1.24V vs 2.5V) and a lower minimum cathode current (100µA vs 1mA) compared to the TL431.
- What is the significance of the 'AC' in the part number TLVH431ACDBVRE4?
The 'AC' indicates the temperature range and tolerance grade; in this case, it specifies operation from 0°C to 70°C with a 1% reference voltage tolerance.
