Overview
The TLV431BQPKG3 is a precision programmable shunt voltage reference produced by Texas Instruments. This device is designed to provide an accurate reference voltage in a compact and cost-effective package. It offers exceptional performance in terms of voltage accuracy, low noise, and simplicity, making it an ideal choice for a broad range of applications. The TLV431BQPKG3 features an adjustable output voltage ranging from 1.24V to 6V, which can be set using external resistors, and it operates from a lower voltage than many traditional shunt-regulator references.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TLV431BQPKG3 |
| Package | SOT-89-3 |
| Output Voltage Range | 1.24V to 6V (adjustable) |
| Reference Voltage Tolerance at 25°C | ±0.5% (TLV431B) |
| Temperature Coefficient | 20ppm/°C |
| Input Voltage Range | Up to 36V |
| Output Noise | 30µVrms |
| Power Supply Rejection Ratio | 75dB |
| Quiescent Current | 100µA |
| Bi-directional Output Current | Up to 20mA |
| Operating Temperature Range | -40°C to 125°C |
| RoHS Status | Lead Free / RoHS Compliant |
Key Features
- Low-voltage operation with VREF = 1.24V
- Adjustable output voltage from VREF to 6V using external resistors
- High accuracy with ±0.5% tolerance at 25°C for TLV431B
- Low output noise of 30µVrms
- Low operational cathode current of 80µA typical
- Typical output impedance of 0.25Ω
- Bi-directional output current up to 20mA
- Compact SOT-89-3 package
- Temperature range of -40°C to 125°C
Applications
- Power Supply Regulators
- Battery Chargers
- Power Management Systems
- LED Drivers
- Instrumentation and Measurement Devices
- Voltage Monitoring Systems
- Reference Voltage Sources in DACs and ADCs
Q & A
- What is the maximum input voltage for the TLV431BQPKG3?
The maximum input voltage is 36V.
- Can I use the TLV431 as a current regulator?
Yes, it can be configured for current regulation in various applications.
- What types of packages are available for the TLV431?
The TLV431 is available in multiple package types, including SOT-23 and SOT-89-3.
- How do I calculate the output voltage of the TLV431?
The output voltage can be calculated using the formula Vout = Vref (1 + R1/R2), where R1 and R2 are the external resistors.
- Is it necessary to use external resistors with the TLV431?
Yes, external resistors are required to set the desired output voltage.
- What is the typical output impedance of the TLV431BQPKG3?
The typical output impedance is 0.25Ω.
- What is the operating temperature range of the TLV431BQPKG3?
The operating temperature range is -40°C to 125°C.
- Is the TLV431BQPKG3 RoHS compliant?
Yes, the TLV431BQPKG3 is Lead Free / RoHS Compliant.
- What is the quiescent current of the TLV431BQPKG3?
The quiescent current is 100µA.
- Can the TLV431BQPKG3 be used as a replacement for Zener diodes?
Yes, the TLV431BQPKG3 can be used as a replacement for low-voltage Zener diodes in many applications.
