Overview
The TLV431BSNT1G is a precision low voltage shunt regulator produced by onsemi. This device is part of the TLV431 series, which includes the A, B, and C series, each offering different levels of reference voltage accuracy. The TLV431BSNT1G specifically belongs to the B series, featuring a guaranteed reference accuracy of ±0.5% at 25°C and ±1.0% over the entire industrial temperature range of -40°C to 85°C. These regulators are programmable over a wide voltage range of 1.24 V to 16 V, making them versatile for various applications requiring precise reference voltages.
The device exhibits a sharp low current turn-on characteristic and a low dynamic impedance of 0.20 Ω over an operating current range of 100 µA to 20 mA. This makes it an excellent replacement for zener diodes in many circuits. Additionally, when combined with an optocoupler, the TLV431BSNT1G can be used as an error amplifier for controlling the feedback loop in isolated low output voltage switching power supplies.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Voltage (at 25°C, IK = 10 mA) | Vref | V | 1.234 | 1.240 | 1.246 |
| Reference Voltage Tolerance | - | % | - | ±0.5% | - |
| Cathode to Anode Voltage | VKA | V | - | - | 18 |
| Cathode Current Range | IK | mA | -20 | - | 25 |
| Reference Input Current Range | Iref | mA | 0.05 | - | 10 |
| Thermal Resistance, Junction-to-Ambient (TSOP-5 package) | RθJA | °C/W | - | - | 226 |
| Operating Junction Temperature | TJ | °C | -40 | - | 125 |
Key Features
- Programmable Output Voltage Range of 1.24 V to 16 V
- Voltage Reference Tolerance of ±0.5% for B Series
- Sharp Low Current Turn-On Characteristic
- Low Dynamic Output Impedance of 0.20 Ω from 100 µA to 20 mA
- Wide Operating Current Range of 100 µA to 20 mA
- Micro Miniature TSOP-5 and SOT-23-3 Packages
- Pb-Free and Halide-Free Devices
- AEC-Q100 Qualified and PPAP Capable for Automotive Applications
Applications
- Low Output Voltage (3.0 V to 3.3 V) Switching Power Supply Error Amplifier
- Adjustable Voltage or Current Linear and Switching Power Supplies
- Voltage Monitoring
- Current Source and Sink Circuits
- Analog and Digital Circuits Requiring Precision References
- Low Voltage Zener Diode Replacements
- Power Supplies
- Smart Phone Charger / Adapters
Q & A
- What is the reference voltage accuracy of the TLV431BSNT1G?
The TLV431BSNT1G has a reference voltage accuracy of ±0.5% at 25°C and ±1.0% over the entire industrial temperature range of -40°C to 85°C.
- What is the programmable output voltage range of the TLV431BSNT1G?
The programmable output voltage range is from 1.24 V to 16 V.
- What are the typical package types available for the TLV431BSNT1G?
The device is available in TSOP-5 and SOT-23-3 packages.
- What is the operating current range of the TLV431BSNT1G?
The operating current range is from 100 µA to 20 mA.
- Can the TLV431BSNT1G be used as a replacement for zener diodes?
- What are some common applications of the TLV431BSNT1G?
- Is the TLV431BSNT1G suitable for automotive applications?
- What is the thermal resistance of the TSOP-5 package for the TLV431BSNT1G?
- Is the TLV431BSNT1G Pb-Free and Halide-Free?
- Can the TLV431BSNT1G be used in isolated switching power supplies?
