Overview
The TLV431BSN1T1G is a precision low voltage shunt regulator from onsemi, part of the TLV431 series. This device is programmable over a wide voltage range of 1.24 V to 16 V, making it highly versatile for various applications. The TLV431B series, which includes the TLV431BSN1T1G, features a high reference accuracy of ±0.5% at 25°C and ±1.0% over the entire industrial temperature range of -40°C to 85°C. This accuracy, combined with its sharp low current turn-on characteristic and low dynamic impedance, makes it an excellent replacement for zener diodes in many circuits requiring precise reference voltages.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Voltage | Vref | V | 1.228 | 1.240 | 1.252 |
| Cathode to Anode Voltage | VKA | V | - | - | 18 |
| Cathode Current Range, Continuous | IK | mA | -20 | - | 25 |
| Reference Input Current Range, Continuous | Iref | mA | 0.05 | - | 10 |
| Thermal Resistance, Junction-to-Ambient | R�JA | °C/W | - | - | 491 |
| Operating Junction Temperature | - | °C | -40 | - | 125 |
Key Features
- Programmable Output Voltage Range of 1.24 V to 16 V
- Voltage Reference Tolerance ±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 50 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 and other applications requiring unique site and control change requirements
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 voltage range of the TLV431BSN1T1G?
The TLV431BSN1T1G is programmable over a wide voltage range of 1.24 V to 16 V.
- What is the reference accuracy of the TLV431B series at 25°C?
The reference accuracy of the TLV431B series at 25°C is ±0.5%.
- What are the typical package types for the TLV431BSN1T1G?
The TLV431BSN1T1G is available in micro miniature SOT-23-3 packages.
- What is the operating current range of the TLV431BSN1T1G?
The operating current range of the TLV431BSN1T1G is from 50 μA to 20 mA.
- Can the TLV431BSN1T1G be used as an error amplifier in switching power supplies?
Yes, when combined with an optocoupler, the TLV431BSN1T1G can be used as an error amplifier for controlling the feedback loop in isolated low output voltage switching power supplies.
- What is the thermal resistance (Junction-to-Ambient) for the SOT-23-3 package?
The thermal resistance (Junction-to-Ambient) for the SOT-23-3 package is approximately 491 °C/W.
- Is the TLV431BSN1T1G AEC-Q100 qualified?
Yes, the TLV431BSN1T1G is AEC-Q100 qualified and PPAP capable.
- What are some common applications for the TLV431BSN1T1G?
Common applications include low output voltage switching power supplies, voltage monitoring, current source and sink circuits, and as replacements for low voltage zener diodes.
- Is the TLV431BSN1T1G Pb-Free and Halide-Free?
Yes, the TLV431BSN1T1G is Pb-Free and Halide-Free.
- What is the dynamic output impedance of the TLV431BSN1T1G?
The dynamic output impedance of the TLV431BSN1T1G is 0.20 Ω over an operating current range of 100 μA to 20 mA.
