Overview
The TLV431CSN1T1G is a precision low voltage shunt regulator produced by onsemi. It belongs to the TLV431 series, which is known for its programmable output voltage range of 1.24 V to 16 V. This device is particularly notable for its high reference accuracy, making it an excellent replacement for zener diodes in various applications requiring precise reference voltages. The TLV431CSN1T1G is part of the TLV431C series, which offers a reference accuracy of ±0.2% at 25°C and ±1.0% over the industrial temperature range of -40°C to 85°C. It is available in a micro miniature SOT-23-3 package, making it suitable for space-constrained designs.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Voltage | Vref | V | 1.228 | 1.240 | 1.252 |
| Reference Voltage Tolerance | % | ±0.2% | ±1.0% (over temperature range) | ||
| Cathode to Anode Voltage | VKA | V | 18 | ||
| Cathode Current Range | IK | mA | -20 | 25 | |
| Reference Input Current Range | Iref | mA | 0.05 | 10 | |
| Operating Junction Temperature | °C | -40 | 85 | ||
| Thermal Resistance, Junction-to-Ambient | R�JA | °C/W | 491 |
Key Features
- Programmable Output Voltage Range of 1.24 V to 16 V
- Voltage Reference Tolerance of ±0.2% for the TLV431C 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
- Available in micro miniature TSOP-5, SOT-23-3, and TO-92-3 packages
- Pb-Free and Halide-Free Devices
- AEC-Q100 Qualified and PPAP Capable for automotive and other critical 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 programmable output voltage range of the TLV431CSN1T1G?
The programmable output voltage range is from 1.24 V to 16 V.
- What is the reference voltage tolerance of the TLV431C series?
The reference voltage tolerance is ±0.2% at 25°C and ±1.0% over the industrial temperature range.
- What are the typical package types available for the TLV431 series?
The devices are available in TSOP-5, SOT-23-3, and TO-92-3 packages.
- What is the operating current range of the TLV431CSN1T1G?
The operating current range is from 50 μA to 20 mA.
- Can the TLV431CSN1T1G be used as an error amplifier in switching power supplies?
Yes, it can be used as an error amplifier for controlling the feedback loop in isolated low output voltage switching power supplies.
- Is the TLV431CSN1T1G suitable for automotive applications?
Yes, it is AEC-Q100 Qualified and PPAP Capable, making it suitable for automotive and other critical applications.
- What is the thermal resistance, junction-to-ambient, for the SOT-23-3 package?
The thermal resistance, junction-to-ambient, is 491 °C/W for the SOT-23-3 package.
- Are the TLV431 series devices Pb-Free and Halide-Free?
Yes, the devices are Pb-Free and Halide-Free.
- What is the dynamic output impedance of the TLV431CSN1T1G?
The dynamic output impedance is 0.20 Ω from 100 μA to 20 mA.
- What are some common applications where the TLV431CSN1T1G can replace zener diodes?
It can replace zener diodes in various applications requiring precise reference voltages, such as voltage monitoring, current source and sink circuits, and analog and digital circuits.
