Overview
The TLV431ASN1T1G is a precision low voltage adjustable shunt regulator produced by onsemi. This device is part of the TLV431 series, which includes the TLV431A, B, and C models, each offering different levels of reference voltage accuracy. The TLV431ASN1T1G is specifically the A series version in the SOT-23-3 package, known for its high precision and wide operating range.
This regulator is programmable over a voltage range of 1.24 V to 16 V, making it versatile for various applications requiring precise voltage regulation. It features a guaranteed reference accuracy of ±1.0% at 25°C and ±2.0% over the entire industrial temperature range of -40°C to 85°C.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Reference Voltage (VKA = Vref, IK = 10 mA, TA = 25°C) | Vref | 1.228 | 1.240 | 1.252 | V |
| Cathode to Anode Voltage | VKA | - | - | 18 | V |
| Cathode Current Range, Continuous | IK | 0.1 | - | 20 | mA |
| Reference Input Current Range, Continuous | Iref | 0.05 | - | 10 | mA |
| Operating Junction Temperature | TJ | - | - | 150 | °C |
| Operating Ambient Temperature Range | TA | -40 | - | 85 | °C |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
| Thermal Resistance, Junction-to-Ambient (SOT-23-3 Package) | RθJA | - | - | 491 | °C/W |
Key Features
- Programmable Output Voltage Range of 1.24 V to 16 V
- Voltage Reference Tolerance ±1.0% for A 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, SOT-23-3, and TO-92-3 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 Supplies
- Error Amplifier for Controlling Feedback Loop in Isolated Switching Power Supplies
- Voltage Monitoring and Regulation in Various Electronic Circuits
- Replacement for Zener Diodes in Precision Voltage Reference Applications
- Linear and Phono Amplifiers
- Isolated Output Line Powered Switching Regulators
Q & A
- What is the reference voltage range of the TLV431ASN1T1G?
The reference voltage range is programmable from 1.24 V to 16 V.
- What is the reference voltage accuracy of the TLV431A series at 25°C?
The reference voltage accuracy is ±1.0% at 25°C.
- What are the operating temperature ranges for the TLV431ASN1T1G?
The operating ambient temperature range is -40°C to 85°C, and the storage temperature range is -65°C to 150°C.
- What are the package options available for the TLV431 series?
The TLV431 series is available in TSOP-5, SOT-23-3, and TO-92-3 packages.
- Is the TLV431ASN1T1G suitable for automotive applications?
Yes, it is AEC-Q100 Qualified and PPAP Capable, making it suitable for automotive applications.
- What is the thermal resistance of the SOT-23-3 package?
The thermal resistance, junction-to-ambient, for the SOT-23-3 package is 491°C/W.
- Can the TLV431ASN1T1G be used as a replacement for Zener diodes?
Yes, it can be used as a replacement for Zener diodes in numerous applications requiring precise voltage reference.
- What is the dynamic output impedance of the TLV431ASN1T1G?
The dynamic output impedance is 0.20 Ω over an operating current range of 100 μA to 20 mA.
- Does the TLV431ASN1T1G have ESD protection?
Yes, it exceeds the Human Body Model 2000 V per JEDEC JESD22-A114F and other ESD tests.
- What is the typical cathode current range for the TLV431ASN1T1G?
The cathode current range is from 0.1 mA to 20 mA.
