Overview
The LM431CIM3/NOPB is a 3-terminal adjustable shunt regulator produced by Texas Instruments. This device is designed to provide temperature stability over its entire operating temperature range. The LM431 allows for the output voltage to be set at any level greater than 2.5 V (VREF) up to 36 V by using two external resistors as a voltage divider network. Its sharp turn-on characteristics make it an excellent replacement for many Zener diode applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Cathode Voltage | 37 | V |
| Reference Voltage | -0.5 to VREF | V |
| Continuous Cathode Current | -10 to 150 | mA |
| Reference Input Current | 10 | mA |
| Internal Power Dissipation (TO-92 package) | 0.78 | W |
| Internal Power Dissipation (SOIC package) | 0.81 | W |
| Internal Power Dissipation (SOT-23 package) | 0.28 | W |
| Operating Temperature Range (Industrial) | -40 to 85 | °C |
| Operating Temperature Range (Commercial) | 0 to 70 | °C |
| Storage Temperature Range | -65 to 150 | °C |
| Package Type | SOT-23 (DBZ) | |
| Pins | 3 |
Key Features
- Average Temperature Coefficient: 50 ppm/°C
- Temperature Compensated for Operation Over the Full Temperature Range
- Programmable Output Voltage
- Fast Turn-on Response
- Low-Output Noise
- Low-Dynamic Output Impedance
- Available in space-saving SOIC-8, SOT-23, and TO-92 packages
Applications
- Adjustable Voltage or Current Linear and Switching Power Supplies
- Voltage Monitoring
- Current Source and Sink Circuits
- Circuits Requiring Precision References
- Zener Diode Replacements
Q & A
- What is the LM431CIM3/NOPB?
The LM431CIM3/NOPB is a 3-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the operating temperature range of the LM431CIM3/NOPB?
The operating temperature range is -40°C to 85°C for the industrial version and 0°C to 70°C for the commercial version.
- How is the output voltage set for the LM431CIM3/NOPB?
The output voltage can be set at any level greater than 2.5 V (VREF) up to 36 V by using two external resistors as a voltage divider network.
- What are the key features of the LM431CIM3/NOPB?
Key features include an average temperature coefficient of 50 ppm/°C, temperature compensation, programmable output voltage, fast turn-on response, low-output noise, and low-dynamic output impedance.
- In what packages is the LM431CIM3/NOPB available?
The LM431CIM3/NOPB is available in SOIC-8, SOT-23, and TO-92 packages.
- What are some common applications of the LM431CIM3/NOPB?
Common applications include adjustable voltage or current linear and switching power supplies, voltage monitoring, current source and sink circuits, circuits requiring precision references, and Zener diode replacements.
- What is the maximum cathode voltage for the LM431CIM3/NOPB?
The maximum cathode voltage is 37 V.
- What is the maximum continuous cathode current for the LM431CIM3/NOPB?
The maximum continuous cathode current is 150 mA.
- Is the LM431CIM3/NOPB RoHS compliant?
- Where can I purchase the LM431CIM3/NOPB?
The LM431CIM3/NOPB can be purchased from various suppliers such as Texas Instruments, Digi-Key, Mouser, and other electronic component distributors like X-ON Electronics and JLCPCB.
