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LM431BCM3X/NOPB
V-Ref Adjustable 2.495V to 37V 100mA 3-Pin SOT-23 T/R
LM431BCM3X/NOPB
V-Ref Adjustable 2.495V to 37V 100mA 3-Pin SOT-23 T/R
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Manufacturer Part # : LM431BCM3X/NOPB
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Package/Case: SOT23-3
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Brand: Texas Instruments
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Product Categories : Voltage Reference
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
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LM431BCM3X/NOPB DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The LM431BCM3X/NOPB is a versatile 3-terminal adjustable shunt regulator that offers exceptional temperature stability across its entire operating range. With the ability to set the output voltage to any level above 2.5V (VREF) up to 36V, this regulator is highly customizable using just two external resistors as a voltage divider network. Its sharp turnon characteristics make it a superior choice for replacing Zener diodes in various applications
Key Features
- Compact Design with Low Profile
- Wide Operating Temperature Range
- SMT and Through Hole Package Options
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| VO (V) | 2.5 | Initial accuracy (max) (%) | 0.5, 1, 2 |
| VO adj (min) (V) | 2.5 | VO adj (max) (V) | 36 |
| Iz for regulation (min) (µA) | 400 | Reference voltage (V) | adjustable |
| Rating | Catalog | Temp coeff (max) (ppm/°C) | 97 |
| Operating temperature range (°C) | -40 to 85, 0 to 70 | Iout/Iz (max) (mA) | 100 |
FAQs
What is LM431BCM3X/NOPB?
The LM431BCM3X/NOPB is a programmable shunt voltage reference diode designed by Texas Instruments. It provides a stable reference voltage for precision analog circuits and is commonly used in voltage regulators, feedback loops, and measurement applications.
How Does LM431BCM3X/NOPB Work?
The LM431BCM3X/NOPB works by maintaining a constant voltage across its terminals, providing a stable reference voltage regardless of variations in load or supply voltage. It can be programmed to different reference voltages through the adjustment of an external resistor, offering flexibility in system design.
How Many Pins does LM431BCM3X/NOPB have and What are the Functions of the Pinout Configuration?
The LM431BCM3X/NOPB is housed in a 3-pin SOT-23 package. The pinout configuration includes:
- Cathode: Connection point for the cathode of the internal diode.
- Anode: Connection point for the anode of the internal diode.
- Adjust: Adjustment pin for programming the reference voltage.
What are the Pros and Cons of LM431BCM3X/NOPB?
Pros:
- Precision: Provides a stable and accurate reference voltage for analog circuits.
- Programmable: Offers the ability to set the reference voltage to a specific value using an external resistor.
- Small Package: Housed in a compact SOT-23 package, suitable for space-constrained designs.
- Low Cost: Provides a cost-effective solution for voltage reference applications.
Cons:
- Current Limitation: The maximum cathode current is limited, which may not be suitable for high-current applications.
- Noisier than Bandgap Reference: Shunt references like the LM431BCM3X/NOPB are generally noisier than bandgap references, which may impact some sensitive applications.
Are There Any Equivalents/Alternatives to LM431BCM3X/NOPB for Recommendation?
- The TL431 from Texas Instruments is a direct alternative to the LM431BCM3X/NOPB.
- Alternatives to the LM431BCM3X/NOPB include the REF01 from Analog Devices and the PR9211 from Diodes Incorporated.
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