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TL431ID
+NomenclatureIC VREF SHUNT ADJ 2.21% 8SO
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FabricantSemi - conducteurs optiques
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Pièce fabricant #TL431ID
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Fiche technique TL431ID DataSheet
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Package SOIC (D)-8
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En stock5277
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Spécifications
| Attribut | Valeur |
| Package | Tube |
| ProductStatus | Obsolete |
| ReferenceType | Shunt |
| OutputType | Adjustable |
| Voltage-Output(Min/Fixed) | 2.495V |
| Voltage-Output(Max) | 36 V |
| Current-Output | 100 mA |
| Tolerance | ±2.21% |
| Current-Cathode | 1 mA |
| OperatingTemperature | -40°C ~ 105°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Présentation
Description
This device is widely utilized in power supply applications, where it can help maintain a constant output voltage despite variations in load current or input voltage. The TL431ID offers excellent temperature stability and low output noise, making it suitable for precision applications. It operates typically with a reference voltage of 2.5V and can adjust its output up to 36V.
Its small size, typically in a TO-92, SOT-23, or SOIC package, allows for compact circuit designs. The TL431ID's versatility, precision, and reliability make it a popular choice among designers for both consumer and industrial electronics applications, where precise voltage regulation is crucial.
Equivalent
Features
1. Adjustable Output Voltage: It can be set to different voltages, typically from 2.5V to 36V, using an external resistor divider.
2. Precision: Offers tight voltage tolerance with low temperature coefficient, ensuring stable performance across varying conditions.
3. Wide Cathode Current Range: Operates effectively over a cathode current range of 1mA to 100mA.
4. Low Output Impedance: Provides excellent load regulation with a typical output impedance of 0.22 ohms.
5. Stability: Ensures stable operation with a wide range of capacitive loads.
6. Package Options: Available in various package types, including TO-92, SOT-23, and SOIC-8, offering flexibility for different applications.
7. Applications: Commonly used in power supplies, voltage monitoring, and as a reference element in precision circuits.
These features make the TL431ID a versatile and reliable choice for numerous electronic applications requiring precision voltage regulation.
Pinout
For the SOIC-8 package, the TL431ID uses these key pins:
1. Reference (Ref): This pin is used to set the reference voltage. By applying a voltage to this pin, you can program the output voltage.
2. Anode (A): This is the anode pin of the internal diode, typically connected to the ground in standard applications.
3. Cathode (K): This pin outputs the regulated voltage. It can sink current to maintain a stable voltage.
The TL431ID acts as an adjustable Zener diode, and its main function is to maintain a stable voltage across its cathode to anode terminals, which is programmable through the reference pin. This makes it useful in feedback loops for voltage regulation in power supplies and other circuits requiring a stable, adjustable reference voltage.
Manufacturer
Application
1. Voltage Regulation: It provides a stable reference voltage for linear and switching power supplies.
2. Feedback Control: Used in feedback loops of power supplies and regulators to maintain a constant output voltage.
3. Shunt Regulators: Functions as a shunt regulator in circuits to maintain voltage levels.
4. Battery Chargers: Ensures accurate control and monitoring of charging processes.
5. Overvoltage Protection: Used in protection circuits to prevent overvoltage conditions.
6. LED Drivers: Supports stable current and voltage regulation in LED driving circuits.
These applications leverage its precision and programmability for stable performance in diverse electronic systems.