Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Active |
| Reference Type | Shunt |
| Output Type | Adjustable |
| Voltage - Output (Min/Fixed) | 2.495V |
| Voltage - Output (Max) | 36 V |
| Current - Output | 100 mA |
| Tolerance | ±2.2% |
| Current - Cathode | 1 mA |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount |
Overview
Description
The TL431CPK is a precision programmable voltage reference commonly used in electronic circuits for voltage regulation and control. It belongs to the TL431 series, which is known for its adjustable shunt regulator capabilities. The device can maintain a stable output voltage over a wide range of operating conditions, making it ideal for applications requiring precise voltage regulation.
Key features of the TL431CPK include adjustable output voltage, typically ranging from 2.5V to 36V, and a typical output voltage tolerance of 0.5%. It operates over a wide temperature range, ensuring reliable performance in various environments. The device consists of a reference voltage source, error amplifier, and a series pass transistor, all integrated into a single package.
The TL431CPK is commonly used in switching power supplies, battery chargers, and other applications where accurate voltage control is crucial. It is available in different package types, allowing for flexibility in design and implementation. Overall, the TL431CPK is a versatile component that provides cost-effective solutions for voltage regulation needs.
Key features of the TL431CPK include adjustable output voltage, typically ranging from 2.5V to 36V, and a typical output voltage tolerance of 0.5%. It operates over a wide temperature range, ensuring reliable performance in various environments. The device consists of a reference voltage source, error amplifier, and a series pass transistor, all integrated into a single package.
The TL431CPK is commonly used in switching power supplies, battery chargers, and other applications where accurate voltage control is crucial. It is available in different package types, allowing for flexibility in design and implementation. Overall, the TL431CPK is a versatile component that provides cost-effective solutions for voltage regulation needs.
Equivalent
The TL431CPK is a precision programmable voltage reference. Equivalent products include:
1. LM431: A similar programmable shunt voltage reference.
2. TL431CLP Another version with comparable functionality.
3. AZ431: An alternative voltage reference with similar characteristics.
4. KA431: An equivalent reference offering similar performance.
5. AS431: A commonly used substitute in similar applications.
These equivalents typically offer similar voltage ranges, configurations, and performance characteristics.
1. LM431: A similar programmable shunt voltage reference.
2. TL431CLP Another version with comparable functionality.
3. AZ431: An alternative voltage reference with similar characteristics.
4. KA431: An equivalent reference offering similar performance.
5. AS431: A commonly used substitute in similar applications.
These equivalents typically offer similar voltage ranges, configurations, and performance characteristics.
Features
The TL431CPK is a precision programmable voltage reference with the following key features:
1. Adjustable Output Voltage: It allows for an output voltage that ranges from 2.5 V to 36 V, enabling flexibility in various applications.
2. Accuracy: Offers tight voltage regulation with a typical initial accuracy of ±2.0%, ensuring stable performance.
3. Temperature Stability: Designed to operate effectively across a broad temperature range, ensuring reliability in varying environmental conditions.
4. Low Output Impedance: Features a typical output impedance of 0.2 Ω, supporting better load regulation.
5. Reference Pin Current: Has a low reference pin current, minimizing the effect of varying load currents.
6. Cathode Current Range: Supports a cathode current range from 1 mA to 100 mA, providing flexible design options.
7. Package Options: Available in various package options to suit different design needs, including through-hole and surface-mount types.
These features make the TL431CPK suitable for applications in power supplies, adjustable power sources, and precision voltage regulation circuits.
1. Adjustable Output Voltage: It allows for an output voltage that ranges from 2.5 V to 36 V, enabling flexibility in various applications.
2. Accuracy: Offers tight voltage regulation with a typical initial accuracy of ±2.0%, ensuring stable performance.
3. Temperature Stability: Designed to operate effectively across a broad temperature range, ensuring reliability in varying environmental conditions.
4. Low Output Impedance: Features a typical output impedance of 0.2 Ω, supporting better load regulation.
5. Reference Pin Current: Has a low reference pin current, minimizing the effect of varying load currents.
6. Cathode Current Range: Supports a cathode current range from 1 mA to 100 mA, providing flexible design options.
7. Package Options: Available in various package options to suit different design needs, including through-hole and surface-mount types.
These features make the TL431CPK suitable for applications in power supplies, adjustable power sources, and precision voltage regulation circuits.
Pinout
The TL431CPK is a three-terminal adjustable shunt regulator. It typically comes in a TO-92 package, among others, and has three pins:
1. Ref (Reference): This pin is used to set the reference voltage. A resistor network can be connected to this pin to adjust the output voltage to the desired level.
2. Anode: This pin is typically connected to the ground or a negative rail in the application circuit. It acts as the sink for the output current.
3. Cathode: This pin is connected to the output voltage. It functions as the controlled terminal, where the regulation occurs. The cathode current is adjusted to maintain a stable output voltage as defined by the reference pin.
The TL431 is used in various applications for voltage regulation, such as in power supplies, where it provides a stable reference voltage and can be used in series with a pass transistor for higher current applications.
1. Ref (Reference): This pin is used to set the reference voltage. A resistor network can be connected to this pin to adjust the output voltage to the desired level.
2. Anode: This pin is typically connected to the ground or a negative rail in the application circuit. It acts as the sink for the output current.
3. Cathode: This pin is connected to the output voltage. It functions as the controlled terminal, where the regulation occurs. The cathode current is adjusted to maintain a stable output voltage as defined by the reference pin.
The TL431 is used in various applications for voltage regulation, such as in power supplies, where it provides a stable reference voltage and can be used in series with a pass transistor for higher current applications.
Manufacturer
The TL431CPK is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is an American technology company that designs and manufactures semiconductors and integrated circuits, which are used in electronic devices. TI is one of the largest manufacturers of analog technology components and digital embedded processors. The company is known for its innovation in designing and producing products for various markets, including industrial, automotive, personal electronics, communications equipment, and enterprise systems. Texas Instruments has a strong emphasis on research and development, which enables it to create cutting-edge technology solutions.
Application
The TL431CPK is a programmable precision voltage reference commonly used in various applications. Its primary uses include:
1. Voltage Regulation: It serves as a reference in linear and switching power supplies to maintain stable output voltage.
2. Shunt Regulator: It can be used as a shunt regulator in circuits to provide a precise voltage reference.
3. Overvoltage Protection: Used in protection circuits to prevent overvoltage conditions.
4. Analog Circuit Reference: Acts as a stable voltage reference for analog-to-digital converters and other analog circuits.
5. Battery Chargers: Ensures precise voltage levels for battery charging systems.
These applications leverage its ability to provide a stable and adjustable reference voltage.
1. Voltage Regulation: It serves as a reference in linear and switching power supplies to maintain stable output voltage.
2. Shunt Regulator: It can be used as a shunt regulator in circuits to provide a precise voltage reference.
3. Overvoltage Protection: Used in protection circuits to prevent overvoltage conditions.
4. Analog Circuit Reference: Acts as a stable voltage reference for analog-to-digital converters and other analog circuits.
5. Battery Chargers: Ensures precise voltage levels for battery charging systems.
These applications leverage its ability to provide a stable and adjustable reference voltage.
Package
The TL431CPK is commonly available in a TO-92 package type. This package is a through-hole, three-pin configuration widely used for linear voltage regulator applications.
