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TL494ID
IC REG CTRLR MULT TOP 16SOIC
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規格
| Package | Bulk,Tube |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Down, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 7V ~ 40V |
| Frequency-Switching | 1kHz ~ 300kHz |
| DutyCycle(Max) | 45% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Dead Time Control, Frequency Control |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 16-SOIC (0.154, 3.90mm Width) |
概述
Description
The TL494ID is a versatile integrated circuit used primarily for switching mode power supply (SMPS) applications. It is a pulse-width modulation (PWM) controller that delivers control and regulation of power systems. Featuring dual error amplifiers, an on-chip adjustable oscillator, a dead-time control comparator, and a 5V reference regulator, the TL494ID can efficiently manage power output to ensure stability and performance.
Key features of the TL494ID include its ability to drive two transistors in a push-pull or single-ended configuration, allowing for flexible power management solutions. The IC's dead-time control mechanism helps prevent overlap of the output transistors, enhancing efficiency and reducing power loss. Additionally, the TL494ID supports synchronization with external clocks and offers an adjustable duty cycle, making it suitable for various power supply designs.
The TL494ID is widely used in applications ranging from computer power supplies to industrial and consumer electronics, thanks to its reliability, ease of use, and cost-effectiveness. Its robust design makes it ideal for those seeking to build efficient power management systems.
Key features of the TL494ID include its ability to drive two transistors in a push-pull or single-ended configuration, allowing for flexible power management solutions. The IC's dead-time control mechanism helps prevent overlap of the output transistors, enhancing efficiency and reducing power loss. Additionally, the TL494ID supports synchronization with external clocks and offers an adjustable duty cycle, making it suitable for various power supply designs.
The TL494ID is widely used in applications ranging from computer power supplies to industrial and consumer electronics, thanks to its reliability, ease of use, and cost-effectiveness. Its robust design makes it ideal for those seeking to build efficient power management systems.
Features
The TL494ID is a versatile PWM (Pulse Width Modulation) controller designed for various power supply and control applications. Key features include:
1. Dual Error Amplifiers: Allows for precise control of output voltage and current, enhancing regulation and performance.
2. Adjustable Dead Time Control: Ensures flexibility in switching characteristics, enabling optimization of efficiency and thermal performance.
3. On-Chip Oscillator: Provides frequency stability, reducing the need for external components and simplifying the design process.
4. PWM Comparator and Flip-Flop: Facilitates accurate control of duty cycles, crucial for effective power management and efficiency.
5. Built-in Feedback Loop: Ensures stability and control over output voltage or current, crucial for maintaining consistent operation.
6. Under-Voltage Lockout (UVLO): Protects the device from operating under insufficient voltage conditions, preventing potential damage.
7. Low Standby Current: Helps minimize power consumption, which is important for battery-powered applications.
8. Wide Supply Voltage Range: Enhances compatibility with various power source levels, broadening its applicability to different environments.
These features make the TL494ID suitable for a range of applications, including DC-DC converters, inverters, and other power control systems.
1. Dual Error Amplifiers: Allows for precise control of output voltage and current, enhancing regulation and performance.
2. Adjustable Dead Time Control: Ensures flexibility in switching characteristics, enabling optimization of efficiency and thermal performance.
3. On-Chip Oscillator: Provides frequency stability, reducing the need for external components and simplifying the design process.
4. PWM Comparator and Flip-Flop: Facilitates accurate control of duty cycles, crucial for effective power management and efficiency.
5. Built-in Feedback Loop: Ensures stability and control over output voltage or current, crucial for maintaining consistent operation.
6. Under-Voltage Lockout (UVLO): Protects the device from operating under insufficient voltage conditions, preventing potential damage.
7. Low Standby Current: Helps minimize power consumption, which is important for battery-powered applications.
8. Wide Supply Voltage Range: Enhances compatibility with various power source levels, broadening its applicability to different environments.
These features make the TL494ID suitable for a range of applications, including DC-DC converters, inverters, and other power control systems.
Package
The TL494ID is a Pulse Width Modulation (PWM) controller integrated circuit available in a surface-mount package type known as Small Outline Integrated Circuit (SOIC)-16. This package type is compact and suitable for automated assembly processes, making it ideal for modern electronic designs requiring efficient space utilization.
Pinout
The TL494ID is a pulse-width modulation (PWM) controller IC commonly used for power supply and motor control applications. It is available in a 16-pin dual in-line package (DIP) and also in surface-mount packages.
Here is a brief overview of the pin functions:
1. VREF: Reference voltage output.
2. C1, C2: Error amplifier 1 inverting and non-inverting inputs.
3. C3, C4: Error amplifier 2 inverting and non-inverting inputs.
4. DTC: Dead-time control input.
5. CT: Timing capacitor.
6. RT: Timing resistor.
7. GND: Ground.
8. C5: Feedback input.
9. C6: Output control input.
10. C7: Collector of the output transistor.
11. C8: Emitter of the output transistor.
12. VC: Supply voltage for the output stage.
13. VCC: Supply voltage.
14. C9, C10: Outputs for driving external components.
15. C11: Compensation pin.
16. NC: No connection.
The TL494ID is versatile, providing two error amplifiers for feedback, a fixed 5V reference output, and control features like dead-time control to prevent overlapping of the on-time of the outputs.
Here is a brief overview of the pin functions:
1. VREF: Reference voltage output.
2. C1, C2: Error amplifier 1 inverting and non-inverting inputs.
3. C3, C4: Error amplifier 2 inverting and non-inverting inputs.
4. DTC: Dead-time control input.
5. CT: Timing capacitor.
6. RT: Timing resistor.
7. GND: Ground.
8. C5: Feedback input.
9. C6: Output control input.
10. C7: Collector of the output transistor.
11. C8: Emitter of the output transistor.
12. VC: Supply voltage for the output stage.
13. VCC: Supply voltage.
14. C9, C10: Outputs for driving external components.
15. C11: Compensation pin.
16. NC: No connection.
The TL494ID is versatile, providing two error amplifiers for feedback, a fixed 5V reference output, and control features like dead-time control to prevent overlapping of the on-time of the outputs.
Manufacturer
The TL494ID is manufactured by Texas Instruments, a leading global semiconductor company. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits, which are used in a wide array of electronic devices. The company is known for its innovation in semiconductor technology, and they provide solutions for industries such as automotive, industrial, personal electronics, and communications. The TL494ID, in particular, is a PWM (Pulse Width Modulation) controller, commonly used for power supply and motor control applications.
Application
The TL494ID is a pulse-width modulation (PWM) control IC commonly used in various applications such as switch-mode power supplies (SMPS), DC-DC converters, and voltage regulation systems. It is also utilized in battery chargers, motor speed controls, and inverter systems. Its flexibility, due to features like adjustable dead time, error amplifiers, and on-chip oscillators, makes it suitable for use in both consumer electronics and industrial power management solutions.
Equivalent
The TL494ID is a pulse-width-modulation (PWM) controller used in various power supply applications. Equivalent products include:
1. KA7500 - from Fairchild Semiconductor, similar PWM controller.
2. SG3524 - from Texas Instruments, another PWM controller.
3. UC3842 - a popular controller with similar functions, though some features may differ.
4. TL594 - a Texas Instruments PWM controller with similar capabilities.
These alternatives may have different specifications, so it's important to check compatibility with your specific application.
1. KA7500 - from Fairchild Semiconductor, similar PWM controller.
2. SG3524 - from Texas Instruments, another PWM controller.
3. UC3842 - a popular controller with similar functions, though some features may differ.
4. TL594 - a Texas Instruments PWM controller with similar capabilities.
These alternatives may have different specifications, so it's important to check compatibility with your specific application.
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