規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| 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 TL494IDR is a versatile pulse-width modulation (PWM) controller widely used in power supply and motor control circuits. Manufactured by Texas Instruments, this integrated circuit is designed to maintain precise voltage regulation and efficiency in power conversion systems.
Key features of the TL494IDR include an internal oscillator, error amplifiers, a dead-time control comparator, and a PWM comparator. It can operate over a wide range of frequencies, allowing designers to tailor it to specific applications. The dual-channel capability supports push-pull or single-ended configurations, providing flexibility in design.
The device operates within a voltage range of 7V to 40V, making it suitable for various applications, from desktop power supplies to automotive systems. Its built-in protection mechanisms, such as overcurrent and thermal shutdown, enhance reliability and safety.
The TL494IDR comes in a standard SOIC-16 package, simplifying integration into circuit boards. Its ease of use, combined with robust performance, makes it a popular choice for engineers designing efficient and reliable power electronics solutions.
Key features of the TL494IDR include an internal oscillator, error amplifiers, a dead-time control comparator, and a PWM comparator. It can operate over a wide range of frequencies, allowing designers to tailor it to specific applications. The dual-channel capability supports push-pull or single-ended configurations, providing flexibility in design.
The device operates within a voltage range of 7V to 40V, making it suitable for various applications, from desktop power supplies to automotive systems. Its built-in protection mechanisms, such as overcurrent and thermal shutdown, enhance reliability and safety.
The TL494IDR comes in a standard SOIC-16 package, simplifying integration into circuit boards. Its ease of use, combined with robust performance, makes it a popular choice for engineers designing efficient and reliable power electronics solutions.
Equivalent
The TL494IDR is a pulse-width modulation (PWM) controller IC. Equivalent products to the TL494IDR include the KA7500, UC3842, and SG3525. These ICs are commonly used in power supply designs and offer similar functionalities for PWM control. However, differences in electrical characteristics or features may exist, so it is important to check the specific datasheets to ensure compatibility with your application's requirements.
Features
The TL494IDR is a versatile PWM (Pulse Width Modulation) controller designed for switching power supply applications. Key features of the TL494IDR include:
1. PWM Control: It supports fixed-frequency operation with pulse-width modulation to regulate output voltage.
2. Dual Output: The device provides dual outputs for push-pull or single-ended applications.
3. Error Amplifier: It includes two error amplifiers with a common-mode input range, suitable for wide voltage ranges.
4. Adjustable Dead Time Control: The dead time between switching transistors is adjustable, enhancing efficiency and reducing power loss.
5. On-Chip Oscillator: The internal oscillator can be programmed for a wide range of frequencies using external resistors and capacitors.
6. Undervoltage Lockout: It ensures proper operation during power-up and prevents operation under low voltage conditions.
7. Output Control: The device offers output control for push-pull or single-ended operation.
8. Low Standby Current: Designed for low power consumption, improving overall efficiency.
9. Temperature Range: It operates over a wide temperature range from -40°C to 85°C.
10. Package: Available in SOIC-16 packaging for compact applications.
These features make the TL494IDR suitable for various power supply designs requiring efficient and precise control.
1. PWM Control: It supports fixed-frequency operation with pulse-width modulation to regulate output voltage.
2. Dual Output: The device provides dual outputs for push-pull or single-ended applications.
3. Error Amplifier: It includes two error amplifiers with a common-mode input range, suitable for wide voltage ranges.
4. Adjustable Dead Time Control: The dead time between switching transistors is adjustable, enhancing efficiency and reducing power loss.
5. On-Chip Oscillator: The internal oscillator can be programmed for a wide range of frequencies using external resistors and capacitors.
6. Undervoltage Lockout: It ensures proper operation during power-up and prevents operation under low voltage conditions.
7. Output Control: The device offers output control for push-pull or single-ended operation.
8. Low Standby Current: Designed for low power consumption, improving overall efficiency.
9. Temperature Range: It operates over a wide temperature range from -40°C to 85°C.
10. Package: Available in SOIC-16 packaging for compact applications.
These features make the TL494IDR suitable for various power supply designs requiring efficient and precise control.
Pinout
The TL494IDR is a pulse-width modulation (PWM) controller commonly used for switch-mode power supplies. It is typically housed in a 16-pin package. Below is a concise description of its pin functions:
1. Comp (1, 2): Error Amplifier Inputs.
2. Dead Time Control (4): Adjusts dead-time between outputs.
3. C1, R1 (5, 6): Timing Capacitor and Resistor to set oscillator frequency.
4. GND (7): Ground.
5. CT (8): Timing Capacitor for oscillator frequency.
6. C2, R2 (9, 10): Additional Capacitor and Resistor for oscillator.
7. VC (11): Output Control Voltage.
8. Vref (12): Reference Voltage Output, typically 5V.
9. VCC (13): Supply Voltage.
10. E1, E2 (14, 15): Emitter Pins for transistor outputs.
11. V01, V02 (16, 17): Collector Pins for output transistors.
The TL494IDR is designed for efficient power regulation by controlling the duty cycle of its outputs, making it ideal for applications in power supply circuits.
1. Comp (1, 2): Error Amplifier Inputs.
2. Dead Time Control (4): Adjusts dead-time between outputs.
3. C1, R1 (5, 6): Timing Capacitor and Resistor to set oscillator frequency.
4. GND (7): Ground.
5. CT (8): Timing Capacitor for oscillator frequency.
6. C2, R2 (9, 10): Additional Capacitor and Resistor for oscillator.
7. VC (11): Output Control Voltage.
8. Vref (12): Reference Voltage Output, typically 5V.
9. VCC (13): Supply Voltage.
10. E1, E2 (14, 15): Emitter Pins for transistor outputs.
11. V01, V02 (16, 17): Collector Pins for output transistors.
The TL494IDR is designed for efficient power regulation by controlling the duty cycle of its outputs, making it ideal for applications in power supply circuits.
Manufacturer
The TL494IDR is manufactured by Texas Instruments, a global technology company headquartered in Dallas, Texas. Texas Instruments is renowned for its design, manufacturing, and sales of semiconductors and various integrated circuits, which are used in a wide array of electronic devices and systems. The company operates in several key areas, including analog electronics, embedded processing, and digital light processing technologies. Texas Instruments serves a broad range of industries, including automotive, industrial, consumer electronics, communications, and computing sectors. With a strong focus on innovation and development, Texas Instruments plays a crucial role in advancing modern electronics and technology solutions.
Application
The TL494IDR is a versatile PWM (Pulse Width Modulation) controller used primarily in switch-mode power supply (SMPS) designs. Its applications include DC-DC converters, inverters, battery chargers, and voltage regulation circuits. It provides features such as adjustable dead-time control, error amplifiers, and a stable reference voltage, making it suitable for power management in consumer electronics, industrial equipment, and automotive systems. The device is also utilized in motor speed controls and LED drivers due to its efficiency and flexibility in managing power output. Its compact size and reliable performance make it a popular choice for designers seeking efficient power control solutions.
Package
The TL494IDR is a PWM controller IC that comes in a SOIC-16 package type. This surface-mount package features 16 pins and is commonly used in power supply applications due to its compact form and efficient heat dissipation characteristics.
