TL494CN

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TL494CN

IC REG CTRLR BCK/PUSH-PULL 16DIP

  • Nhà sản xuất
  • Ông. Phần #TL494CN
  • Gói PDIP (N)-16
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  • Có sẵn2811

100% gốc & amp; Mới

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Bảo hành 365 ngày

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Thông số kỹ thuật

Package Tube,Tube
Series SWITCHMODE™
ProductStatus Obsolete
OutputType Transistor Driver
Function Step-Down, Step-Up/Step-Down
OutputConfiguration Positive
Topology Buck, Push-Pull
NumberofOutputs 2
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 7V ~ 40V
Frequency-Switching 200kHz
DutyCycle(Max) 48%
SynchronousRectifier Yes
ClockSync No
ControlFeatures Dead Time Control, Frequency Control
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Through Hole
Package/Case 16-DIP (0.300, 7.62mm)

Tổng quan

Description

The TL494CN is a versatile pulse-width modulation (PWM) control circuit primarily used in switch-mode power supplies and other power control applications. Manufactured by Texas Instruments, this integrated circuit (IC) is designed to offer efficient control of DC-DC converters, inverters, and motor speed controls.
Key features of the TL494CN include dual error amplifiers, an adjustable dead-time control comparator, on-chip oscillator, a 5V precision reference voltage, and output control circuitry. These features enable the IC to maintain stable and efficient power regulation. The dual error amplifiers allow for easier feedback control, enhancing accuracy and reliability in various applications.
The TL494CN supports both voltage and current mode control, providing flexibility in design. Its adjustable dead-time control helps prevent power transistors from overlapping, thus reducing shoot-through and improving efficiency. The IC operates within a wide voltage range and can deliver output currents up to 200 mA.
Overall, the TL494CN is favored for its cost-effectiveness, reliability, and ability to simplify power management in electronic devices.

Features

The TL494CN is a versatile PWM (Pulse Width Modulation) controller designed for efficient control of DC-DC converters and other types of power supplies. Key features include:
1. PWM Control: It supports single-ended or push-pull configurations, making it suitable for various power supply designs.

2. Built-in Oscillator: Operates from a single resistor and capacitor, providing flexibility in setting the frequency.
3. Error Amplifiers: Two error amplifiers are integrated for precise voltage regulation and feedback control.
4. Dead-Time Control: Provides adjustable dead-time to prevent overlap in switching, enhancing efficiency and safety.
5. On-Chip Reference: A stable 5V reference voltage is provided for consistent operation and accuracy.
6. Output Transistors: Includes two transistor outputs that can be configured for different switching applications.
7. Undervoltage Lockout: Ensures proper operation by preventing the circuit from starting until it reaches the correct voltage.
8. Wide Supply Voltage Range: Operates effectively between 7V to 40V, accommodating various input conditions.
The TL494CN is widely used in applications requiring reliable and adjustable PWM control, such as switching power supplies, battery chargers, and motor speed controllers.

Package

The TL494CN is typically available in a Dual In-Line Package (DIP) with 16 pins. This package type is commonly used for through-hole mounting on printed circuit boards (PCBs).

Pinout

The TL494CN is a pulse-width modulation (PWM) controller integrated circuit commonly used for power supply regulation and other applications requiring PWM control. It comes in a 16-pin dual-inline package (DIP).
Here is a brief overview of its pin functions:
1. Compensation (Pin 1): Used for error amplifier compensation.
2. Feedback (Pin 2): Input for feedback voltage.
3. Dead-Time Control (Pin 3): Sets the dead-time of the output.
4. C1 (Pin 4): Timing capacitor for oscillator frequency.
5. R1 (Pin 5): Timing resistor for oscillator frequency.
6. C2 (Pin 6): Additional capacitor for oscillator frequency.
7. GND (Pin 7): Ground connection.
8. C3 (Pin 8): Sets the frequency of the oscillator.
9. VCC (Pin 12): Supply voltage.
10. Output Control (Pin 13): Determines the output configuration.
11. Collector Output A (Pin 10) & Emitter Output A (Pin 9): Transistor A outputs.
12. Collector Output B (Pin 11) & Emitter Output B (Pin 8): Transistor B outputs.
13. VREF (Pin 14): Reference voltage output.
14. Error Amplifier Inverting Input (Pin 15) & Non-Inverting Input (Pin 16): Inputs for the error amplifier.
This setup enables the TL494CN to control the duty cycle and regulate power supply outputs efficiently.

Manufacturer

The TL494CN is a pulse-width modulation (PWM) controller manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company known for designing and manufacturing semiconductors and various integrated circuits. It is one of the largest semiconductor companies globally and is recognized for its innovations in the field of electronics. TI's products are widely used in various applications, including industrial systems, automotive, personal electronics, and communications equipment.

Application

The TL494CN is a versatile PWM controller used in various applications including switch-mode power supplies, DC-DC converters, and battery chargers. It is often employed in power management for computers, telecommunications, and consumer electronics. Its ability to control output voltage and current makes it suitable for voltage regulation and power factor correction. Additionally, it can be used in motor speed controls and as a part of inverters in renewable energy systems. Its flexibility and reliability make it popular in both commercial and industrial power management solutions.

Equivalent

The TL494CN is a pulse-width modulation (PWM) control IC. Equivalent or similar products include the KA7500 by Fairchild Semiconductor, the SG3524 by Texas Instruments or STMicroelectronics, and the UC3842 series for certain applications. These alternatives offer similar functionality in terms of PWM control for power supply and regulation applications. Always check the specific datasheets to ensure compatibility with your application.

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