TL494CN

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TL494CN

+物料清單

IC REG CTRLR BCK/PUSH-PULL 16DIP

  • 製造商安森美

  • 製造商部分 #TL494CN

  • 包裹 PDIP (N)-16

  • 有存貨5049

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正品保證

規格

屬性 價值
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)

概述

Description

The TL494CN is a versatile pulse-width modulation (PWM) control circuit designed for power supply applications. It is commonly utilized in switching mode power supplies, regulators, and DC-DC converters. The TL494CN integrates the necessary components to perform control functions such as error amplification, pulse-width modulation, and output switching.
Key features of the TL494CN include dual error amplifiers, an internal oscillator with a frequency range of 1 kHz to 300 kHz, a dead-time control comparator, and a 5V voltage reference. It supports both single-ended and push-pull configurations, allowing for flexibility in design. The device operates over a wide voltage range, typically from 7V to 40V.
The TL494CN enhances efficiency by adjusting the duty cycle of the PWM signal in response to changes in load conditions. This makes it ideal for applications requiring precise power control and regulation. Its popularity stems from its reliability, ease of use, and cost-effectiveness in various electronic circuits and systems.

Equivalent

The TL494CN chip, a PWM controller, has several equivalent products, including:
1. KA7500 by Fairchild/ON Semiconductor
2. SG3524 by Texas Instruments
3. UC3524 by Texas Instruments
4. NTE1749 by NTE Electronics
5. KA3525 by Fairchild/ON Semiconductor
6. LM3524 by National Semiconductor
These chips are often used interchangeably in power supply applications, with similar specifications and functionalities. Always check the datasheet for compatibility.

Features

The TL494CN is a versatile Pulse Width Modulation (PWM) controller used in power supply design. Key features include:
1. Dual PWM Outputs: It offers two PWM outputs that can be configured for either single-ended or push-pull operation.
2. Adjustable Dead Time: The device allows control over dead time, preventing cross-conduction in the power stage and enabling efficiency optimization.
3. Error Amplifiers: It includes two error amplifiers for voltage regulation and feedback signal processing.
4. On-Chip Oscillator: The TL494CN has an internal oscillator with a frequency range determined by external timing components.
5. Built-in Reference Voltage: A stable 5V reference voltage is provided, which is useful for precision requirements.
6. Wide Supply Voltage Range: It operates across a broad voltage range, typically from 7V to 40V.
7. Undervoltage Lockout: This feature protects the system by disabling the PWM outputs when the input voltage is too low.
8. Protection Features: It includes short-circuit protection and thermal shutdown capabilities.
These features make the TL494CN suitable for various applications, including switching power supplies and voltage regulation systems.

Pinout

The TL494CN is a pulse-width modulation (PWM) control IC commonly used for power supply and motor control applications. It comes in a 16-pin dual in-line package (DIP). Here is a brief overview of its pin functions:
1. Compensation (Pin 1): Used for frequency compensation or feedback.
2. Voltage Feedback (Pin 2): Takes the voltage feedback for regulation.
3. Dead-Time Control (Pin 3): Controls the dead-time between transitions.
4. C1 (Pin 4): Timing capacitor for setting oscillation frequency.
5. R1 (Pin 5): Timing resistor for setting oscillation frequency.
6. CT (Pin 6): Timing capacitor input.
7. Oscillator (Pin 7): Oscillator output.
8. GND (Pin 8): Ground connection.
9. C2 (Pin 9): Timing capacitor for setting oscillation frequency.
10. S2 (Pin 10): Second control switch.
11. S1 (Pin 11): First control switch.
12. VCC (Pin 12): Supply voltage input.
13. E1 (Pin 13): Error amplifier input.
14. E2 (Pin 14): Error amplifier input.
15. Output Control (Pin 15): Selects single-ended or push-pull output.
16. Reference Output (Pin 16): Provides a reference voltage.
The TL494CN is used to regulate and control power output in various applications, utilizing its internal error amplifiers, dead-time control, and PWM capabilities.

Manufacturer

The TL494CN is a pulse-width modulation (PWM) controller IC manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components, including integrated circuits, microcontrollers, and sensors. The company is well-known for its focus on analog chips and embedded processors, which are used in various industries like automotive, industrial, consumer electronics, and communications. Texas Instruments has a reputation for innovation and quality in the semiconductor field, with a strong emphasis on research and development to deliver advanced technology solutions.

Application

The TL494CN is a versatile integrated circuit primarily used in PWM (Pulse Width Modulation) control applications. Its main application areas include:
1. Switch-Mode Power Supplies (SMPS): It regulates output voltage and current efficiently.
2. DC-DC Converters: Utilized for voltage step-up or step-down applications.
3. Motor Speed Control: Facilitates precise speed regulation in DC motors.
4. Battery Chargers: Manages efficient charging cycles and voltage regulation.
5. Inverters: Converts DC to AC with PWM control for power optimization.
Its flexibility, including dual error amplifiers and an internal oscillator, makes it suitable for a wide range of power management solutions.

Package

The TL494CN is a Pulse Width Modulation (PWM) controller IC housed in a Dual Inline Package (DIP) with 16 pins. This package type is commonly used for through-hole mounting on printed circuit boards (PCBs).

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