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TL494 Datasheet, PDF

Search Partnumber : Match&Start with "TL494" - Total : 274 ( 1/14 Page)

Manufacturer	Part #	Datasheet	Description
Texas Instruments	TL494	1Mb/37P	Pulse-Width-Modulation Control Circuits JULY 2022
ON Semiconductor	TL494	143Kb/12P	SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT April, 2004 ??Rev. 5
Texas Instruments	TL494	210Kb/8P	PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Texas Instruments	TL494	449Kb/17P	PULSE-WIDTH-MODULATION CONTROL CIRCUITS
ON Semiconductor	TL494	302Kb/14P	Switch mode Pulse Width Modulation Control Circuit August, 2021 - Rev. 7
Texas Instruments	TL494	614Kb/19P	PULSE-WIDTH-MODULATION CONTROL CIRCUITS
	TL494	616Kb/19P	PULSE-WIDTH-MODULATION CONTROL CIRCUITS
	TL494	590Kb/19P	PULSE-WIDTH-MODULATION CONTROL CIRCUITS
First Components Intern...	TL494	634Kb/11P	Switchmode Pulse Width Modulation Control Circuits
HTC Korea TAEJIN Techno...	TL494	142Kb/6P	Pulse-Width-Modulation Control Circuits
HTC Korea TAEJIN Techno...	TL494	102Kb/6P	Pulse-Width-Modulation Control Circuits
Unisonic Technologies	TL494	199Kb/7P	VOLTAGE MODE PWM CONTROL CIRCUIT
E-Tech Electronics LTD	TL494	291Kb/8P	VOLTAGE MODE PWM CONTROL CIRCUIT
ARTSCHIP ELECTRONICS CO...	TL494	671Kb/7P	SMPS Controller
Fairchild Semiconductor	TL494	56Kb/8P	SMPS Controller
Motorola, Inc	TL494	197Kb/12P	SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT
Unisonic Technologies	TL494-D16-T	189Kb/7P	VOLTAGE MODE PWM CONTROL CIRCUIT
	TL494-D16-T	199Kb/7P	VOLTAGE MODE PWM CONTROL CIRCUIT
	TL494-S16-R	189Kb/7P	VOLTAGE MODE PWM CONTROL CIRCUIT
	TL494-S16-R	199Kb/7P	VOLTAGE MODE PWM CONTROL CIRCUIT

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TL494 Datasheet, PDF [Distributor]

Distributor	Part #	Manufacturer Datasheet	Description	Buy Now
Element14	TL494BDR2G	ONSEMI	PWM CONTROLLER, 40KHZ, 40V, SOIC-16; Input Voltage:-; Output Voltage:-; Output Current:500mA; Supply...
	TL494BDR2G	ONSEMI	PWM CONTROLLER, 40KHZ, 40V, SOIC-16; Input Voltage:-; Output Voltage:-; Output Current:500mA; Supply...

Brief Description of TL494

The TL494 is a pulse-width modulation (PWM) control circuit often used in power supply and voltage regulation applications. It is designed to provide precise control of the duty cycle and frequency of the output waveform, making it suitable for various power conversion and motor control applications. Here are some key features and specifications of the TL494 PWM controller:

Pulse-Width Modulation (PWM): The TL494 generates a PWM output signal, which allows for precise control of the on-time and off-time of a switching element (usually a power transistor). This PWM signal is commonly used in switching power supplies to regulate the output voltage.

Error Amplifiers: The TL494 includes two error amplifiers that compare a reference voltage to a feedback voltage and generate an error signal, which is used to control the duty cycle of the PWM waveform.

Oscillator: The TL494 has an internal oscillator that sets the frequency of the PWM waveform. The oscillator frequency can typically be externally adjusted using external components.

Reference Voltage: The TL494 includes an internal voltage reference (commonly 5V) that serves as a reference for the error amplifiers.

Output: The TL494 has two complementary outputs, typically labeled as OUT and DISCHARGE, which are used to drive external power transistors. The OUT output generates the PWM signal, while the DISCHARGE output can be used for discharging capacitors or controlling external circuitry.

Shutdown Feature: The TL494 often includes a shutdown pin that can be used to disable the PWM operation when pulled low. This is useful for enabling or disabling the power supply.

Feedback and Compensation: The TL494 allows for the implementation of feedback loops and compensation networks to stabilize the control system in power supply applications.

Package: The TL494 is typically available in a dual-inline package (DIP) or surface-mount packages, making it suitable for various circuit board designs.

Equivalent for TL494

The TL494 is a versatile PWM (Pulse Width Modulation) controller IC commonly used in switching power supplies and DC-DC converters. If you're looking for replacements or alternatives, consider the following options:

Direct Replacements:
KA7500:

A direct equivalent to the TL494.
Identical specifications and pin configuration.
Widely used as an alternative.
SG3524:

Functionally similar with slightly different internal circuitry.
Compatible in most applications but verify exact needs.
SG3525:

Similar functionality with enhancements like better performance at higher frequencies.
Pin configuration differs, so adjustments may be necessary.
Upgraded or Enhanced Alternatives:
UC3844/UC3845:

A fixed-frequency current-mode PWM controller.
Provides better performance in current-mode control applications.
UC3525A:

Enhanced version of SG3525, offering better frequency stability and output drive capabilities.
LM494:

An updated version of TL494 with slight performance improvements.
Considerations for Choosing a Replacement:
Functionality:

Ensure the replacement supports the desired PWM control mode (voltage or current).
The TL494 supports dual-output PWM; verify if the replacement does as well.
Frequency Range:

Match the operating frequency range of your application.
Pin Configuration:

For a drop-in replacement, pin compatibility is crucial (KA7500 is pin-compatible).
Power and Efficiency:

Consider enhanced alternatives like UC3844/UC3845 for better efficiency and stability in modern designs.
Output Drive Capability:

Ensure the replacement can drive your power MOSFETs or IGBTs as required.
For most applications, KA7500 is the best direct replacement. If you're designing a new circuit or require better performance, alternatives like SG3525, UC3844, or UC3525A may be suitable, depending on your specific needs.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.

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