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TL494CN Description

The TL494 device incorporates all the functions required in the construction of pulse-width modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application.

The TL494 device contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.

 

TL494CN CAD Models

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3D Models

TL494CN Features

  • Complete PWM Power-Control Circuitry
  • Uncommitted Outputs for 200-mA Sink or Source Current

  • Output Control Selects Single-Ended or Push-Pull Operation

  • Internal Circuitry Prohibits Double Pulse at Either Output

  • Variable Dead Time Provides Control Over Total Range

  • Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance

  • Circuit Architecture Allows Easy Synchronization

     

TL494CN Pinout and Configurations

 

Pin Number Pin Name DESCRIPTION
1 1IN+ Noninverting input to error amplifier 1
2 1IN-  Inverting input to error amplifier 1
16 2IN+ Noninverting input to error amplifier 2
15 2IN-  Inverting input to error amplifier 2
8 C1 The collector terminal of BJT output 1
11 C2 The collector terminal of BJT output 2
5 CT The capacitor terminal used to set the oscillator frequency
4 DTC Dead-time control comparator input
9 E1 The emitter terminal of BJT output 1
10 E2 The emitter terminal of BJT output 2
3 FEEDBACK Input pin for feedback
7 GND Ground
13 OUTPUT  CTRL Selects single-ended/parallel output or push-pull operation
14 REF The 5-V reference regulator output
6 RT The resistor terminal used to set the oscillator frequency
12 VCC Positive Supply

Specifications

Rochester Electronics, LLC TL494CN technical specifications, attributes, parameters and parts with similar specifications to Rochester Electronics, LLC TL494CN.

Attribute Value
Mounting Type Through Hole
Package / Case 16-DIP (0.300, 7.62mm)
Surface Mount NO
Operating Temperature 0°C~70°C TA
Packaging Tube
JESD-609 Code e0
Pbfree Code yes
Part Status Obsolete
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Number of Terminations 16
ECCN Code EAR99
Terminal Finish TIN LEAD
Terminal Position DUAL
Peak Reflow Temperature (Cel) 240
Time@Peak Reflow Temperature-Max (s) 30
Function Step-Up, Step-Down, Step-Up/Step-Down
Number of Outputs 2
Output Type Transistor Driver
Attribute Value
Input Voltage-Nom 15V
Analog IC - Other Type SWITCHING CONTROLLER
Output Configuration Positive
Voltage - Supply (Vcc/Vdd) 7V~40V
Control Features Dead Time Control, Frequency Control
Input Voltage (Min) 7V
Topology Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Control Mode VOLTAGE-MODE
Output Current-Max 0.5A
Frequency - Switching 1kHz~300kHz
Input Voltage (Max) 40V
Control Technique PULSE WIDTH MODULATION
Synchronous Rectifier No
Duty Cycle (Max) 45%
Output Phases 1
Height Seated (Max) 4.44mm
RoHS Status Non-RoHS Compliant

TL494CN Applications

• Desktop PCs

• Microwave Ovens

• Power Supplies: AC/DC, Isolated, With PFC, > 90 W

• Server PSUs

• Solar Micro-Inverters

• Washing Machines: Low-End and High-End

• E-Bikes

• Power Supplies: AC/DC, Isolated, No PFC, < 90 W

• Power: Telecom/Server AC/DC Supplies: Dual Controller: Analog

• Smoke Detectors

• Solar Power Inverters

TL494CN Block Diagram

TL494CN Manufacturer

Texas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. Its headquarters are in Dallas, Texas, United States. TI is one of the top ten semiconductor companies worldwide, based on sales volume. Texas Instruments's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing (DLP) technology and education technology products including calculators, microcontrollers, and multi-core processors.

TL494CN Alternatives

TL494CN Package

PDIP-16

Datasheet PDF

Documents

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Frequently Asked Questions

FAQ

How many pins does TL494CN have?
16 pins
What’s TL494CN maximum operating supply voltage?
40v
What’s TL494CN dimensions?
Length: 19.3mm/Height: 4.57mm/Width: 6.35mm
What’s TL494CN maximum operating temperature?
+70°C
What’s TL494CN Output current?
200 mA
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