Products > Integrated Circuits (ICs) > Power Management ICs > TL494CN

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TL494CN

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Switching Controllers PWM Controller

  • Package/Case :
  • PDIP-16
  • Product Categories :
  • Voltage Mode PWM Controllers
  • RoHs Status:
  • Lead free / RoHS Compliant
  • Marking Code:
  • TL494CN
  • In-stock:
  • 126321

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TL494CN Product Details

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Description

The TL494CN device incorporates all the functions required in the construction of apulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supplycontrol, this device offers the flexibility to tailor the power-supply control circuitry to aspecific application.

The TL494CN device contains two error amplifiers, an on-chip adjustableoscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V,5%-precision regulator, and output-control circuits.

The error amplifiers exhibit a common-mode voltage range from –0.3 V toVCC– 2 V. The dead-time control comparator has a fixed offset that providesapproximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to thereference output and providing a sawtooth input to CT, or it can drive the common circuits insynchronous multiple-rail power supplies.

The uncommitted output transistors provide either common-emitter or emitter-followeroutput capability. The TL494CN device provides for push-pull or single-ended output operation, whichcan be selected through the output-control function. The architecture of this device prohibits thepossibility of either output being pulsed twice during push-pull operation.

The TL494C device is characterized for operation from 0°C to 70°C. The TL494I device ischaracterized for operation from –40°C to 85°C.

TL494CN

Feature

  • 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

All trademarks are the property of their respective owners.

Description

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

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

The error amplifiers exhibit a common-mode voltage range from –0.3 V toVCC– 2 V. The dead-time control comparator has a fixed offset that providesapproximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to thereference output and providing a sawtooth input to CT, or it can drive the common circuits insynchronous multiple-rail power supplies.

The uncommitted output transistors provide either common-emitter or emitter-followeroutput capability. The TL494 device provides for push-pull or single-ended output operation, whichcan be selected through the output-control function. The architecture of this device prohibits thepossibility of either output being pulsed twice during push-pull operation.

The TL494C device is characterized for operation from 0°C to 70°C. The TL494I device ischaracterized for operation from –40°C to 85°C.

TL494CN Products

TL494CN Block Diagram
(Picture: Diagram)

Technical Parameters

  • Number of Outputs
  • 2
  • Topology
  • Push-Pull
  • Output Voltage
  • 40 V
  • Output Current
  • 250 mA
  • Switching Frequency
  • 1 kHz to 300 kHz
  • Maximum Operating Temperature
  • + 70 C
  • Minimum Operating Temperature
  • 0 C
  • Package / Case
  • PDIP-16
  • Packaging
  • Tube
  • Fall Time
  • 40 ns
  • Mounting Style
  • Through Hole
  • Rise Time
  • 100 ns
  • Factory Pack Quantity
  • 25
  • Synchronous Pin
  • No

TL494CN Documents

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Estimated Delivery Time: May 18 - May 23 days (choose Expedited at checkout).

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We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.

Packing

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    Step1: Products

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    Step3: Anti-Static Bag

  • Step4:Individual packaging

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    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

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Guarantees

1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

FAQ:

Q: How does Jotrin guarantee that TL494CN is the original manufacturer or agent of TI?
We have a professional business development department to strictly test and verify the qualifications of TI original manufacturers and agents. All TI suppliers must pass the qualification review before they can publish their TL494CN devices; we pay more attention to the channels and quality of TL494CN products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of TL494CN chips? Including TI original factory information, Voltage Mode PWM Controllers application, TL494CN pictures?
You can use Jotrin's intelligent search engine, or filter by Semiconductors ; Power management ; Offline & isolated DC/DC controllers & converters category, or find it through Texas Instruments, Inc Information page.
Q: Are the TI's TL494CN price and stock displayed on the platform accurate?
The TI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for TL494CN, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of TL494CN?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the TL494CN we delivered, we will accept the replacement or return of the TL494CN only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of TL494CN.
(3)The TL494CN is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as TL494CN datasheet pdf, TL494 pin diagram?
Need any After-Sales service, please feel free contact us: sales@jotrin.com

Texas Instruments, Inc

TI
Texas Instruments Incorporated designs and manufactures analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. TI is a leader in semiconductor solutions for analog and digital embedded and applications processing....
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