TL494CN

TL494CN

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TL494CN
IC REG CTRLR BCK/PUSH-PULL 16DIP
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$0.08

Price update:a months ago
Available in stock: 230000
45
Serves customers in 45 countries
1000+
Worldwide Manufacturers
$140M
$140M Growth in 5 Years
50.0M+
50M Parts Shipped in 5 Years
Texas Instruments

Texas Instruments

Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.

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TL494CN Products

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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.

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.

Product Attributes

TYPE DESCRIPTION Select all
Product Status Obsolete
Clock Sync No
Synchronous Rectifier Yes
Frequency - Switching 200kHz
Voltage - Supply (Vcc/Vdd) 7V ~ 40V
Output Phases 1
Supplier Device Package 16-PDIP
Number of Outputs 2
Package / Case 16-DIP (0.300", 7.62mm)
Topology Buck, Push-Pull
Mounting Type Through Hole
Output Configuration Positive
Operating Temperature 0°C ~ 70°C (TA)
Function Step-Down, Step-Up/Step-Down
Control Features Dead Time Control, Frequency Control
Output Type Transistor Driver
Package Tube
Series SWITCHMODE™
Duty Cycle (Max) 48%

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$0.08

Price update:a months ago
Available in stock: 230000
Texas Instruments

Texas Instruments

Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.

View All Product from Texas Instruments

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