TL494IN Part Information

Details for TL494IN by Texas Instruments

Electronic & Electrical Components>Semiconductors - ICs>Power Management

Part Description

The TL494 device incorporates all the functions required in the construction of a pulse-widthmodulation (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. The error amplifiers exhibit a common-mode voltage range from –0.3 V to VCC – 2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The TL494 device provides for push-pull or singleended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility 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 is characterized for operation from –40°C to 85°C.

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Part Features

  • Circuit Architecture Allows Easy Synchronization
  • Complete PWM Power-Control Circuitry
  • Internal Circuitry Prohibits Double Pulse at Either Output
  • Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance
  • Output Control Selects Single-Ended or Push-Pull Operation
  • Uncommitted Outputs for 200-mA Sink or Source Current
  • Variable Dead Time Provides Control Over Total Range

Part Specifications

Input Voltage -
Output Voltage 40V
Output Current 200mA
Supply Voltage Min 7V
Supply Voltage Max 40V
Controller IC Case Style DIP
No. of Pins 16Pins
Frequency 300kHz
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL -
SVHC No SVHC (27-Jun-2018)
Controller Type PWM
Operating Temperature Range -40°C to +85°C
Output Type Voltage
Supply Voltage Range 7V to 40V
Termination Type Through Hole
RoHS Compliant

Alternative Part Descriptions

  • TL494I PWM controller 10kHz, DIP16 | RS Components
  • VOLTAGE MODE PWM CONTROLLER, 40V, 16-DIP; Input Voltage:-; Output Voltage:40V; Output Current:200mA; Supply Voltage Min:7V; Supply Voltage Max:40V; Controller IC Case Style:DIP; No. of Pins:16Pins; Frequency:300kHz; Product Range:- RoHS Compliant: Yes | Newark Electronics
  • Voltage Mode PWM Controller 40V 200mA 16-Pin PDIP Tube | Avnet America
  • 40V, 0.2A 300KHz PWM controller | Texas Instruments
  • Switching Controller [Texas Instruments] TL494IN Switching Controller | Distrelec

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