Pinout of TL494
The Pinout diagram and pin details of TL494 are given below. We provide a Pin layout description and work in later sections.
This table lists the pin configuration of the pulse width modulation control circuit.
| Pin number | Pin name | Pin Configuration |
|---|---|---|
| 1 | 1IN+ | Input 1 for error amplifier one ( Non-Inverting) |
| 2 | 1IN- | Input 2 for error amplifier one ( Inverting) |
| 3 | FEEDBACK | Feedback connection pin from outputs |
| 4 | DTC | Input for dead-time control comparator |
| 5 | CT | Capacitor terminal to set frequency |
| 6 | RT | Resistor terminal to set frequency |
| 7 | GND | Ground pin for power supply |
| 8 | C1 | Collector pin of Output 1 |
| 9 | E1 | Emitter pin of Output 1 |
| 10 | E2 | Emitter pin of Output 2 |
| 11 | C2 | Collector pin of Output 2 |
| 12 | VCC | Positive Power supply pin |
| 13 | OUTPUT CTR | Select output mode from three options |
| 14 | REF | Reference for 5 volts regulator |
| 15 | 2IN- | Input 1 for error amplifier two ( Inverting) |
| 16 | 2IN+ | Input 1 for error amplifier two ( Non-Inverting) |
TL494 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
Technical Specifications
| Physical | |
| Case/Package | PDIP |
| Number of Pins | 16 |
| Weight | 951.693491 mg |
| Technical | |
| Duty Cycle | 45 % |
| Fall Time | 40 ns |
| Frequency | 300 kHz |
| Max Duty Cycle | 45 % |
| Max Frequency | 300 kHz |
| Max Operating Temperature | 85 °C |
| Max Supply Voltage | 40 V |
| Min Operating Temperature | -40 °C |
| Min Supply Voltage | 7 V |
| Nominal Input Voltage | 13 V |
| Number of Channels | 2 |
| Number of Outputs | 2 |
| Output Current | 200 mA |
| Output Type | Voltage |
| Output Voltage | 40 V |
| Reference Voltage | 5 V |
| Rise Time | 100 ns |
| Switching Frequency | 300 kHz |
| Tolerance | 5 % |
| Topology | Flyback, Push-Pull, Boost |
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