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TL494IN
+БОМIC REG CTRLR BCK/PUSH-PULL 16DIP
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ПроизводительОнсеми
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Мфр. Часть #TL494IN
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Пакет 16-DIP (0.300, 7.62mm)
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В наличии6975
365 Дни гарантии качества
7*24 часы обслуживания каранти
90-гарантия послепродажного дня
Гарантия подлинного продукта
Спецификации
| Атрибут | Ценность |
| Package | Tube |
| Series | SWITCHMODE™ |
| ProductStatus | Obsolete |
| OutputType | Transistor Driver |
| Function | Step-Down, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck, Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 7V ~ 40V |
| Frequency-Switching | 200kHz |
| DutyCycle(Max) | 48% |
| SynchronousRectifier | Yes |
| ClockSync | No |
| ControlFeatures | Dead Time Control, Frequency Control |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Through Hole |
| Package/Case | 16-DIP (0.300, 7.62mm) |
Обзор
Description
Key features of the TL494IN include dual error amplifiers, an adjustable oscillator, a dead-time control comparator, and a pulse-steering flip-flop, which facilitates both single-ended and push-pull operations. The IC operates over a wide supply voltage range and offers a stable reference voltage output, making it suitable for various power management tasks.
The TL494IN improves regulation accuracy and efficiency by incorporating error amplifiers that compare the feedback signal with a reference voltage, adjusting the duty cycle accordingly. Its wide operating temperature range and robust construction make it suitable for industrial and consumer electronics applications. Overall, the TL494IN provides a reliable and efficient solution for designing and managing PWM-based power systems.
Equivalent
Features
1. Dual PWM Outputs: It provides two PWM outputs that can be configured for either single-ended or push-pull operation.
2. Internal Circuitry: Contains error amplifiers, a dead-time control comparator, a pulse-steering flip-flop, a 5V reference voltage, an oscillator, and a PWM comparator, minimizing the need for external components.
3. Adjustable Output: Users can adjust the duty cycle of the PWM outputs for precise control over power delivery.
4. Oscillator: Features an internal oscillator frequency range of 1 kHz to 300 kHz, adjustable with external resistors and capacitors.
5. Dead-Time Control: Provides programmable dead-time, ensuring safe switching with minimal overlap.
6. Reference Voltage: Supplies a stable 5V reference output, aiding various applications.
7. Wide Supply Voltage: Operates over a range of 7V to 40V, making it suitable for various applications.
8. Protection Features: Includes built-in protection features like undervoltage lockout and overload protection.
The TL494IN is a reliable choice for efficient power management systems due to its flexibility and robust feature set.
Pinout
Here's a brief overview of its pin functions:
1. Pins 1 & 2 (C1 & C2): Dead-time control, used to set the dead time between the outputs.
2. Pins 3 & 4 (E1 & E2): Error amplifiers inverting inputs.
3. Pin 5: Feedback input, compares output voltage with a reference.
4. Pin 6: Voltage reference output.
5. Pin 7: Ground.
6. Pin 8: Collector of output transistor B.
7. Pin 9: Emitter of output transistor B.
8. Pin 10: Emitter of output transistor A.
9. Pin 11: Collector of output transistor A.
10. Pin 12: VCC, Power supply input.
11. Pin 13: Output control, sets single-ended or push-pull mode.
12. Pin 14: Reference voltage bypass.
13. Pin 15: Oscillator timing capacitor.
14. Pin 16: Oscillator timing resistor.
These pins allow the TL494IN to control the duty cycle of switching transistors, making it ideal for regulating voltage and controlling power levels.