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TL494CD
IC REG CTRLR BCK/PSH-PULL 16SOIC
- Hersteller
- Fr. Teil #TL494CD
- Paket SOIC (D)-16
- Datenblatt
- Auf Lager7270
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Spezifikationen
| Package | Tube,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 | 0°C ~ 70°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 16-SOIC (0.154, 3.90mm Width) |
Übersicht
Description
Key features of the TL494CD include dual error amplifiers, an internal oscillator, a dead-time control comparator, a pulse-steering flip-flop, and a 5V reference regulator. These components allow for precise control of the output voltage and current. The IC supports both voltage-mode and current-mode control schemes, making it adaptable to various designs.
The TL494CD operates with a wide input voltage range and provides flexibility with an adjustable dead-time control, which helps prevent shoot-through conditions in the output stage. Its frequency of operation can be set by external timing components, typically a resistor and capacitor.
This IC is widely used in switch-mode power supplies (SMPS), DC-to-DC converters, inverters, and other applications where efficient power management is essential. Its reliability, ease of use, and cost-effectiveness make it a popular choice among engineers and designers.
Features
1. PWM Control: Provides pulse-width modulation for controlling power to loads, making it ideal for switch-mode power supplies.
2. Dual Output: It includes two outputs which can be used for push-pull or single-ended applications, enhancing flexibility.
3. Internal Reference: Has a precise 5V reference voltage to ensure stable and accurate operation.
4. Error Amplifiers: Two error amplifiers with common-mode input voltage range can be used for voltage regulation and feedback.
5. Adjustable Dead-Time Control: Allows the adjustment of the dead-time between switching outputs, crucial for optimizing efficiency and performance.
6. Built-In Oscillator: Features an internal oscillator with a frequency adjustable from 1 Hz to 300 kHz through external resistors and capacitors.
7. Undervoltage Lockout: Ensures stability by preventing operation at low supply voltages.
8. Short-Circuit Protection: Includes features for overcurrent and short-circuit protection to protect the circuit from damage.
9. Temperature Range: Designed to operate over a wide temperature range, enhancing reliability in various conditions.
These features make the TL494CD a robust choice for efficient power supply design and control systems.
Package
Pinout
1. Compensation: Stabilizes the feedback loop.
2. Feedback: Receives the feedback voltage for comparison.
3. Dead-Time Control: Adjusts the dead time between the two outputs.
4. CT (Timing Capacitor): Sets the oscillator frequency.
5. RT (Timing Resistor): Works with CT to set the oscillator frequency.
6. GND (Ground): Ground reference.
7. C1: Collector of the first internal transistor.
8. E1: Emitter of the first internal transistor.
9. E2: Emitter of the second internal transistor.
10. C2: Collector of the second internal transistor.
11. VCC: Power supply voltage.
12. Output Control: Selects between single-ended or push-pull output.
13. VREF: Provides a stable 5V reference output.
14. Error Amplifier Non-Inverting Input: Positive input for the error amplifier.
15. Error Amplifier Inverting Input: Negative input for the error amplifier.
16. Oscillator: Output of the internal oscillator.
These pins work together to control the PWM output based on feedback and timing configurations.
Manufacturer
Application
Equivalent
Versand
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Versandgebührenreferenz (DHL/FedEx):
DHL: Versandkosten reichen von $25-$45 (0.5kg), mit einer geschätzten Lieferzeit von 2-5 Werktagen.
von FedEx: Versandkosten reichen von $25-$40 (0.5kg), mit einer geschätzten Lieferzeit von 3-7 Werktagen.
UPS: Versandkosten reichen von $25-$45 (0.5kg), mit einer geschätzten Lieferzeit von 3-7 Werktagen.
TNT: Versandkosten reichen von $25-$65 (0.5kg), mit einer geschätzten Lieferzeit von 3-7 Werktagen.
EMS: Versandkosten reichen von $30-$50 (0.5kg), mit einer geschätzten Lieferzeit von 7-15 Werktagen.
Registrierte Luftpost: Versandkosten sind $ 2- $ 4 (0,1 kg), mit einer geschätzten Lieferzeit von 5-20 Werktagen.
Zahlungen
Payment Methods
Die Zahlungsfrist ist 100% Prepaid.
Derzeit akzeptieren wir nur die folgenden Zahlungsmethoden:
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3. Überweisung
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