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TL494ID
IC REG CTRLR MULT TOP 16SOIC
- Fabricant
- Mfr. Partie #TL494ID
- Paquet SOIC (D)-16
- Fiche de données
- En stock6650
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Spécifications
| Package | Bulk,Tube |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Down, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 7V ~ 40V |
| Frequency-Switching | 1kHz ~ 300kHz |
| DutyCycle(Max) | 45% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Dead Time Control, Frequency Control |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 16-SOIC (0.154, 3.90mm Width) |
Vue d'ensemble
Description
Key features of the TL494ID include its ability to drive two transistors in a push-pull or single-ended configuration, allowing for flexible power management solutions. The IC's dead-time control mechanism helps prevent overlap of the output transistors, enhancing efficiency and reducing power loss. Additionally, the TL494ID supports synchronization with external clocks and offers an adjustable duty cycle, making it suitable for various power supply designs.
The TL494ID is widely used in applications ranging from computer power supplies to industrial and consumer electronics, thanks to its reliability, ease of use, and cost-effectiveness. Its robust design makes it ideal for those seeking to build efficient power management systems.
Features
1. Dual Error Amplifiers: Allows for precise control of output voltage and current, enhancing regulation and performance.
2. Adjustable Dead Time Control: Ensures flexibility in switching characteristics, enabling optimization of efficiency and thermal performance.
3. On-Chip Oscillator: Provides frequency stability, reducing the need for external components and simplifying the design process.
4. PWM Comparator and Flip-Flop: Facilitates accurate control of duty cycles, crucial for effective power management and efficiency.
5. Built-in Feedback Loop: Ensures stability and control over output voltage or current, crucial for maintaining consistent operation.
6. Under-Voltage Lockout (UVLO): Protects the device from operating under insufficient voltage conditions, preventing potential damage.
7. Low Standby Current: Helps minimize power consumption, which is important for battery-powered applications.
8. Wide Supply Voltage Range: Enhances compatibility with various power source levels, broadening its applicability to different environments.
These features make the TL494ID suitable for a range of applications, including DC-DC converters, inverters, and other power control systems.
Package
Pinout
Here is a brief overview of the pin functions:
1. VREF: Reference voltage output.
2. C1, C2: Error amplifier 1 inverting and non-inverting inputs.
3. C3, C4: Error amplifier 2 inverting and non-inverting inputs.
4. DTC: Dead-time control input.
5. CT: Timing capacitor.
6. RT: Timing resistor.
7. GND: Ground.
8. C5: Feedback input.
9. C6: Output control input.
10. C7: Collector of the output transistor.
11. C8: Emitter of the output transistor.
12. VC: Supply voltage for the output stage.
13. VCC: Supply voltage.
14. C9, C10: Outputs for driving external components.
15. C11: Compensation pin.
16. NC: No connection.
The TL494ID is versatile, providing two error amplifiers for feedback, a fixed 5V reference output, and control features like dead-time control to prevent overlapping of the on-time of the outputs.
Manufacturer
Application
Equivalent
1. KA7500 - from Fairchild Semiconductor, similar PWM controller.
2. SG3524 - from Texas Instruments, another PWM controller.
3. UC3842 - a popular controller with similar functions, though some features may differ.
4. TL594 - a Texas Instruments PWM controller with similar capabilities.
These alternatives may have different specifications, so it's important to check compatibility with your specific application.
Expédition
Méthodes d'expéditionNous
offrir des services d'expédition mondiaux par DHL, FedEx, TNT, UPS ou tout autre expéditeur de votre choix.
Référence des frais d'expédition (DHL/FedEx):
DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.
FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.
Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.
Paiements
Payment Methods
Le terme de paiement est 100% prépayé.
Actuellement, nous n'acceptons que les méthodes de paiement ci-dessous:
1. PayPal
2. Carte de crédit/débit
3. Transfert bancaire
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