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TL494CD
IC REG CTRLR BCK/PSH-PULL 16SOIC
- Fabricante
- Mfr. Parte #TL494CD
- Paquete SOIC (D)-16
- Hoja de datos
- En stock7270
100% original & Nuevo
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Especificaciones
| 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) |
Descripción general
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
Envío
Métodos de envíoNosotros
ofrecer servicios de envío globales a través de DHL, FedEx, TNT, UPS, o cualquier otro expediente de su elección.
Referencia de tarifas de envío (DHL/FedEx):
DHL: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 2-5 días hábiles.
FedEx: El costo de envío oscila entre $25-$40 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.
UPS: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.
TNT: El costo de envío oscila entre $25-$65 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.
EMS: El costo de envío oscila entre $30-$50 (0.5kg), con un plazo de entrega estimado de 7-15 días hábiles.
Correo aéreo registrado: El costo de envío es de $2-$4 (0.1kg), con un tiempo de entrega estimado de 5-20 días hábiles.
Pagos
Payment Methods
El plazo de pago es 100% prepagado.
Actualmente, solo aceptamos los siguientes métodos de pago:
1. de PayPal
2. Tarjeta de crédito/débito
3. Transferencia bancaria
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