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TL494CD
IC REG CTRLR BCK/PSH-PULL 16SOIC
- 제조업체
- Mfr.부분 #TL494CD
- 패키지 SOIC (D)-16
- 데이터시트
- 재고 있음7270
100% 원래 &새로운
배송 준비 24 시간
365 일 보장
RFQ 및더 많은 할인
사양
| 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) |
개요
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
배송
배송 방법We
DHL, FedEx, TNT, UPS 또는 선택한 다른 운송업체를 통해 글로벌 배송 서비스를 제공합니다.
배송 요금 참조 (DHL/FedEx):
DHL은: 배송 비용은 $25-$45 (0.5kg)에서 2-5 영업일의 추정적 배달 시간이 있습니다.
FedEx는: 배송 비용은 $25-$40 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.
UPS는: 배송 비용은 $25-$45 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.
TNT는: 배송 비용은 $25-$65 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.
EMS는: 배송 비용은 $30-$50 (0.5kg)에서 7-15 영업일의 추정적 배달 시간을 제공합니다.
등록된 항공우편: 배송 비용은 $2-$4 (0.1kg), 예상 배달 시간 5-20 영업일.
지불
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