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UC28025DW
+StücklisteIC REG CTRLR MULT TOP 16SOIC
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HerstellerTexas Instruments
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Herstellerteil #UC28025DW
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Paket SOIC-16
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Auf Lager2195
365 Tage Qualitätsgarantie
7*24 Stunden-Servicegarantie
90-Tage Kundendienstgarantie
Originalproduktgarantie
Spezifikationen
| Attribut | Wert |
| Package | Bulk,Tube |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 2 |
| Voltage-Supply(Vcc/Vdd) | 9V ~ 30V |
| Frequency-Switching | 340kHz ~ 460kHz |
| DutyCycle(Max) | 45% |
| SynchronousRectifier | Yes |
| ClockSync | No |
| ControlFeatures | Current Limit, Enable, Frequency Control, Ramp, Soft Start |
| OperatingTemperature | -40°C ~ 105°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 16-SOIC (0.295, 7.50mm Width) |
Übersicht
Description
Key features of the UC28025DW include:
1. Programmable Oscillator: Offers a wide frequency range, allowing for flexibility in various applications.
2. Dual Output: Provides dual alternating outputs, facilitating the drive of push-pull or half-bridge configurations.
3. Precision Voltage Reference: Ensures stable and accurate voltage regulation.
4. Current Sense Capability: Enhances protection by enabling overcurrent protection features.
5. Synchronization Features: Allows for synchronization with external signals, useful in multi-controller systems.
These characteristics make the UC28025DW suitable for applications in power supplies, motor controllers, and other systems requiring precise control of power conversion processes. Its robust design and features contribute to its popularity among engineers designing power management solutions.
Equivalent
1. TI UC3825 - A similar PWM controller from Texas Instruments.
2. ON Semiconductor NCP1653 - Offers high-performance features.
3. STMicroelectronics L6562 - A comparable transition mode PFC controller.
4. Fairchild/ON Semiconductor KA3525A - A PWM controller with similar applications.
Make sure to check the datasheets for compatibility and specific application requirements.
Features
1. Wide Input Voltage Range: Operates efficiently over a broad input voltage range.
2. Current Mode Control: Provides accurate output control and fast transient response.
3. Fixed Frequency Operation: Ensures stable operation with programmable frequency settings.
4. High Output Drive: Capable of driving power MOSFETs with high peak current capabilities.
5. Undervoltage Lockout (UVLO): Protects the system by shutting down the device at low input voltages.
6. Soft-Start Function: Gradually increases the duty cycle to prevent inrush current at startup.
7. Synchronization Capability: Allows multiple controllers to operate in synchrony for complex systems.
8. Low Start-Up Current: Reduces power consumption and supports energy-efficient designs.
9. Overcurrent Protection: Safeguards against excessive current conditions.
10. Thermal Shutdown: Protects the device from damage due to overheating.
These features make the UC28025DW suitable for a variety of power supply designs, offering reliability and efficiency.
Pinout
Here is a concise description of the pin functions:
1. COMP: Compensation for the error amplifier.
2. FB: Feedback input from the output.
3. CS: Current sense input.
4. RT/CT: Timing resistor and capacitor to set oscillator frequency.
5. SYNC: Synchronization input.
6. VREF: Reference voltage output.
7. AOUT: Channel A output.
8. GND: Ground.
9. VCC: Supply voltage input.
10. BOUT: Channel B output.
11. PGND: Power ground.
12. VCLK: Clock output for synchronization.
13. DTC: Dead time control.
14. RAMP: Ramp input for current-mode control.
15. SLOPE: Slope compensation input.
16. SD: Shutdown to disable outputs.
These pins collectively enable effective control of power supply outputs and provide necessary protection features, ensuring reliability and performance in power management applications.
Manufacturer
Application
1. Switching Power Supplies: Used in designing efficient DC-DC and AC-DC converters.
2. Telecommunications: Provides power management solutions for telecom systems.
3. Data Centers: Helps in managing power distribution and conversion within servers.
4. Industrial Equipment: Utilized in motor drives and industrial power supplies.
5. Consumer Electronics: Powers devices like televisions and audio systems.
6. Automotive: Supports power management in electric and hybrid vehicles.
Its high-frequency operation and dual output make it versatile for various high-efficiency, high-density power conversion applications.