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UC3875DWP
+NomenclatureIC OFFLINE SW FULL-BRDG 28SOIC
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FabricantTexas Instruments
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Pièce fabricant #UC3875DWP
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Fiche technique UC3875DWP DataSheet
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Package SOIC-28
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En stock4384
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Spécifications
| Attribut | Valeur |
| Package / Case | Tube |
| Part Status | Active |
| Output Isolation | Non-Isolated |
| Topology | Full-Bridge |
| Voltage - Start Up | 10.75 V |
| Voltage - Supply (Vcc/Vdd) | 9.5V ~ 20V |
| Duty Cycle | 100% |
| Frequency - Switching | 1MHz |
| Fault Protection | Current Limiting |
| Control Features | Frequency Control, Soft Start, Sync |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Supplier Device Package | 28-SOIC |
Présentation
Description
Key features of the UC3875DWP include programmable operating frequency, current-mode control for superior transient response, and a wide range of input voltage capabilities. It includes features such as soft-start, overcurrent protection, and under-voltage lockout to enhance system reliability and protect against fault conditions. The chip is encapsulated in a SOIC (Small Outline Integrated Circuit) package, which makes it suitable for compact designs.
The UC3875DWP is commonly used in applications requiring precise control of output voltage, such as telecommunications, computer systems, and industrial equipment. Its design facilitates ease of use in complex systems, allowing engineers to tailor power supply characteristics to specific needs.
Equivalent
1. UCC3808 series (e.g., UCC3808D) from Texas Instruments.
2. LT1248 from Analog Devices.
3. NCP1200 series from ON Semiconductor.
4. FAN7554 from Fairchild Semiconductor (now part of ON Semiconductor).
Ensure compatibility with specific design requirements when selecting an alternative.
Features
1. Current-Mode Control: Offers enhanced transient response and simple feedback loop design.
2. Programmable Oscillator Frequency: Allows flexibility in setting the desired switching frequency.
3. Synchronization Capability: Multiple controllers can be synchronized for parallel operation.
4. Soft-Start Function: Gradually ramps up the output voltage, reducing stress on components at startup.
5. Built-in Protection Features: Includes undervoltage lockout, overcurrent protection, and thermal shutdown to enhance system reliability.
6. High-Voltage Operation: Capable of operating at high voltages suitable for power supply applications.
7. Low Start-Up Current: Minimizes power consumption during startup.
8. Wide Temperature Range: Designed to operate efficiently in varying environmental conditions.
Overall, the UC3875DWP is ideal for applications requiring efficient and reliable power management solutions.
Pinout
Key functions and features include:
1. PWM Control: Provides precise control of the power output through adjustable duty cycles.
2. Soft Start: Prevents inrush current during start-up by gradually increasing the duty cycle.
3. Synchronization Capability: Allows synchronization with an external clock.
4. Protection Features: Includes undervoltage lockout and overcurrent protection to enhance reliability and safety.
5. Oscillator: An internal oscillator that sets the switching frequency of the PWM.
Overall, the UC3875DWP is designed for high-efficiency power management in various electronic devices.