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UCC28881D
+StücklisteIC OFFLINE SWITCH MULT TOP 7SOIC
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HerstellerTexas Instruments
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Herstellerteil #UCC28881D
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Paket SOIC-7
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Auf Lager2641
365 Tage Qualitätsgarantie
7*24 Stunden-Servicegarantie
90-Tage Kundendienstgarantie
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Spezifikationen
| Attribut | Wert |
| Package | Tube |
| ProductStatus | Active |
| OutputIsolation | Non-Isolated |
| InternalSwitch(s) | Yes |
| Voltage-Breakdown | 700V |
| Topology | Buck, Buck-Boost, Flyback |
| Voltage-StartUp | 3.9 V |
| Voltage-Supply(Vcc/Vdd) | 5V |
| DutyCycle | 55% |
| Frequency-Switching | 62kHz |
| Power(Watts) | 4.5 W |
| FaultProtection | Current Limiting, Over Load, Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| Package/Case | 8-SOIC (0.154, 3.90mm Width), 7 Leads |
| SupplierDevicePackage | 7-SOIC |
Übersicht
Description
Key features of the UCC28881D include a wide input voltage range and a built-in high-voltage startup circuit, reducing the need for external components. It also incorporates over-voltage and thermal shutdown protection to enhance reliability and safety. The device is designed to support flyback, buck, or boost converter topologies, thus offering flexibility in various design applications.
With its compact SOIC-7 package, the UCC28881D is suitable for space-constrained applications such as LED lighting, smart meters, and industrial power supplies, where efficiency and reliability are critical. Its design helps in minimizing standby power losses, contributing to overall energy efficiency in electronic systems.
Equivalent
1. LNK306PN from Power Integrations
2. TNY284DG from Power Integrations
3. VIPer22A from STMicroelectronics
These components are designed for similar applications in low-power offline switcher configurations, offering high-voltage MOSFETs and integrated control circuits. Always verify specific application requirements and electrical characteristics when selecting a substitute.
Features
1. Wide Input Voltage Range: Operates from 100 V to 700 V, accommodating global AC line voltages and industrial applications.
2. Integrated 700-V, 27-Ω Power MOSFET: Reduces the need for external components and simplifies design.
3. High-Efficiency Operation: Incorporates a primary-side regulation (PSR) to eliminate the need for an optocoupler while maintaining accurate output regulation.
4. Low Standby Power: Designed for low power consumption with a no-load power of less than 30 mW.
5. Internal Start-Up Regulator: Enables direct connection to the rectified AC line.
6. Protections: Includes over-voltage, over-current, and thermal shutdown protections to enhance reliability.
7. Compact Size: Available in a 7-pin SOIC package, making it suitable for space-constrained applications.
These features make the UCC28881D ideal for low to medium power applications such as LED lighting, metering, and auxiliary power supplies.
Pinout
1. VCC: Powers the internal circuitry of the IC.
2. GND: Ground reference for the IC.
3. VSENSE: Senses the output voltage and helps in regulation.
4. DRN: Drain of the internal MOSFET, connected to the supply voltage.
5. FB: Feedback input for regulating the output voltage.
6. COMP: Compensation input to stabilize the control loop.
7. SOURCE: Source of the internal MOSFET, typically connected to GND.
8. NC: No connection; not used.
The UCC28881D is used in switch-mode power supply applications, providing functions like voltage regulation, protection features, and efficient power conversion.