UC3843BD
IC REG CTRLR FLYBACK 14SOICManufacturer: onsemi
Categories: DC DC Switching Controllers
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The onsemi UC3843BD is a high-performance current-mode PWM controller designed for boost, flyback, and isolated buck-boost converter topologies. This 14-SOIC package features a wide operating voltage range of 7.6V to 30V and supports switching frequencies up to 500kHz. Its robust control features include frequency control, and it offers a maximum duty cycle of 96%. The UC3843BD is suitable for applications requiring positive, isolation-capable output with a single output phase. It is commonly utilized in power supply designs across industrial automation, consumer electronics, and telecommunications sectors.
Additional Information
Series: -RoHS Status: RoHS non-compliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: TubeDownload Free CAD Model:
Technical Details:
| Packaging | Tube |
| Package / Case | 14-SOIC (0.154"", 3.90mm Width) |
| Output Type | Transistor Driver |
| Mounting Type | Surface Mount |
| Function | Step-Up, Step-Up/Step-Down |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Output Configuration | Positive, Isolation Capable |
| Frequency - Switching | Up to 500kHz |
| Topology | Boost, Flyback |
| Voltage - Supply (Vcc/Vdd) | 7.6V ~ 30V |
| Supplier Device Package | 14-SOIC |
| Synchronous Rectifier | No |
| Control Features | Frequency Control |
| Serial Interfaces | - |
| Output Phases | 1 |
| Duty Cycle (Max) | 96% |
| Clock Sync | No |
| Number of Outputs | 1 |
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