UC3844BD
IC REG CTRLR PWM CM 14-SOICManufacturer: onsemi
Categories: DC DC Switching Controllers
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The onsemi UC3844BD is a high-performance current-mode PWM controller designed for Boost, Flyback, and isolated output topologies. This 14-SOIC package device offers precise control with a maximum duty cycle of 48% and operates at switching frequencies up to 500kHz. Featuring frequency control and a single positive output configuration, the UC3844BD is suitable for step-up and step-up/step-down DC-DC conversion applications. Its transistor driver output type makes it ideal for driving external power switches. The device operates within a supply voltage range of 10V to 36V and is rated for an operating temperature of 0°C to 70°C. This component finds application in power supply units, industrial controls, and adapter designs.
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) | 10V ~ 36V |
| Supplier Device Package | 14-SOIC |
| Synchronous Rectifier | No |
| Control Features | Frequency Control |
| Serial Interfaces | - |
| Output Phases | 1 |
| Duty Cycle (Max) | 48% |
| Clock Sync | No |
| Number of Outputs | 1 |
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