UC3843BDR2
IC REG CTRLR FLYBACK 14SOICManufacturer: onsemi
Categories: DC DC Switching Controllers
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The onsemi UC3843BDR2 is a high-performance current-mode PWM controller designed for off-line and DC-to-DC converter applications. This device features a voltage feed-forward capability, which allows for a constant switching frequency over a wide range of input voltages. Optimized for boost, flyback, and isolated output topologies, the UC3843BDR2 offers precise control over output voltage by regulating the duty cycle up to 96%. Its integrated circuitry includes a voltage reference, oscillator, error amplifier, current sensing comparator, and output driver. Operating from a 7.6V to 30V supply, this component is suitable for surface mount applications in its 14-SOIC package. It is widely employed in power supply designs for industrial controls, consumer electronics, and telecommunications equipment. The UC3843BDR2 is supplied in Tape & Reel packaging.
Additional Information
Series: -RoHS Status: RoHS non-compliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: Tape & Reel (TR)Download Free CAD Model:
Technical Details:
| Packaging | Tape & Reel (TR) |
| 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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