UC3844AD1
IC REG CTRLR BST FLYBK ISO 8SOICManufacturer: STMicroelectronics
Categories: DC DC Switching Controllers
Quality Control: Learn More
The STMicroelectronics UC3844AD1 is a high-performance, fixed-frequency current-mode PWM controller. Designed for boost, flyback, and isolated output topologies, this device features a ±1% reference voltage and a 48% maximum duty cycle. Its operating frequency can be set up to 500kHz, offering flexibility in component selection and power density. The UC3844AD1 includes features such as undervoltage lockout with hysteresis, current-mode control for superior transient response and inherent pulse-by-pulse current limiting, and a soft-start function. The output stage is a high-side, N-channel MOSFET driver. This component is suitable for a wide range of applications including power supplies for industrial automation, consumer electronics, and lighting systems. It is available in an 8-SOIC package and operates within a temperature range of 0°C to 70°C.
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 | 8-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 ~ 30V |
| Supplier Device Package | 8-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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