L5991AD
IC REG CTRLR FLYBACK 16SOManufacturer: STMicroelectronics
Categories: DC DC Switching Controllers
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The STMicroelectronics L5991AD is a high-performance flyback controller designed for isolated and non-isolated power supplies. This 16-SOIC package device offers precise control for step-up/step-down DC-DC conversion with a maximum duty cycle of 93% and switching frequencies up to 1MHz. Key control features include current limiting, frequency control, and soft-start for robust operation. The positive output configuration is isolation capable, and the device incorporates synchronous rectification for improved efficiency. Its operating temperature range of -40°C to 150°C (TJ), coupled with a supply voltage range of 7.6V to 20V, makes it suitable for demanding applications in industrial, automotive, and consumer electronics sectors. The L5991AD is presented in a 16-SO (Surface Mount) package, supplied in tubes.
Additional Information
Series: -RoHS Status: ROHS3 CompliantManufacturer Lead Time: 35 week(s)Product Status: ActivePackaging: TubeDatasheet:Download Free CAD Model:
Technical Details:
| Packaging | Tube |
| Package / Case | 16-SOIC (0.154"", 3.90mm Width) |
| Output Type | Transistor Driver |
| Mounting Type | Surface Mount |
| Function | Step-Up/Step-Down |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Output Configuration | Positive, Isolation Capable |
| Frequency - Switching | Up to 1MHz |
| Topology | Flyback |
| Voltage - Supply (Vcc/Vdd) | 7.6V ~ 20V |
| Supplier Device Package | 16-SO |
| Synchronous Rectifier | Yes |
| Control Features | Current Limit, Frequency Control, Soft Start |
| Serial Interfaces | - |
| Output Phases | 1 |
| Duty Cycle (Max) | 93% |
| Clock Sync | No |
| Number of Outputs | 1 |
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