L5991A
IC REG CTRLR FLYBACK 16DIPManufacturer: STMicroelectronics
Categories: DC DC Switching Controllers
Quality Control: Learn More
STMicroelectronics L5991A is a high-performance, isolated flyback controller designed for step-up and step-down DC-DC conversion in demanding applications. This device features a robust current-mode control architecture, enabling precise regulation and efficient operation across a wide input voltage range of 7.6V to 20V. The L5991A supports switching frequencies up to 1MHz, facilitating compact power supply designs. Key control features include adjustable current limiting, frequency control, and soft-start for smooth power-up sequences. Its output is configured as a positive, isolation-capable transistor driver, making it suitable for power supplies requiring galvanic isolation. The L5991A is packaged in a 16-DIP through-hole mount, commonly found in industrial automation, consumer electronics, and lighting control systems. It operates reliably across an extended temperature range of -40°C to 150°C.
Additional Information
Series: -RoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: TubeDatasheet:Download Free CAD Model:
Technical Details:
| Packaging | Tube |
| Package / Case | 16-DIP (0.300"", 7.62mm) |
| Output Type | Transistor Driver |
| Mounting Type | Through Hole |
| 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-DIP |
| 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 |
Request a Quote
Clients Also Buy
MX25R8035FZUIL0
IC FLASH 8MBIT SPI/QUAD 8USON
MX25V8035FZUI
IC FLASH 8MBIT SPI 104MHZ 8USON
MX25R3235FM1IH0
IC FLASH 32MBIT SPI/QUAD 8SOP
