STMicroelectronics L5991
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | Dhs. 7.01 | Dhs. 7.01 |
| 15+ | Dhs. 6.79 | Dhs. 101.85 |
| 25+ | Dhs. 6.64 | Dhs. 166.00 |
| 50+ | Dhs. 6.27 | Dhs. 313.50 |
| 100+ | Dhs. 5.54 | Dhs. 554.00 |
| N+ | Dhs. 1.11 | Price Inquiry |
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STMicroelectronics L5991 PWM Controller IC
The L5991 is a high-performance PWM controller IC from STMicroelectronics, designed for boost and flyback topology applications. This versatile controller supports switching frequencies up to 1MHz and operates with a supply voltage range of 10V to 20V, making it ideal for a wide range of power conversion applications in aerospace, automotive, industrial, telecommunications, medical, and consumer electronics.
Key Features & Benefits
- High Switching Frequency: Up to 1MHz for compact transformer design and reduced component size
- Wide Supply Voltage Range: 10V to 20V operation with 15V start-up voltage
- High Duty Cycle: 93% maximum duty cycle for efficient power conversion
- Multiple Topologies: Supports both boost and flyback configurations
- Comprehensive Protection: Current limiting and over-voltage protection for reliable operation
- Advanced Control Features: Frequency control, soft start, and synchronization capability
- Wide Operating Temperature: -40°C to 150°C (TJ) for demanding environments
- Standard Package: Through-hole 16-DIP (0.300", 7.62mm) for easy prototyping and production
- RoHS Compliant: Meets environmental standards for global markets
Applications
The L5991 is well-suited for isolated and non-isolated DC-DC converters, battery chargers, LED drivers, and auxiliary power supplies across multiple industries including aerospace, automotive, industrial automation, telecommunications infrastructure, medical equipment, and consumer electronics.
Why Choose the L5991?
The L5991 offers design engineers a proven, reliable PWM controller solution with comprehensive protection features and flexible topology support. Its high switching frequency capability enables smaller, more efficient power supply designs, while the wide operating temperature range ensures reliable performance in harsh environments. Backed by STMicroelectronics' long lifecycle commitment and full traceability, the L5991 is an excellent choice for both new designs and long-term production requirements.
| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | Tube | |
| Output Isolation | Isolated |
| Internal Switch(s) | No |
| Voltage - Breakdown | - |
| Topology | Boost, Flyback |
| Voltage - Start Up | 15 V |
| Voltage - Supply (Vcc/Vdd) | 10V ~ 20V |
| Duty Cycle | 93% |
| Frequency - Switching | Up to 1MHz |
| Power (Watts) | - |
| Fault Protection | Current Limiting, Over Voltage |
| Control Features | Frequency Control, Soft Start, Sync |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-DIP |
| ROHS |  |
L5991.pdf