L4978 ST DC-DC Converters
The L4978 is a step-down monolithic power switching regulator from STMicroelectronics, featuring 2A output current capability and wide input voltage range for high-efficiency DC-DC conversion. For selection, verify input voltage from 8V to 55V, adjustable output voltage, switching frequency up to 200kHz, high efficiency operation, and operating temperature suitable for industrial applications. Features include internal power switch, soft-start to limit inrush current, current limiting and thermal shutdown for protection, and inhibit pin for power sequencing. Ideal for 24V/48V distributed power systems, industrial automation, battery-powered equipment, consumer electronics, and any step-down DC-DC conversion requiring up to 2A output with high efficiency and wide input voltage range. In stock at HL Electronics – request a quote for fast delivery.
Pricing (USD)
| Quantity | Unit Price |
|---|---|
| 1+ | $ 1.61 |
| 100+ | $ 1.39 |
| 1000+ | $ 1.33 |
| 2000+ | $ 1.28 |
| 30000+ | $ 1.27 |
| 40000+ | $ 1.26 |
Technical Specifications
- Part No.L4978
- Model L4978
- Category Integrated Circuits (ICs) > Power Management (PMIC) > DC-DC Converters
- Manufacturer STMicroelectronics
- Packaging Tube
- Part Status Active
- Function Step-Down
- Topology Buck
- Output Type Adjustable
- Number of Outputs 1
- Voltage - Input 8V ~ 55V
- Voltage - Output 3.3V ~ 50V
- Current - Output 1 A
- Frequency - Switching 400 kHz
- Synchronous Rectifier No
- Operating Temperature -40°C ~ 150°C (TJ)
- Mounting Type Through Hole
- Supplier Device Package DIP-8
- Base Product Number L4978
- RoHS ROHS3 Compliant
- Standard Package 50
