Key facts
- Brand
- STMicroelectronics
- Model
- L4975A
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics L4975A 5A Switching Regulator Datasheet
The L4975A is a stepdown monolithic power switching regulator delivering 5A at an output voltage variable from 5.1V to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. It features reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current, and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components.
Read onlineSTMicroelectronics L4975A specifications
| Output Current | 5A |
|---|---|
| Output Voltage Range | 5.1V to 40V |
| Duty Cycle Range | 0 to 90% |
| Reference Voltage | 5.1V + 2% |
| Switching Frequency | Up to 500kHz |
| Maximum Input Voltage | 55V |
| Total Power Dissipation | 30W |
| Package | 15-lead multiwatt plastic power package |
Source: STMicroelectronics L4975A 5A Switching Regulator Datasheet
All STMicroelectronics L4975A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the output voltage range of the L4975A?
The output voltage is adjustable from 5.1V to 40V.
From: STMicroelectronics L4975A 5A Switching Regulator Datasheet
What is the maximum output current?
The device delivers 5A of output current.
From: STMicroelectronics L4975A 5A Switching Regulator Datasheet
What is the reference voltage of the L4975A?
The device uses a precise on‑chip reference of 5.1 V ±2 %.
How does the L4975A protect against over‑current?
It includes a soft‑start function and a current‑limit circuit that shuts off the power DMOS when the load current exceeds a preset threshold.