Key facts
- Brand
- STMicroelectronics
- Model
- L5981
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-10
Start here
ST L5981 handbook
The L5981 is a 1A step-down switching regulator with 1.5A (min.) current limited embedded power MOSFET, so it is able to deliver in excess of 1A DC current to the load depending on the application condition. The input voltage can range from 2.9V to 18V, while the output voltage can be set starting from 0.6V to VIN. Having a minimum input voltage of 2.9V, the device is suitable also for 3.3V bus. Requiring a minimum set of external components, the device includes an internal 250kHz switching frequency oscillator that can be externally adjusted up to 1MHz. The VFQFPN8 package with exposed pad allows reducing the RthJA down to approximately 60°C/W.
Read onlineSTMicroelectronics L5981 specifications
| Output current | 1 A |
|---|---|
| Input voltage range | 2.9 V to 18 V |
| Output voltage range | 0.6 V to 16 V |
| Switching frequency | 250 kHz to 1 MHz |
| Default output voltage | 3.3 V |
Source: STMicroelectronics EVAL5981 1 A Step-Down Switching Regulator Demonstration Board Data Brief
All STMicroelectronics L5981 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the default output voltage of the EVAL5981 board?
The board features an external resistor divider designed for an output voltage of 3.3 V.
From: STMicroelectronics EVAL5981 1 A Step-Down Switching Regulator Demonstration Board Data Brief
Can the output voltage be adjusted on the EVAL5981?
Yes, the output voltage can be set to a level from 0.6 V up to the rated voltage of the output capacitor (16 V).
From: STMicroelectronics EVAL5981 1 A Step-Down Switching Regulator Demonstration Board Data Brief