Key facts
- Brand
- STMicroelectronics
- Model
- L5973D
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-10
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ST L5973D handbook
The L5973D is a step-down monolithic power switching regulator with a minimum switch current limit of 2.5 A, so it is able to deliver more than 2 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to an SO8 package with exposed frame, that allows to reduce the Rth(j-amb) down to approximately 40 °C/W. The device uses an internal P-channel D-MOS transistor (with a typical Rdson of 250 mΩ) as switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 250 kHz. Having a minimum input voltage of 4 V only, it is particularly suitable for applications with low input voltage and high output current.
Read onlineSTMicroelectronics L5973D specifications
| Operating input voltage range | 4.4 V to 36 V |
|---|---|
| Adjustable output voltage | 1.235 V to 35 V |
| Switching frequency | 250 kHz |
All STMicroelectronics L5973D documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the minimum input voltage for the L5973D?
The regulator can operate with an input voltage as low as 4.4 V.
What is the maximum input voltage rating?
The absolute maximum input voltage is 40 V.
From: ST L5973D Datasheet
What is the switching frequency of the L5973D?
The device operates at a fixed switching frequency of 250 kHz.
From: ST L5973D Datasheet