Key facts
- Brand
- STMicroelectronics
- Model
- L5970D
- Industry
- Industrial
- Documents
- 4
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics L5970D Up to 1A Step Down Switching Regulator Datasheet
The L5970D is a step-down monolithic power switching regulator capable of delivering up to 1A at output voltages ranging from 1.2V to 35V. It utilizes an internal P-Channel D-MOS transistor with a typical Rdson of 250mΩ to minimize the size of external components. The device operates with an internally fixed switching frequency of 250kHz and supports a minimum input voltage of 4.4V, making it suitable for 5V bus applications.
Read onlineSTMicroelectronics L5970D specifications
| Maximum output current | 1A |
|---|---|
| Operating input voltage range | 4.4V to 36V |
| Output voltage range | 1.2V to 35V |
| Switching frequency | 250KHz |
| Reference voltage | 3.3V |
| Maximum thermal resistance junction-ambient | 420 °C/W |
| Operating junction temperature range | -40 to 150 °C |
Source: STMicroelectronics L5970D Up to 1A Step Down Switching Regulator Datasheet
All STMicroelectronics L5970D documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the maximum output current of the L5970D?
The device is capable of delivering up to 1A at the output.
From: STMicroelectronics L5970D Up to 1A Step Down Switching Regulator Datasheet
What is the minimum input voltage required for operation?
The regulator requires a minimum input voltage of 4.4V.
From: STMicroelectronics L5970D Up to 1A Step Down Switching Regulator Datasheet
What is the maximum output current the L5973D can deliver?
The L5973D is able to deliver 2A at output voltages from 1.25V to 35V.
From: STMicroelectronics AN2259 High Intensity LED Driver Application Note
What is the switching frequency of the internal oscillator?
An internal oscillator fixes the switching frequency at 250kHz.
From: STMicroelectronics AN2259 High Intensity LED Driver Application Note
What is the switching frequency of the L5970D?
The internal oscillator fixes the switching frequency at 250 kHz.
From: STMicroelectronics AN1330 Designing with the L5970D 1A DC-DC Converter Application Note
Can the L5970D be synchronized to an external signal?
Yes, a synchronization pin is available for cases where a higher frequency up to 500 kHz is required.
From: STMicroelectronics AN1330 Designing with the L5970D 1A DC-DC Converter Application Note