Key facts
- Brand
- STMicroelectronics
- Model
- L5970D
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-10
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ST L5970D Up to 1A step down switching regulator handbook
The L5970D is a step-down switching regulator capable of delivering up to 1A output current and operating input voltage range from 4.4V to 36V. It uses an internal P-Channel D-MOS transistor as the switching element to minimize the size of external components. With a minimum input voltage of 4.4V, it is particularly suitable for 5V bus in computer-related applications. The device has a fixed switching frequency of 250KHz and operates at 100% duty cycle for low dropout operation. It also features various protections and synchronization.
Read onlineSTMicroelectronics L5970D specifications
| Maximum Output Current | 1 A |
|---|---|
| Output Voltage Range | 1.2 V – 35 V |
| Input Voltage Range | 4.4 V – 36 V |
| Switching Frequency | 250 kHz (fixed) |
| MOSFET Rdson | 250 mΩ (typical) |
| Thermal Resistance (junction‑to‑ambient) | max 120 °C/W |
Source: STMicroelectronics L5970D Step‑Down Switching Regulator Datasheet
All STMicroelectronics L5970D documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current of the L5970D?
The device can deliver up to 1 A of output current.
From: STMicroelectronics L5970D Step‑Down Switching Regulator Datasheet
What is the fixed switching frequency of the L5970D?
The regulator operates at a fixed switching frequency of 250 kHz.
From: STMicroelectronics L5970D Step‑Down Switching Regulator Datasheet