The L5972D is a 2A switch step down switching regulator from ST company, with an input voltage range of 4.4V to 36V, an adjustable output voltage range of 1.235V to 35V, a working frequency of 250kHz, internal current limiting, short circuit protection, undervoltage protection and other functions. It is suitable for consumer, networking, computer and industrial products.
The L5972D is a step-down monolithic power switching regulator featuring a minimum switch current limit of 2A. It utilizes an internal P-Channel D-MOS transistor as the switching element to minimize the size of external components. The device includes an internal oscillator that fixes the switching frequency at 250kHz and supports a minimum input voltage of 4.4V, making it suitable for 5V bus applications.
| Operating input voltage range | 4.4V to 36V |
|---|---|
| Output voltage range | 1.235V to 35V |
| Switching frequency | 250kHz |
| Maximum output current | 2A |
| Maximum thermal resistance junction-ambient | 65 °C/W |
The device operates with an input voltage as low as 4.4V.
The internal switch is rated for a maximum current of 2A.
The regulator uses an internal oscillator that fixes the frequency at 250kHz.