The L5970D is a step-down monolithic power switching regulator capable of delivering up to 1 A at output voltages from 1.235 V to 35 V. The operating input voltage ranges from 4.4 V to 36 V. It has been designed using BCDV technology and the power switching element is implemented through a P-channel DMOS transistor. It does not require a bootstrap capacitor, and the duty cycle can range up to 100%. An internal oscillator fixes the switching frequency at 250 kHz. This minimizes the LC output filter. A synchronization pin is available for cases where a higher frequency (up to 500 kHz) is required. Pulse-by-pulse and frequency foldback overcurrent protection offer effective short circuit protection. Other features are voltage feed-forward, protection against feedback disconnection, inhibit and thermal shutdown.
The L5970D is a step-down monolithic power switching regulator capable of delivering up to 1 A at output voltages from 1.235 V to 35 V. It operates with input voltages ranging from 4.4 V to 36 V and uses BCDV technology with a P-channel DMOS transistor. The device features an internal oscillator fixed at 250 kHz, which can be synchronized to an external signal up to 500 kHz. It includes pulse-by-pulse and frequency foldback overcurrent protection, voltage feed-forward, and thermal shutdown.
| Output current | up to 1 A |
|---|---|
| Output voltage range | 1.235 V to 35 V |
| Input voltage range | 4.4 V to 36 V |
| Switching frequency | 250 kHz |
| Maximum synchronization frequency | 500 kHz |
| Reference voltage | 3.3 V |
| Technology | BCDV |
The internal oscillator fixes the switching frequency at 250 kHz.
Yes, a synchronization pin is available for cases where a higher frequency up to 500 kHz is required.
No, the device does not require a bootstrap capacitor.
It offers pulse-by-pulse and frequency foldback overcurrent protection.