The LM20333 is a 36V, 3A PowerWise® Synchronous Buck Regulator with Frequency Synchronization
The LM20333 is a full‑featured synchronous buck regulator capable of delivering up to 3 A of load current (5.2 A peak). It operates over a wide input range of 4.5 V to 36 V and includes internal over‑voltage, over‑current, and UVLO protection for reliable operation. The device offers a precision enable pin, programmable soft‑start, and a power‑good output for easy sequencing.
The regulator is offered in an exposed‑pad 20‑lead eTSSOP package and can synchronize its switching frequency to an external clock from 250 kHz to 1.5 MHz. Typical efficiency reaches 94 % with synchronous rectification, making it suitable for high‑performance DSPs, FPGAs, ASICs, microprocessors, and automotive communication infrastructure.
| Input voltage range | 4.5 V to 36 V |
|---|---|
| Continuous output current | 3 A |
| Peak output current | 5.2 A |
| Switching frequency (sync range) | 250 kHz to 1.5 MHz |
| Peak efficiency | 94 % |
The LM20333 operates from 4.5 V up to 36 V.
It can deliver a continuous output current of 3 A (5.2 A peak).
The SYNC pin allows synchronization from 250 kHz to 1.5 MHz.