The LM2743 is a high-speed, N-Channel synchronous buck regulator controller with a 2%, 0.6V feedback reference voltage intended to make down conversion from 3.3V to as low as 0.6V easy.
The LM2743 is a high‑speed N‑Channel synchronous buck regulator controller with a 2 % 0.6 V feedback reference designed for down‑conversion from 3.3 V to as low as 0.6 V. It uses a voltage‑mode PWM architecture whose switching frequency is adjustable from 50 kHz to 2 MHz, allowing designers to balance component size, cost, noise, and efficiency.
Key features include a wide MOSFET input voltage range (1 V‑16 V), IC input voltage range (3 V‑6 V), adjustable output down to 0.6 V, power‑good flag, under‑/over‑voltage flags, soft‑start, and a TSSOP‑14 package. The document provides pin descriptions, absolute maximum ratings, electrical characteristics, typical performance curves, and PCB layout guidelines.
| MOSFET input voltage range | 1 V to 16 V |
|---|---|
| IC input voltage range | 3 V to 6 V |
| Minimum output voltage | 0.6 V |
| Switching frequency range | 50 kHz to 2 MHz |
| Package type | TSSOP‑14 |
The MOSFET input voltage can be between 1 V and 16 V.
The device supports a switching frequency from 50 kHz up to 2 MHz.
The output voltage is adjustable down to 0.6 V.
Pin 6 (PWGD) is the power‑good pin; it is an open‑drain output that goes low on under‑voltage, over‑voltage, or UVLO conditions.