MAX8543/MAX8544 is a constant-frequency PWM buck controller produced by Texas Instruments. It has a working voltage range of 3V to 13.2V and an output voltage range of 0.8V to 0.9 x VIN. The maximum current is 25A.
The MAX8543 and MAX8544 are current‑mode, constant‑frequency PWM buck controllers that operate from a 3 V to 13.2 V input supply and provide adjustable output voltages of 0.8 V to 0.9×VIN at loads up to 25 A. They feature pre‑bias startup, lossless current sensing, adjustable switching frequency, synchronization and over‑voltage protection.
The document includes absolute maximum ratings, detailed electrical characteristics, typical operating curves, suggested external components, pin configurations and package dimensions for both devices.