The MAX5033 is a high-efficiency, high-voltage step-down DC-DC converter from MAXIM. It is suitable for automotive, consumer electronics, and industrial distributed power applications. The product features a wide input voltage range (7.5V to 76V), fixed (3.3V, 5V, 12V) and adjustable (1.25V to 13.2V) output voltage, and low static current (270µA).
The MAX5033 is an easy-to-use, high-voltage, step-down DC-DC converter that operates from an input voltage up to 76V and consumes only 270µA quiescent current at no load. This pulse-width modulated (PWM) converter operates at a fixed 125kHz switching frequency at heavy loads and automatically switches to pulse-skipping mode for high efficiency at light loads.
The device includes internal frequency compensation, undervoltage lockout, cycle-by-cycle current limit, hiccup-mode output short-circuit protection, and thermal shutdown. It is available in fixed (3.3V, 5V, 12V) and adjustable voltage versions within an 8-pin SO or PDIP package.
| Output Current | 500mA |
|---|---|
| Input Voltage Range | 7.5V to 76V |
| Switching Frequency | 125kHz |
| Quiescent Current (No Load) | 270µA |
| Efficiency | Up to 94% |
| Package Types | 8-Pin SO and PDIP |
The device operates from an input voltage up to 76V.
Yes, it includes hiccup-mode output short-circuit protection and thermal shutdown.
The MAX5033A/B/C versions have fixed output voltages of 3.3V, 5V, and 12V.