MAX8576-MAX8579 is a low-cost, 3V to 28V input, hysteresis synchronous step-down controller with the following features: 1.2% accuracy, adjustable output voltage, 200kHz to 500kHz switching frequency, adjustable, temperature-compensated 'hiccup' current limiting, non-destructive peak current detection, monotonic start-up from prebiased output (MAX8576/MAX8578), start-up overvoltage protection (MAX8577/MAX8579), enable/disable, and adjustable soft-start.
The MAX8576‑MAX8579 series are synchronous PWM buck controllers that operate from a 3 V to 28 V input and provide an adjustable output voltage from 0.6 V to 0.9 × VIN. The devices feature hysteretic voltage mode control, fast transient response, and a range of protection functions such as over‑voltage, over‑current and soft‑start.
The document includes absolute maximum ratings, detailed electrical characteristics, pin descriptions, typical application schematics, efficiency graphs, layout recommendations and a list of recommended external components for optimal performance. This manual is written in Chinese.
| Input voltage range | 3 V to 28 V |
|---|---|
| Adjustable output voltage range | 0.6 V to 0.9 × VIN |
| Maximum load current | 15 A |
| Switching frequency range | 200 kHz to 500 kHz |
| Operating temperature range | -40 °C to +85 °C |
The controllers operate from 3 V up to 28 V input.
They can supply up to 15 A of load current.
The switching frequency is adjustable between 200 kHz and 500 kHz.