The ISL6269B is a Single-Phase Synchronous-Buck PWM controller featuring Intersil's Robust Ripple Regulator (R3) technology that delivers truly superior dynamic response to input voltage and output load transients.
The ISL6269B is a single‑phase synchronous‑buck PWM controller that uses Intersil's Robust‑Ripple‑Regulator (R°) technology. It integrates MOSFET drivers, a bootstrap diode and a digital soft‑start to reduce component count and improve transient response.
The device supports a wide input voltage range (5 V‑25 V), output voltage range (0.6 V‑3.3 V) and up to 25 A load current. It can operate in continuous‑conduction mode or diode‑emulation mode for better light‑load efficiency, and includes multiple protection features such as undervoltage, overvoltage, over‑current and over‑temperature protection.
| Input voltage range | 5.0 V to 25.0 V |
|---|---|
| Output voltage range | 0.6 V to 3.3 V |
| Maximum output current | 25 A |
| Programmable PWM frequency | 200 kHz to 6 MHz |
| Regulation accuracy | ±1 % (−10 °C to +100 °C) |
| Digital soft‑start time | 1.5 ms |
| Operating temperature range | -10 °C to +100 °C |
| Junction temperature range | -55 °C to +150 °C |
The controller operates from 5 V up to 25 V input.
It uses Intersil's R° technology with integrated MOSFET drivers and a bootstrap diode, which reduces component count and improves dynamic response.
Yes, by pulling the FCCM pin low the controller enters diode‑emulation mode for increased light‑load efficiency.