High-Performance Notebook PWM Controller with Audio-Frequency Clamp

The ISL6269B IC 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. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area.

FEATUREs
• High performance R³ technology
• Fast transient response
• ±1% regulation accuracy: -10°C to +100°C and -40° to +100°C
• Wide input voltage range: +5.0V to +25.0V
• Output voltage range: +0.6V to +3.3V
• Wide output load range: 0A to 25A
• Selectable diode emulation mode for increased light load efficiency
• Programmable PWM frequency: 200kHz to 600kHz
• Pre-biased output start-up capability
• Integrated MOSFET drivers and bootstrap diode
• Internal digital soft-start
• Power good monitor
• PWM minimum frequency above audible spectrum
• Fault protection
- Undervoltage protection
- Soft crowbar overvoltage protection
- Low-side MOSFET rDS(ON)overcurrent protection
- Over-temperature protection
- Fault identification by PGOOD pull down resistance
• Pb-free plus anneal available (RoHS compliant)

Applications
• PCI express graphical processing unit
• Auxiliary power rail
• VRM
• Network adapter