ISL78322 Datasheet | Renesas

Dual 2A/1.7A, 2.25MHz High-Efficiency, Synchronous Buck Regulator FN7908 Rev 3.00 November 30, 2016 The ISL78322 is a high-efficiency, dual synchronous step-down DC/DC regulator that can deliver up to 2A/1.7A continuous output current per channel. The channels are 180° out-ofphase for input RMS current and EMI reduction. The supply voltage range of 2.8V to 5.5V allows for the use of a single Li+ cell, three Ni MH cells or a regulated 5V input. The current mode control architecture enables very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL78322 operates at 2.25MHz switching frequency, which allows for the use of small, low cost inductors and capacitors. Each channel is optimized for generating an output voltage as low as 0.6V. The ISL78322 has a forced PWM mode that reduces noise and RF interference. The ISL78322 offers a 1ms Power-Good (PG) signal to monitor both outputs at power-up. When shut down,...