Enjoy 91% Efficiency with 40% smaller solution size PMIC by Intersil

Key Features and Specifications of ISL91211

• Available in two factory configurable options:
  o   ISL91211A: four-phase, three output rails configured as 2+1+1 phase
  o   ISL91211B: four-phase, four output rails configured as 1+1+1+1 phase
• 5A maximum current per phase up to 20A with four phases
• R5 modulator architecture balances current loads with smooth phase adding and dropping for power efficiency optimization
• Automatic diode emulation mode for 91% efficiency at 1.1V output voltage
• Less than 0.1uA quiescent current (Iq) when EN=0V, and 17uA when EN=3.7V
• Independent dynamic voltage scaling for each output
• Input voltage range of 2.5V to 5.5V
• ±0.7% system accuracy; Output voltage remote sensing for accurate voltage regulation at the point-of-load
• I²C and SPI programmable output from 0.3V to 2V
• Soft-start and full protection against undervoltage, overvoltage, overcurrent, and overtemperature

The ISL91211A triple-output PMIC and ISL91211B quad-output PMIC can be combined with Intersil ISL91127 high efficiency buck-boost regulators to provide application processor and subsystem peripheral rails for battery-operated products.

Pricing and Availability

The ISL91211 PMIC is available in two options: ISL91211A triple-output PMIC and ISL91211B quad-output PMIC supplied in 2.511mm x 3.610mm, 54-ball WLCSP packages. Both PMIC options are available now and priced at $3.90 USD in 1k quantities. For more information on the ISL91211, please visit: www.intersil.com/products/isl91211.