Intersil – ISL91108, ISL91110 and ISL91117: High Efficiency Buck-Boost/Boost Switching Regulators

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ISL91108, ISL91110 AND ISL91117: High Efficiency Buck-Boost/Boost Switching Regulators

The ISL91110 is a high current buck-boost switching regulator that is capable of delivering at least 2A continuous output current (VOUT = 3.3V) over a battery voltage range of 2.5V to 4.35V. The ISL91108 is capable of delivering up to 2.7A output current (PVIN = 3V, VOUT = 3.3V), and provides excellent efficiency due to its fully synchronous 4-switch architecture. No load quiescent current of only 27.5µA also optimizes efficiency under light load conditions. The ISL91117 is a highly integrated boost switching regulator that is capable of delivering an output current of 1.5A with PVIN = 3.3V and VOUT = 5V.

FEATURES
• 1.8V to 5.5V input voltage range
• Up to 2A DC output current
• Up to 3A DC burst current
• 2.6MHz switching frequency
• True input output disconnect when disabled (ISL91117)
• Ultra low RDS(ON) FETs
• 35µA quiescent current
• Up to 96% efficiency
• 2.34 x 1.72mm WLCSP package
• 1k MSRP: $0.74 US to $0.83 US

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