Datasheet Intersil ISL91110IR2AZ-T

DATASHEET
ISL91110 FN8434
Rev 4.00
February 5, 2016 High Efficiency Buck-Boost Regulator with 4.5A Switches
The ISL91110 is a high-current buck-boost switching regulator
for systems using new battery chemistries. It uses Intersil’s
proprietary buck-boost algorithm to maintain voltage
regulation while providing excellent efficiency and very low
output voltage ripple when the input voltage is close to the
output voltage. Features The ISL91110 is capable of delivering at least 2A continuous
output current (VOUT = 3.3V) over a battery voltage range of
2.5V to 4.35V. This maximizes the energy utilization of
advanced single-cell Li-ion battery chemistries that have
significant capacity left at voltages below the system voltage.
Its fully synchronous low ON-resistance 4-switch architecture
and a low quiescent current of only 35ВµA optimize efficiency
under all load conditions. Input voltage range: 1.8V to 5.5V The ISL91110 supports standalone applications with a fixed
3.3V or 3.5V output voltage or adjustable output voltage with
an external resistor divider. Output voltages as low as 1.0V or
as high as 5.2V are supported.
The ISL91110 is available in a 25-bump, 0.4mm pitch WLCSP
(2.33mmx2.07mm) and a 2.5MHz switching frequency, which
further reduces the size of external components. Accepts input voltages above or below regulated output …

DATASHEET
ISL91110IR FN8709
Rev 0.00
April 17, 2015 High Efficiency Buck-Boost Regulator with 5.4A Switches
The ISL91110IR is a high-current buck-boost switching regulator
for systems using new battery chemistries. It uses Intersil’s
proprietary buck-boost algorithm to maintain voltage regulation
while providing excellent efficiency and very low output voltage
ripple when the input voltage is close to the output voltage.
The ISL91110IR is capable of delivering at least 2A continuous
output current (VOUT = 3.3V) over a battery voltage range of 2.5V
to 4.35V. This maximizes the energy utilization of advanced
single-cell Li-ion battery chemistries that have significant capacity
left at voltages below the system voltage. Its fully synchronous
low ON-resistance 4-switch architecture and a low quiescent
current of only 35ВµA optimize efficiency under all load conditions.
The ISL91110IR supports standalone applications with a fixed
3.3V or 3.5V output voltage or adjustable output voltage with an
external resistor divider. Output voltages as low as 1V or as high
as 5.2V are supported.
The ISL91110IR requires only a single inductor and very few
external components. Power supply solution size is minimized by
its 2.5MHz switching frequency, allowing small size external …