ISL911xx Family of Buck-Boost/Boost Regulators

The ISL9110x buck-boost regulator family is capable of working with the ultra-small inductors and capacitors to fit within less than 14mm2 board footprint, making them the ideal 2A switching converter solution for space-constrained mobile devices. The advanced wafer-level CSP package requires only a single inductor and very few external components, which minimizes overall space requirements. The ISL911xx regulators’ 2.5MHz switching frequency further reduces the power supply solution size.

Buck-Boost Regulators

ISL91106, ISL91107 and ISL91108 are highly-integrated buck-boost switching regulators that accept input voltages either above or below the regulated output voltage. Unlike other buck-boost regulators, these regulators automatically transition between operating modes without significant output disturbance.

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.

Part Description Topology Output Current
ISL91106 High Efficiency Buck-Boost Regulator
with 3.6A Switches and Bypass Mode
Buck-Boost up to 2A
(PVIN = 2.8V, VOUT= 3.3V)
ISL91107 High Efficiency Buck-Boost Regulator
with 3.6A Switches
Buck-Boost up to 2A
(PVIN = 2.8V, VOUT= 3.3V)
ISL91108 High Efficiency Buck-Boost Regulator
with 4.2A Switches
Buck-Boost up to 2.7A
(PVIN = 3V, VOUT = 3.3V)
ISL91110 High Efficiency Buck-Boost Regulator
with 4.5A Switches
Buck-Boost up to 2A
(PVIN = 2.5V, VOUT= 3.3V)
Boost Regulators

The ISL91132, ISL91133 and ISL91134 are integrated boost switching regulators for battery powered applications. These devices provide a power supply solution for products using a one cell Li-ion or Li-polymer battery.

ISL91117 is a highly-integrated boost switching regulator for battery powered applications. The device provides a power supply solution for products using dual-cell or three-cell alkaline, NiCd or NiMH, or one-cell Li-ion or Li-polymer battery.

Part Description Topology Output Voltage
ISL91117 High Efficiency Synchronous Boost Converter
with 4.2A Switches and Output Disconnect
Boost 1 fixed output voltage of 5V
ISL91132 High Efficiency 1.8A Boost Regulator
with Input-to-Output Bypass
Boost 6 fixed output voltages
ranging from 3.15V to 5V
ISL91133 High Efficiency 2.3A Boost Regulator
with Input-to-Output Bypass
Boost 6 fixed output voltages
ranging from 3.15V to 5V
ISL91134 High Efficiency 1.8A Boost Regulator
with Input-to-Output Bypass
Boost 1 fixed output voltage of 5V