DATASHEET
ISL91108
High Efficiency Buck-Boost Regulator with 4.2A Switches
FN8448 Rev 1.00 November 12, 2014
The ISL9...
DATASHEET
ISL91108
High Efficiency Buck-Boost
Regulator with 4.2A Switches
FN8448 Rev 1.00 November 12, 2014
The ISL91108 is a highly-integrated buck-boost switching
regulator that accepts input voltages either above or below the regulated output voltage. Unlike other buck-boost
regulators, this
regulator automatically transitions between operating modes without significant output disturbance.
This device is capable of delivering up to 2.7A of burst 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. Forced PWM and/or synchronization to an external clock may also be selected for noise sensitive applications.
The ISL91108 is designed for standalone applications and supports a 3.3V fixed output voltage or variable output voltages with an external resistor divider. Output voltages as low as 1V or as high as 5.2V are support...