DATASHEET
ISL9110, ISL9112 FN7649
Rev 2.00
July 13, 2012 1.2A High Efficiency Buck-Boost Regulators Features The ISL9110 and ISL9112 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. Accepts Input Voltages Above or Below Regulated Output
Voltage Automatic and Seamless Transitions Between Buck and
Boost Modes Both parts are capable of delivering up to 1.2A output current,
and provide excellent efficiency due to their fully synchronous
4-switch architecture. No-load quiescent current of only 35ВµA
also optimizes efficiency under light-load conditions. Forced
PWM and/or synchronization to an external clock may also be
selected for noise sensitive applications. Input Voltage Range: 1.8V to 5.5V Output Current: Up to 1.2A High Efficiency: Up to 95% 35ВµA Quiescent Current Maximizes Light-load Efficiency 2.5MHz Switching Frequency Minimizes External
Component Size The ISL9110 is designed for standalone applications and
supports 3.3V and 5V fixed output voltages or variable output
voltages with an external resistor divider. Output voltages as
low as 1V, or as high as 5.2V are supported using an external
resistor divider. Selectable Forced-PWM Mode and External Synchronization I2C Interface (ISL9112) Fully Protected for Overcurrent, Over-temperature and
Undervoltage The ISL9112 supports a broader set of programmable features
that may be accessed via an I2C bus interface. With a
programmable output voltage range of 1.9V to 5V, the …
