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ISL91108 - High Efficiency Buck-Boost Regulator

Description

Buck-boost output.

Connect 2x22µF capacitor to PGND.

LX2 Inductor connection, output side.

Features

  • Accepts input voltages above or below regulated output voltage.
  • Automatic and seamless transitions between buck and boost modes.
  • Input voltage range: 1.8V to 5.5V.
  • Output current: up to 1.6A DC (PVIN = 2.8V, VOUT = 3.3V).
  • Burst current: up to 2.7A (PVIN = 3V, VOUT = 3.3V, tON.

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Datasheet Details

Part number ISL91108
Manufacturer Renesas
File Size 434.29 KB
Description High Efficiency Buck-Boost Regulator
Datasheet download datasheet ISL91108 Datasheet

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Full PDF Text Transcription

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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.
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