Power & Power Management

Overview

Description

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.

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 35µA 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 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.

The ISL9110 and ISL9112 require only a single inductor and very few external components. Power supply solution size is minimized by a tiny 3mmx3mm package and a 2.5MHz switching frequency, which further reduces the size of external components.

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 1.2A
  • High Efficiency: Up to 95%
  • 35µA Quiescent Current Maximizes Light-load Efficiency
  • 2.5MHz Switching Frequency Minimizes External Component Size
  • Selectable Forced-PWM Mode and External Synchronization
  • I2C Interface (ISL9112)
  • Fully Protected for Overcurrent, Over-temperature and Undervoltage
  • Small 3mmx3mm TDFN Package

Applications

  • Regulated 33V from a Single Li-Ion Battery
  • Smart Phones and Tablet Computers
  • Handheld Devices
  • Point-of-Load Regulators

Documentation

Title Type Date
PDF592 KB
Application Note
PDF509 KB
Application Note
PDF397 KB
Application Note
PDF1.10 MB日本語
Datasheet
PDF202 KB
Product Change Notice
PDF326 KB
Product Change Notice
PDF151 KB
Product Change Notice
PDF223 KB
Product Change Notice
PDF106 KB
Product Change Notice
PDF183 KB
Product Change Notice
PDF173 KB
Product Change Notice
PDF169 KB
Product Change Notice
PDF846 KB
White Paper

Design & Development

Software & Tools

Software & Tool Pages

Title Type Company
iSim:PE Offline Simulation TooliSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.Downloads: Simulator Renesas

Models

Models

Title Type Date
SXSCH189 KB
Model - Other

Support