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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TDFN Tube 100
Availability
Active TDFN Reel 6000
Availability
Active TDFN Tube 100
Availability
Active TDFN Reel 6000
Availability
Active TDFN Reel 250
Availability
Active TDFN Tube 100
Availability
Active TDFN Reel 6000
Availability
Active TDFN Reel 250
Availability
Active TDFN Tube 100
Availability
Active TDFN Reel 6000
Availability
Active TDFN Reel 250
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL9110, ISL9112 Datasheet 日本語 Datasheet PDF 1.34 MB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN9208: High Frequency Power Converters Application Note PDF 592 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
PCNs & PDNs
PCN14009 - Alternate Manufacturing Facilities for Assembly of the Listed Intersil TDFN/QFN/TQFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and Carsem (CAS) - Ipoh, Malaysia Product Change Notice PDF 151 KB
PCN13060 - Test Site Change for the Listed Intersil Products Product Change Notice PDF 223 KB
PCN13025 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and STATS ChipPAC (SCM) - Kuala Lumpur, Mal Product Change Notice PDF 106 KB
PCN13024 - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering - Chung-Li, Taiwan (ASECL Product Change Notice PDF 183 KB
PCN13009 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li (ASECL), Taiwan and STATS ChipPAC (SCM) - Kuala Lump Product Change Notice PDF 173 KB
PCN11117 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 169 KB
Other
ISL9110 iSim:PE Model Schematic SXSCH 189 KB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator iSim 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. Renesas