The ISL9110A 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 part is capable of delivering up to 1.2A output current, and provides excellent efficiency due to its 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 ISL9110A 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 ISL9110A requires only a single inductor and very few external components. Power supply solution size is minimized by a 2.4mm x 1.6mm WLCSP package and a 2.5MHz switching frequency, which further reduces the size of external components.


  • 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
  • Fully Protected for Overcurrent, Over-temperature and Undervoltage
  • Small 2.4mmx1.6mm WLCSP Package


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


器件号 Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active WLCSP-BP Reel 3000
Active WLCSP-BP Reel 3000


文档标题 language 类型 文档格式 文件大小 日期
star ISL9110A Datasheet 数据手册 PDF 1.24 MB
应用指南 & 白皮书
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AN1684: Nonideality of Ground 应用文档 PDF 397 KB
ISL9110A iSim:PE Model 原理图 SXSCH 190 KB


文档标题 类型 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