The ISL91117 is a highly-integrated boost switching regulator for battery powered applications. The device provides a power supply solution for products using dual-cell or three-cell alkaline, NiCd or NiMH, or one-cell Li-ion or Li-polymer battery. This device is capable of delivering an output current of 1. 5A with PVIN = 3. 3V and VOUT = 5V. The use of a synchronous rectifier maximizes efficiency at high loads. No-load quiescent current of only 35µA optimizes efficiency under light-load conditions. Forced PWM and/or synchronization to an external clock may also be selected for noise sensitive applications. The ISL91117 is designed for standalone applications and supports 5V fixed output voltage or variable output voltages with an external resistor divider. Power supply solution size is minimized by a 2. 34mm x 1. 72mm WLCSP and a 2. 6MHz switching frequency, which allows for the use of tiny, low-profile inductors and ceramic capacitors to minimize the size of the solution.


  • Input voltage range: 1.8V to 4.8V
  • Fixed 5V or adjustable output
  • Output current: up to 1.5A (PVIN = 3.3V, VOUT = 5V)
  • High efficiency: up to 96%
  • 35µA quiescent current maximizes light-load efficiency
  • True input-output disconnect when disabled
  • 2.6MHz switching frequency minimizes external component size
  • Selectable forced-PWM mode and external synchronization
  • Fully protected for short-circuit, over-temperature and undervoltage
  • Small 2.34mm x 1.72mm WLCSP


  • Smart phones and tablets
  • Wireless communication devices
  • Products including portable HDMI and USB-OTG


文档标题 language 类型 文档格式 文件大小 日期
star ISL91117 Datasheet 数据手册 PDF 856 KB
AN9208: High Frequency Power Converters 应用文档 PDF 592 KB
AN1681: Grounding Techniques 应用文档 PDF 509 KB
AN1684: Nonideality of Ground 应用文档 PDF 397 KB
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options 应用文档 PDF 650 KB
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods 应用文档 PDF 387 KB
AN7244: Understanding Power MOSFETs 应用文档 PDF 349 KB
ISL91117 iSim:PE Model 原理图 SXSCH 212 KB
Five Easy Steps to Create a Multi-Load Power Solution 白皮书 PDF 846 KB



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


器件号 文档标题 类型 公司
ISL91117IIA-EVZ Highly Integrated Boost Switching Regulator Evaluation Board 评估 Renesas