The ISL9021A is a single LDO, which provides high performance, low input voltage and high PSRR. It delivers guaranteed continuous 250mA load current and is stable with 1µF to 4. 7µF of output capacitance (±30%) with an ESR range of 5mΩ to 400mΩ. The input voltage range for the ISL9021A is between 1. 5V to 5. 5V and the output voltage comes in many fixed voltage options with ±1. 8% accuracy over-temperature, line and load ranges. The ISL9021A has typical PSRR of 75dB @ 10kHz and 50dB @ 1MHz. The reverse current protection feature prevents current from flowing back to the power source when the output voltage is pulled higher than the input. The ISL9021A is offered in tiny 4-bump 0. 975mmx1. 155mm WLCSP and 1. 6mmx1. 6mm 6 Ld µTDFN packages.


  • High Performance LDO with 250mA Guaranteed Continuous Output Current
  • Input Voltage Range: 1.5V to 5.5V
  • Output Voltage Range: 1.2V to 3.3V
  • High PSRR: 75dB @ 10kHz, 50dB @ 1MHz
  • Low Quiescent Current: 35µA
  • Dropout Voltage: <150mV @ 250mA
  • Stable with 1µF to 4.7µF Output Capacitance (±30%) with an ESR range of 5mΩ to 400mΩ
  • ±1.8% Output Accuracy Over-Temperature/Load/Line
  • Soft-start Limits Input Current Surge During Enable
  • Current Limit and Overheat Protection
  • -40°C to +85°C Operating Temperature Range
  • Available in 0.975mmx1.155mm 4-bump WLCSP Package and 1.6mmx1.6mm 6 Ld µTDFN
  • Pb-free (RoHS compliant)


  • PDAs, Cell Phones and Smart Phones
  • Portable Instruments, MP3 Players
  • Handheld Devices including Medical Handhelds


文档标题 language 类型 文档格式 文件大小 日期
star ISL9021A Datasheet 数据手册 PDF 625 KB
AN1681: Grounding Techniques 应用文档 PDF 509 KB
AN1684: Nonideality of Ground 应用文档 PDF 397 KB
ISLUSPLUS-UC1DEMO1Z User Guide 手册 - 开发工具 PDF 1.55 MB
Five Easy Steps to Create a Multi-Load Power Solution 白皮书 PDF 846 KB


文档标题 language 类型 文档格式 文件大小 日期
ISLUSPLUS-UC1DEMO1Z Design Files PCB设计文档 ZIP 1.80 MB


器件号 文档标题 类型 公司
ISLUSPLUS-UC1DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC 演示 Renesas
ISLUSPLUS-UC2DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC 演示 Renesas