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.

Features

  • 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)

Applications

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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 250
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL9021A Datasheet Datasheet PDF 625 KB
User Guides & Manuals
ISLUSPLUS-UC1DEMO1Z User Guide Manual PDF 1.55 MB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB

Downloads

Title language Type Format File Size Date
Other
ISLUSPLUS-UC1DEMO1Z Design Files Design File ZIP 1.80 MB

Boards & Kits

Part Number Title Type Company
ISLUSPLUS-UC1DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas
ISLUSPLUS-UC2DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas