The ISL9021 is a single LDO providing high performance low input voltage, 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 ISL9021 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. Other output voltage within the range of 0. 9V to 3. 3V may be available upon request. The ISL9021 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 ISL9021 is offered in tiny 4-bump 1. 155mmx0. 975mm 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: 0.9V 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 1.155mmx0.975mm 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 uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability
Active uTDFN Reel 3000
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL9021 Datasheet Datasheet PDF 543 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
PCNs & PDNs
PCN10114 - Part Marking Configuration Change for Intersil TDFN, uTDFN, and uTQFN Packaged Products Product Change Notice PDF 205 KB