Power & Power Management

Overview

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.

ISL9021 Functional Diagram
ISL9021 Functional Diagram
  • 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)
micro-ROS Solutions
ROS-Based Robot Body Controller

Applications

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

Documentation

Title Type Date
ISL9021 Datasheet
PDF543 KB
Datasheet
AN1681: Grounding Techniques
PDF509 KB
Application Note
AN1684: Nonideality of Ground
PDF397 KB
Application Note
PA22026 - MSL1 Packing Change for listed Renesas Products
PDF414 KB
Product Advisory
PCN10114 - Part Marking Configuration Change for Intersil TDFN, uTDFN, and uTQFN Packaged Products
PDF205 KB
Product Change Notice

Design & Development

ECAD Models

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Product Options

    Processing table
    Part Number
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    ISL9021IRU1Z-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRU2Z-T
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    memory
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRU3Z-T
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    memory
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRU4Z-T
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    memory
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUBZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUCZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUFZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUGZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUJZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUKZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUMZ-T
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    memory
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUNZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUPZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRURZ-T
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    memory
    spa
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUSZ-T
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    memory
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    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUTZ-T
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    memory
    spa
    view_in_ar
    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUWZ-T
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 uTDFN Reel 3000 Get Samples,
    ISL9021IRUYZ-T
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 uTDFN Reel 3000 Get Samples,
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