ISL9021A

Overview

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

Documentation


Type	Title	Date
Datasheet	ISL9021A Datasheet PDF 625 KB	Jun 3, 2009
Product Advisory	PA22026 - MSL1 Packing Change for listed Renesas Products PDF 414 KB	Aug 26, 2022
Manual - Development Tools	ISLUSPLUS-UC1DEMO1Z User Guide PDF 1.55 MB	May 2, 2017
Application Note	AN1681: Grounding Techniques PDF 509 KB	Jan 19, 2004
Application Note	AN1684: Nonideality of Ground PDF 397 KB	Jan 19, 2004
5 items

Design & Development

Software Downloads


Type	Title	Date
PCB Design Files	ISLUSPLUS-UC1DEMO1Z Design Files ZIP 1.80 MB	Aug 28, 2018
1 item

ISLUSPLUS-UC1DEMO1Z

Demonstration

Learn More

Power Supply Reference Demo Board for the AMD Zynq Ultrascale+™ MPSoC

The ISLUSPLUS-UC1DEMO1Z and ISLUSPLUS-UC2DEMO1Z designs provide a power supply reference solution for the AMD Zynq™ UltraScale+™ MPSoC.

The power supply rail...

Featured Documents:

ISLUSPLUS-UC1DEMO1Z User Guide

ISLUSPLUS-UC2DEMO1Z

Demonstration

Learn More

Power Supply Reference Demo Board for the AMD Zynq Ultrascale+™ MPSoC

The ISLUSPLUS-UC1DEMO1Z and ISLUSPLUS-UC2DEMO1Z designs provide a power supply reference solution for the AMD Zynq™ UltraScale+™ MPSoC.

The power supply rail...

Featured Documents:

ISLUSPLUS-UC2DEMO1Z User Guide

RZ/V2M-EVKIT

Evaluation

Learn More

RZ/V2M Evaluation Board Kit

This product is an evaluation board with RZ/V2M configured as the key device and is capable of easily implementing software development such as camera sensor input...

Featured Documents:

RZ/V2M Evaluation Board Kit Booklet

Available on Lab on the Cloud

Use our PC-based GUI to instantly start configuring and testing designs in our virtual lab, no physical board needed.

Launch Lab on the Cloud

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models

Product Options

Processing table

	Pkg. Type	Carrier Type	Price (USD) \| 1ku	Buy / Sample
(26) Obsolete / NRND / LTB	WLCSP-BP uTDFN	Reel	Maximum Price estimate for 1,000 units; pricing is subject to change. Minimum Price estimate for 1,000 units; pricing is subject to change.	Buy / Quote
Part Number	Logical Operator	Logical Operator		Logical Operator
ISL9021AIIBZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	WLCSP-BP	Reel		Buy / Quote
ISL9021AIICZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	WLCSP-BP	Reel		Buy / Quote
ISL9021AIIFZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	WLCSP-BP	Reel		Buy / Quote
ISL9021AIIKZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	WLCSP-BP	Reel		Buy / Quote
ISL9021AIIMZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	WLCSP-BP	Reel		Buy / Quote
ISL9021AIINZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	WLCSP-BP	Reel		Buy / Quote
ISL9021AIIUZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	WLCSP-BP	Reel		Buy / Quote
ISL9021AIIWZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	WLCSP-BP	Reel	0.6244	Buy / Quote
ISL9021AIRUBZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUBZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUCZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel	0.7521	Buy / Quote
ISL9021AIRUCZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUFZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel	0.7272	Buy / Quote
ISL9021AIRUFZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel		Buy / Quote
ISL9021AIRUJZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUJZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUKZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel	0.6974	Buy / Quote
ISL9021AIRUKZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUMZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUMZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel	1.37	Buy / Quote
ISL9021AIRUNZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel	0.7596	Buy / Quote
ISL9021AIRUNZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUWZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel	0.7596	Buy / Quote
ISL9021AIRUWZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUYZ-T circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	uTDFN	Reel		Buy / Quote
ISL9021AIRUYZ-T7A circleObsolete memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Buy Now	uTDFN	Reel	0.9898	Buy / Quote

Tips for Using This Parametric Table:

Hide Filters button in header: Collapse or expands filters
Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
Reset button in header: Reset all filters to the page default
Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
Export button in header: Export the filtered results of the table to an Excel document
Filter parts search bar in header: Type to filter table results by part number
Hide column button in column headers: Select to hide columns in table
AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
Document icon next to product name in row: View the featured document for this product
Chip icon next to the right of the document icon in row: View the block diagram for this product
Cart icon to the right of the chip icon: Indicates that samples are available for this product

Microcontrollers & Microprocessors

Applications

Design Resources

Support

Sample & Buy

About

Language

250mA Single LDO with Low IQ, Low Noise and High PSRR LDO

Overview

Documentation