Power & Power Management

Overview

The ISL8018 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 8A continuous output current from a 2. 7V to 5. 5V input supply. The output voltage is adjustable from 0. 6V to VIN. With an adjustable current limit, reverse current protection, prebias start and over-temperature protection, the ISL8018 offers a highly robust power solution. It uses current control architecture to deliver fast transient response and excellent loop stability. The ISL8018 integrates a pair of low ON-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count. 100% duty-cycle operation allows less than 250mV dropout at 8A output current. Adjustable frequency and synchronization allow the ISL8018 to be used in applications requiring low noise. The ISL8018 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads. The ISL8018 is offered in a space saving 20 Ld 3x4 QFN lead free package with exposed pad lead frames for excellent thermal performance. The complete converter occupies less than 96. 8mm2 area.

ISL8018 Functional Diagram
ISL8018 Functional Diagram
  • High efficiency synchronous buck regulator with up to 97% efficiency
  • ±10% output voltage margining
  • Adjustable current limit
  • Start-up with prebiased output
  • Internal soft-start - 1ms or adjustable, internal/external compensation
  • Soft-stop output discharge during disabled
  • Adjustable frequency from 500kHz to 4MHz - default at 1MHz
  • External synchronization up to 4MHz - master to slave phase shifting capability
  • Peak current limiting, hiccup mode short-circuit protection and over-temperature protection
Access Point for Fixed Wireless Access (FWA)
Scalable HMI SMARC SoM with AI

Documentation

Title
Type 		Date
ISL8018 Datasheet
PDF 1.27 MB 		Datasheet
Industrial Power Management Brochure
PDF 5.51 MB 日本語 		Brochure
PCN23005 - Alternate RDL Pad Plating used in the listed Renesas QFN and TQFN packaged products
PDF 178 KB 		Product Change Notice
AN9208: High Frequency Power Converters
PDF 592 KB 		Application Note
AN1681: Grounding Techniques
PDF 509 KB 		Application Note
AN1684: Nonideality of Ground
PDF 397 KB 		Application Note
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options
PDF 650 KB 		Application Note
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods
PDF 387 KB 		Application Note
AN7244: Understanding Power MOSFETs
PDF 349 KB 		Application Note
9 items

Design & Development

Software & Tools
iSim:PE Offline Simulation Tool
iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
Downloads
ISL8018 iSim:PE Model
 Simulator Renesas
1 item

Boards & Kits

ISL8018DEMO1Z Board Top

ISL8018DEMO1Z

Demonstration
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8A Low Quiescent Current High-Efficiency Synchronous Buck Regulator Demonstration Board

The ISL8018DEMO1Z demonstration board is intended for use by individuals with requirements for point-of-load applications sourcing from 2.7V to 5.5V. The ISL8018DEMO1Z...

Featured Documents:
ISL8018DEMO1Z User Guide
ISL8018EVAL3Z Board Top

ISL8018EVAL3Z

Evaluation
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8A Low Quiescent Current High-Efficiency Synchronous Buck Regulator Evaluation Board

The ISL8018EVAL3Z evaluation board is intended for use by individuals with requirements for point-of-load applications sourcing from 2.7V to 5.5V. The ISL8018EVAL3Z is...

Featured Documents:
ISL8018EVAL3Z User Guide

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.

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Diagram of ECAD Models

Models

Title
Type Date
ISL8018 iSim:PE Model
SXSCH 287 KB 		Model - iSim
1 item

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    Part Number
    ISL8018IRAJZ-T
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    memory
    spa
    view_in_ar
    Samples Available
    		 QFN Reel 6000 Get Samples,
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