Overview

The ISL8500 is a high-performance, simple output controller that provides a single, high frequency power solution for a variety of point-of-load applications. The ISL8500 integrates a 2A standard buck PWM controller and switching MOSFET. The PWM controller in the ISL8500 drives an internal switching N-Channel power MOSFET and requires an external Schottky diode to generate an output voltage from 0.6V to 19V. The integrated power switch is optimized for excellent thermal performance up to 2A of output current. The standard buck input voltage range supports a fixed 5V or variable 5.5V to 25V range. The PWM regulator switches at a fixed frequency of 500kHz and utilizes simple voltage mode control with input voltage feed forward to provide flexibility in component selection and minimize solution size. Protection features include overcurrent, undervoltage and thermal overload protection integrated into the IC. The ISL8500 power good signal output indicates loss of regulation on the PWM output. ISL8500 is available in a small 4mm x 3mm Dual Flat No-Lead (DFN) package.

ISL8500 Functional Diagram
ISL8500 Functional Diagram
  • Standard Buck Controller with Integrated Switching Power MOSFET
  • Integrated Boot Diode
  • Input Voltage Range
  • Fixed 5V ±10%
  • Variable 5.5V to 25V
  • PWM Output Voltage Adjustable from 0.6V to 19V with Continuous Output Current up to 2A
  • ±1% VFB Tolerance
  • Voltage Mode Control with Voltage Feed Forward
  • Fixed 500kHz Switching Frequency
  • Externally Adjustable Soft-Start Time
  • Output Undervoltage Protection
  • Enable Inputs
  • PGOOD Output
  • Overcurrent Protection
  • Thermal Overload Protection
  • Internal 5V LDO regulator

Applications

  • General Purpose
  • WLAN Cards-PCMCIA, Cardbus32, MiniPCI Cards-Compact Flash Cards
  • Hand-Held Instruments
  • LCD Panel
  • Set-top Box

Documentation

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
ISL8500 iSim:PE Model
 Simulator Renesas
1 item

ISL8500EVAL1Z

Evaluation
Learn More

2A Standard Buck PWM Regulator Evaluation Board

The ISL8500EVAL1Z REV A kit is intended for use by individuals with requirements for point-of-load (POL) applications sourcing from 4.5V to 25V and 9V to 14V...

Featured Documents:
ISL8500EVAL1Z User Guide
ISL8500EVAL2Z Buck PWM Regulator Eval Board

ISL8500EVAL2Z

Evaluation
Learn More

2A Standard Buck PWM Regulator Evaluation Board

The ISL8500EVAL2Z REV A kit is intended for use by individuals with requirements for point-of-load (POL) applications sourcing from 4.5V to 25V and 9V to 14V...

Featured Documents:
ISL8500EVAL2Z 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.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    ISL8500IRZ
    circleActive
    memory
    spa
    view_in_ar
    Samples Available
    Buy Now
    		DFN Tube 2.675 Get Samples,
    ISL8500IRZ-T
    circleActive
    memory
    spa
    view_in_ar
    		DFN Reel
    Parametric Table tips

    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