Overview

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The ISL6406 is an adjustable frequency, synchronous buck switching regulator optimized for generating lower voltages for the distributed DC/DC architectures. The ISL6406 offers an adjustable output voltage. Designed to drive N-Channel MOSFETs in synchronous buck topology, the ISL6406 integrates the control, output adjustment and protection functions into a single package. The ISL6406 provides simple, single feedback loop, voltage-mode control with fast transient response. The output voltage can be precisely regulated to as low as 0. 8V. The error amplifier features a 15MHz gain-bandwidth product and 6V/µs slew rate which enables high converter bandwidth for fast transient performance. Protection from overcurrent conditions is provided by monitoring the rDS(ON) of the upper MOSFET to inhibit PWM operation appropriately. This approach simplifies the implementation and improves efficiency by eliminating the need for a current sense resistor. The wide programmable switching frequency range of 100kHz to 700kHz allows the use of small surface mount inductors and capacitors. The device also provides external frequency synchronization making it an ideal choice for DC/DC converter applications.

ISL6406 Functional Diagram
ISL6406 Functional Diagram
  • Operates from 3.3V/5V Input
  • 0.8V to VIN Output Range
  • 0.8V Internal Reference
  • ±1.5% Reference Accuracy
  • Simple Single-Loop Control Design
  • Voltage-Mode PWM Control
  • Fast Transient Response
  • High-Bandwidth Error Amplifier
  • Lossless, Programmable Overcurrent Protection
  • Uses Upper MOSFET's rDS(ON)
  • Programmable Switching Frequency 100kHz to 700kHz
  • External Frequency Synchronization
  • Internal Soft-Start
  • QFN Package Option
  • QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Product Outline
  • QFN Near Chip-Scale Package Footprint; Improves PCB Efficiency, Thinner in Profile
  • Pb-Free (RoHS compliant)

Applications

  • 3V/5V DC/DC Converter Modules
  • Distributed DC/DC 33V, 25V and 18V Power Architectures for DSP, Logic, and Memory
  • Power Supplies for Microprocessors PCs Embedded Controllers
  • Memory Supplies
  • Personal Computer Peripherals

Documentation

= Featured Documentation
Type Title Date
Datasheet
ISL6406 Datasheet
PDF 977 KB
End Of Life Notice
PLC18009 - Q2 Standard EOL Notice
PDF 345 KB
Product Change Notice
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP)
PDF 98 KB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
Guide
ISL6406EVAL1x User Guide
PDF 584 KB
6 items

Design & Development

Boards & Kits

ISL6406EVAL1 PWM Controller Eval Board

ISL6406EVAL1

Evaluation
Learn More

Single Synchronous Buck PWM Controller Evaluation Board

The ISL6406EVAL3, ISL6406EVAL2 and ISL6406EVAL1 evaluation boards highlight the operation of the ISL6406 adjustable frequency, synchronous buck switching regulator in...

Featured Documents:
ISL6406EVAL1x User Guide

ISL6406EVAL2

Evaluation
Learn More

Single Synchronous Buck PWM Controller Evaluation Board

The ISL6406EVAL3, ISL6406EVAL2 and ISL6406EVAL1 evaluation boards highlight the operation of the ISL6406 adjustable frequency, synchronous buck switching regulator in...

Featured Documents:
ISL6406EVAL1x User Guide
ISL6406EVAL1 PWM Controller Eval Board

ISL6406EVAL3

Evaluation
Learn More

Single Synchronous Buck PWM Controller Evaluation Board

The ISL6406EVAL3, ISL6406EVAL2 and ISL6406EVAL1 evaluation boards highlight the operation of the ISL6406 adjustable frequency, synchronous buck switching regulator in...

Featured Documents:
ISL6406EVAL1x 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
    MOQ
    Buy / Sample
    Part Number
    ISL6406IVZ
    circleObsolete
    memory
    view_in_ar
    		TSSOP Tube 960
    ISL6406IVZ-T
    circleObsolete
    memory
    view_in_ar
    		TSSOP Reel 2500
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