This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.


Switching Controllers ONE-PHS INT DC/DC BUCK CNTRLR 40LD 6X6

Inquiry Add To Bom

ISL6261CRZ General Description

The ISL6261 is a single-phase buck regulator implementing lntel® IMVP-6® protocol, with embedded gate drivers. The heart of the ISL6261 is the patented R3 Technology™, Intersil's Robust Ripple Regulator modulator. Compared with the traditional multi-phase buck regulator, the R3 Technology™ has faster transient response. This is due to the R3 modulator commanding variable switching frequency during a load transient. lntel® Mobile Voltage Positioning (IMVP) is a smart voltage regulation technology effectively reducing power dissipation in lntel® Pentium processors. To boost battery life, the ISL6261 supports DPRSLRVR (deeper sleep) function and maximizes the efficiency via automatically changing operation modes. At heavy load in the active mode, the regulator commands the continuous conduction mode (CCM) operation. When the CPU enters deeper sleep mode, the ISL6261 enables diode emulation to maximize the efficiency at light load. Asserting the FDE pin of the ISL6261 in deeper sleep mode will further decrease the switching frequency at light load and increase the regulator efficiency. A 7-bit digital-to-analog converter (DAC) allows dynamic adjustment of the core output voltage from 0. 300V to 1. 500V. The ISL6261 has 0. 5% system voltage accuracy over temperature. A unity-gain differential amplifier provides remote voltage sensing at the CPU die. This allows the voltage on the CPU die to be accurately measured and regulated per lntel® IMVP-6 specification. Current sensing can be implemented through either lossless inductor DCR sensing or precise resistor sensing. If DCR sensing is used, an NTC thermistor network will thermally compensates the gain and the time constant variations caused by the inductor DCR change.

Key Features

  • Precision single-phase CORE voltage regulator
  • - 0.5% system accuracy over temperature
  • - Enhanced load line accuracy
  • Internal gate driver with 2A driving capability
  • Microprocessor voltage identification input
  • - 7-Bit VID input
  • - 0.300V to 1.500V in 12.5mV steps
  • - Support VID change on-the-fly
  • Multiple current sensing schemes supported
  • - Lossless inductor DCR current sensing
  • - Precision resistive current sensing
  • Thermal monitor
  • User programmable switching frequency
  • Differential remote voltage sensing at CPU die
  • Overvoltage, undervoltage, and overcurrent protection
  • Pb-free plus anneal available (RoHS compliant)


Manufacturer Renesas Electronics Product Category Switching Controllers
RoHS Details Topology Buck
Number of Outputs 1 Output Switching Frequency 333 kHz
Duty Cycle - Max - Input Voltage 5 V to 21 V
Output Voltage 300 mV to 1.5 V Output Current 4 A
Minimum Operating Temperature - 10 C Maximum Operating Temperature + 100 C
Mounting Style SMD/SMT Package / Case QFN-40
Brand Renesas / Intersil Height 0.9 mm
Length 6 mm Moisture Sensitive Yes
Product Type Switching Controllers Series ISL6261
Factory Pack Quantity 50 Subcategory PMIC - Power Management ICs
Type Buck Controller Width 6 mm
Unit Weight 0.003598 oz


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


You need to log in to reply. Sign In | Sign Up

Buying Guide

  • What is the lifespan of ISL6261CRZ?

    The lifespan of ISL6261CRZ depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of ISL6261CRZ?

    You can find it with PDF Datasheet for ISL6261CRZ on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of ISL6261CRZ?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

  • Where to view my order of ISL6261CRZ or my history order record?

    You could view all of your orders by logging in or registering AVAQ account. Log in or Register an account now.