Datasheet > ISL65426

ISL65426

更新时间： 2024-11-28 04:58:43

品牌	Logo	应用领域
英特矽尔 - INTERSIL		稳压器
页数	文件大小	规格书
22页	792K
描述
6A Dual Synchronous Buck Regulator with Integrated MOSFETs

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ISL65426 数据手册

ISL65426

Data Sheet

November 14, 2006

FN6340.1

6A Dual Synchronous Buck Regulator

with Integrated MOSFETs

Features

• High Efficiency: Up to 95%

The ISL65426 is a high efficiency dual output monolithic

synchronous buck converter operating over an input

voltage range of 2.375V to 5.5V. This single chip power

solution provides two output voltages which are selectable

or externally adjustable from 1V to 80% of the supply

voltage while delivering up to 6A of total output current. The

two PWMs are synchronized 180° out of phase reducing

the RMS input current and ripple voltage.

• Fixed Frequency: 1MHz

• Operates From 2.375V to 5.5V Supply

• ±1% Reference

• Flexible Output Voltage Options

- Programmable 2-Bit VID Input

- Adjustable Output From 0.6V to 4.0V

• User-Partitioned Power Blocks

The ISL65426 switches at a fixed frequency of 1MHz and

utilizes current-mode control with integrated compensation

to minimize the size and number of external components

and provide excellent transient response. The internal

synchronous power switches are optimized for good

thermal performance, high efficiency, and eliminate the

need for an external Schottky diode.

• Ultra-Compact DC/DC Converter Design

• PWMs Synchronized 180° Out of Phase

• Independent Enable Inputs and System Enable

• Stable All Ceramic Solutions

• Excellent Dynamic Response

• Independent Output Digital Soft-Start

• Power Good Output Voltage Monitor

• Short-Circuit and Thermal-Overload Protection

• Overcurrent and Undervoltage Protection

• Pb-Free Plus Anneal Available (RoHS Compliant)

A unique power block architecture allows partitioning of six

1A capable blocks to support one of four configuration

options. One master power block is associated with each

synchronous converter channel. Four floating slave power

blocks allow the user to assign them to either channel.

Proper external configuration of the power blocks is verified

internally prior to soft-start initialization.

Applications

• FPGA, CPLD, DSP, and CPU Core and I/O Voltages

- Xilinx Spartan III^TM, Virtex II^TM, Virtex II Pro^TM

Virtex 4^TM

- Altera Stratix^TM, Stratix II^TM, Cyclone^TM, Cyclone II^TM

- Actel Fusion^TM, LatticeSC^TM, LatticeEC^TM

Independent enable inputs allow for synchronization or

sequencing soft-start intervals of the two converter

channels. A third enable input allows additional sequencing

for multi-input bias supply designs. Individual power good

indicators (PG1, PG2) signal when output voltage is within

regulation window.

• Low-Voltage, High-Density Distributed Power Systems

The ISL65426 integrates protection for both synchronous

buck regulator channels. The fault conditions include

overcurrent, undervoltage, and IC thermal monitor.

• Point-of-Load Regulation

• Distributed Power Systems

• Set-Top Boxes

High integration contained in a thin Quad Flat No-lead

(QFN) package makes the ISL65426 an ideal choice to

power many of today’s small form factor applications. A

single chip solution for large scale digital ICs, like field

programmable gate arrays (FPGA), requiring separate core

and I/O voltages.

Ordering Information

PART

NUMBER

(Note)

TEMP.

RANGE PACKAGE

(°C)

PART

MARKING

PKG.

(Pb-free) DWG. #

ISL65426HRZ* ISL65426 HRZ -10 to +100 50 Ld 5x10 L50.5x10

QFN

*Add “-T” suffix for tape and reel.

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100% matte

tin plate termination finish, which are RoHS compliant and compatible

with both SnPb and Pb-free soldering operations. Intersil Pb-free

products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

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与ISL65426相关器件

型号	品牌	获取价格	描述	数据表
ISL65426_07	INTERSIL	获取价格	6A Dual Synchronous Buck Regulator with Integrated MOSFETs
ISL65426HRZ	INTERSIL	获取价格	6A Dual Synchronous Buck Regulator with Integrated MOSFETs
ISL65426IRZA	INTERSIL	获取价格	6A Dual Synchronous Buck Regulator with Integrated MOSFETs
ISL65426MREP	INTERSIL	获取价格	Enhanced Product (EP) 6.0A Dual Synchronous Buck Regulator with Integrated MOSFETs
ISL65426MREP-TK	RENESAS	获取价格	DUAL SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC50, 5 X 10 MM, PLASTIC, QFN-50
ISL65426MREPZ	RENESAS	获取价格	ISL65426MREPZ
ISL65426MREPZ-TK	RENESAS	获取价格	ISL65426MREPZ-TK
ISL6545	INTERSIL	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6545	RENESAS	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6545A	INTERSIL	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

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