isl6441 Intersil Corporation, isl6441 Datasheet

isl6441

Manufacturer Part Number

isl6441

Description

1.4mhz Dual, 180? Out-of-phase, Step-down Pwm And Single Linear Controller

Manufacturer

Intersil Corporation

Datasheet

1.ISL6441.pdf (18 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

isl6441IR

Manufacturer:

INTERSIL

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

isl6441IRZ

Manufacturer:

Intersil

Quantity:

600

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

isl6441IRZ

Manufacturer:

IHTERSIL

Quantity:

2 500

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

isl6441IRZ-TK

Manufacturer:

Intersil

Quantity:

2 400

Current page: 1 of 18
Download datasheet (383Kb)

1.4MHz Dual, 180° Out-of-Phase, Step-

Down PWM and Single Linear Controller

The ISL6441 is a high-performance, triple-output controller

optimized for converting wall adapter, battery or network

intermediate bus DC input supplies into the system supply

voltages required for a wide variety of applications. Each

output is adjustable down to 0.8V. The two PWMs are

synchronized 180

current and ripple voltage.

The ISL6441 incorporates several protection features. An

adjustable overcurrent protection circuit monitors the output

current by sensing the voltage drop across the lower

MOSFET. Hiccup mode overcurrent operation protects the

DC/DC components from damage during output

overload/short circuit conditions. Each PWM has an

independent logic-level shutdown input (SD1 and SD2).

A single PGOOD signal is issued when soft-start is complete

on both PWM controllers and their outputs are within 10% of

the set point and the linear regulator output is greater than

75% of its setpoint. Thermal shutdown circuitry turns off the

device if the junction temperature exceeds +150°C.

Ordering Information

ISL6441IR

ISL6441IRZ

(See Note)

Add “-T” or “-TK” suffix to part number for tape and reel packaging.

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.

NUMBER

PART

ISL6441IR

ISL6441IRZ

MARKING

PART

out of phase reducing the RMS input

-40 to 85

RANGE

TEMP.

(°C)

28 Ld QFN

(Pb-free)

Data Sheet

PACKAGE

L28.5x5

DWG. #

PKG.

1-888-INTERSIL or 1-888-468-3774

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

Features

• Wide Input Supply Voltage Range

• Three Independently Programmable Output Voltages

• Switching Frequency . . . . . . . . . . . . . . . . . . . . . . .1.4MHz

• Out of Phase PWM Controller Operation

• No External Current Sense Resistor

• Bi-directional Frequency Synchronization for

• Programmable Soft-Start

• Extensive Circuit Protection Functions

• Excellent Dynamic Response

• QFN Package:

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Power Supplies with Multiple Outputs

• xDSL Modems/Routers

• DSP, ASIC, and FPGA Power Supplies

• Set-Top Boxes

• Dual Output Supplies for DSP, Memory, Logic, µP Core

• Telecom Systems

- 5.6V to 24V

- 4.5V to 5.6V

- Reduces Required Input Capacitance and Power

- Uses Lower MOSFET’s r

Synchronizing Multiple ISL6441s

- PGOOD

- UVLO

- Overcurrent

- Overtemperature

- Independent Shutdown for Both PWMs

- Voltage Feed-Forward with Current Mode Control

- QFN - Compliant to JEDEC PUB95 MO-220

- Near Chip Scale Package footprint, which improves

and I/O

Supply Induced Loads

QFN - Quad Flat No Leads - Package Outline

PCB efficiency and has a thinner profile

October 4, 2005

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

Intersil (and design) is a registered trademark of Intersil Americas Inc.

DS(ON)

ISL6441

FN9197.1

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