Datasheet > ISL6443IRZ-TK

ISL6443IRZ-TK

更新时间： 2024-11-24 22:14:15

品牌	Logo	应用领域
英特矽尔 - INTERSIL		开关控制器
页数	文件大小	规格书
18页	395K
描述
300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller

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ISL6443IRZ-TK 数据手册

ISL6443

Data Sheet

October 4, 2005

FN9044.1

300kHz Dual, 180° Out-of-Phase, Step-

Down PWM and Single Linear Controller

Features

• Wide Input Supply Voltage Range

- 5.6V to 24V

The ISL6443 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° out of phase reducing the RMS input

current and ripple voltage.

- 4.5V to 5.6V

• Three Independently Programmable Output Voltages

• Switching Frequency . . . . . . . . . . . . . . . . . . . . . . .300kHz

• Out of Phase PWM Controller Operation

- Reduces Required Input Capacitance and Power

Supply Induced Loads

The ISL6443 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).

• No External Current Sense Resistor

- Uses Lower MOSFET’s r

DS(ON)

• Bidirectional Frequency Synchronization for

Synchronizing Multiple ISL6443s

• Programmable Soft-Start

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.

• Extensive circuit protection functions

- PGOOD

- UVLO

- Overcurrent

- Over-temperature

- Independent Shutdown for Both PWMs

Ordering Information

• Excellent Dynamic Response

- Voltage Feed-Forward with Current Mode Control

PART

TEMP.

PKG.

NUMBER MARKING RANGE (°C) PACKAGE

DWG. #

ISL6443IR ISL6443IR

-40 to 85 28 Ld 5x5 QFN L28.5x5

• QFN Packages:

ISL6443IRZ ISL6443IRZ

(See Note)

-40 to 85 28 Ld 5x5 QFN L28.5x5

(Pb-free)

- QFN - Compliant to JEDEC PUB95 MO-220

QFN - Quad Flat No Leads - Package Outline

Add “-T” or “-TK” suffix for tape and reel.

- Near Chip Scale Package footprint, which improves

PCB efficiency and has a thinner profile

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.

• 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

and I/O

• Telecom Systems

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ISL6443IRZ-TK相关器件

型号	品牌	获取价格	描述	数据表
ISL6444	INTERSIL	获取价格	Dual PWM Controller with DDR Memory Option for Gateway Applications
ISL6444_07	INTERSIL	获取价格	Dual PWM Controller with DDR Memory Option for Gateway Applications
ISL6444CA	INTERSIL	获取价格	Dual PWM Controller with DDR Memory Option for Gateway Applications
ISL6444CA-T	INTERSIL	获取价格	Dual PWM Controller with DDR Memory Option for Gateway Applications
ISL6444CAZ	INTERSIL	获取价格	Dual PWM Controller with DDR Memory Option for Gateway Applications
ISL6445	INTERSIL	获取价格	1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller
ISL6445IAZ	INTERSIL	获取价格	1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller
ISL6445IAZ-TK	INTERSIL	获取价格	1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller
ISL6446	INTERSIL	获取价格	Dual (180Â° Out-of-Phase) PWM and Linear Cont
ISL6446A	INTERSIL	获取价格	Dual (180Â°Out-of-Phase) PWM and Linear Contr

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