Datasheet > ISL6443A

ISL6443A

更新时间： 2024-12-01 04:58:43

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
19页	300K
描述
300kHz Dual, 180∑ Out-of-Phase, Step-Down PWM and Single Linear Controller

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ISL6443A 数据手册

ISL6443A

Data Sheet

December 7, 2007

FN6600.1

300kHz Dual, 180° Out-of-Phase, Step-Down

PWM and Single Linear Controller

Features

• Wide Input Supply Voltage Range

- Variable 5.6V to 24V

The ISL6443A 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 at 180° out of phase, thus reducing the RMS

input current and ripple voltage.

- Fixed 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 ISL6443A 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

• No External Current Sense Resistor

- Uses Lower MOSFET’s r

DS(ON)

• Bidirectional Frequency Synchronization for

Synchronizing Multiple ISL6443As

overload/short circuit conditions. Each PWM has an

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

• 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

TEMP.

- Voltage Feed-Forward with Current Mode Control

PART

NUMBER

PART

MARKING

RANGE

(°C)

PKG.

DWG. #

PACKAGE

• QFN Packages:

ISL6443AIRZ* 6443A IRZ

(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

ISL6443AIVZ* 6443A IVZ

(See Note)

-40 to +85 28 Ld TSSOP M28.173

(Pb-free)

- Near Chip Scale Package Footprint, which Improves

PCB Efficiency and has a Thinner Profile

Add “-TK” suffix for tape and reel. Please refer to TB347 for details

on reel specifications.

• Pb-Free (RoHS Compliant)

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets; molding compounds/die attach

materials and 100% matte tin plate PLUS ANNEAL - e3 termination

finish, which is 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.

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ISL6443A相关器件

型号	品牌	获取价格	描述	数据表
ISL6443AIRZ	INTERSIL	获取价格	300kHz Dual, 180∑ Out-of-Phase, Step-Down PWM
ISL6443AIVZ	INTERSIL	获取价格	300kHz Dual, 180∑ Out-of-Phase, Step-Down PWM
ISL6443AIVZ	RENESAS	获取价格	300kHz Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller; QFN28,
ISL6443AIVZ-TK	RENESAS	获取价格	300kHz Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller; QFN28,
ISL6443IR	INTERSIL	获取价格	300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller
ISL6443IR-T	INTERSIL	获取价格	300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller
ISL6443IR-TK	INTERSIL	获取价格	300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller
ISL6443IRZ	INTERSIL	获取价格	300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller
ISL6443IRZ-T	INTERSIL	获取价格	300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller
ISL6443IRZ-TK	INTERSIL	获取价格	300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller

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