Datasheet > ISL9440A

ISL9440A

更新时间： 2024-11-28 02:57:35

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
20页	1494K
描述
Triple, 180Â° Out-of-Phase, Step-Down PWM and Single Linear Controller

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中文翻译

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ISL9440A 数据手册

DATASHEET

ISL9440, ISL9440A, ISL9441

Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller

FN6383

Rev 2.00

February 9, 2015

The ISL9440, ISL9440A and ISL9441 are quad-output

synchronous buck controllers that integrate 3 PWM

Features

• Three integrated synchronous buck PWM controllers

- Internal bootstrap diodes

controllers and 1 low drop-out linear regulator controller, which

are full featured and designed to provide multi-rail power for

use in products such as cable and satellite set-top boxes,

VoIP gateways, cable modems, and other home connectivity

products as well as a variety of industrial and general purpose

applications. Each output is adjustable down to 0.8V. The

PWMs are synchronized at 180° out of phase thus reducing

the RMS input current and ripple voltage.

- Internal compensation

- Internal soft-start

• Independent control for each regulator and programmable

output voltages; independent enable/shutdown

• Fixed Switching Frequency: 300kHz (ISL9440, ISL9441);

600kHz (ISL9440A)

The ISL9440, ISL9440A and ISL9441 offer internal soft-start,

independent enable inputs for ease of supply rail

• Adaptive shoot through protection on all synchronous

buck controllers

sequencing, and integrated UV/OV/OC/OT protections in a

space conscious 5mmx5mm QFN package. The ISL9440

and ISL9440A offers an early warning function to output a

logic signal to warn the system to back up data when the

input voltage falls below a certain level.

• Independently programmable voltage outputs

• Out-of-phase switching to reduce input capacitance

(0°/180°/0°)

• No external current sense resistor

- Uses lower MOSFET’s r_DS(ON)

The ISL9440, ISL9440A and ISL9441 are utilize internal loop

compensation to keep minimum peripheral components for

compact design and a low total solution cost. These devices

are implemented with current mode control with feed forward

to cover various applications even with fixed internal

compensations.

• Current mode controller with voltage feed forward

• Complete protection

- Overcurrent, overvoltage, undervoltage lockout,

over-temperature

• Cycle-by-cycle current limiting

The table below shows the difference in terms of the

ISL9440, ISL9440A and ISL9441 features.

• Wide input voltage range

- Input rail powers VIN Pin: 5.6V to 24V

PART

NUMBER

EARLY

WARNING

SWITCHING FREQUENCY

(kHz)

- Input rail powers VCC_5V Pin (VIN tied to VCC_5V, for

5V input applications): 4.5V to 5.6V

ISL9440

YES

300

600

300

• Early warning (ISL9440, ISL9440A) on input voltage

failure

ISL9440A

ISL9441

• Integrated reset function (ISL9440, ISL9440A)

• Pb-free (RoHS compliant)

Applications

• Satellite and cable set-top boxes

• Cable modems

• VoX gateway devices

• NAS/SAN devices

Related Literature

• Technical Brief TB389 “PCB Land Pattern Design and

Surface Mount Guidelines for QFN (MLFP) Packages”

FN6383 Rev 2.00

February 9, 2015

Page 1 of 20

12 3 4 5 6 7...20

中文翻译

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与ISL9440A相关器件

型号	品牌	获取价格	描述	数据表
ISL9440AEVAL1Z	INTERSIL	获取价格	Triple PWM Step-Down Synchronous Buck Controller and One LDO
ISL9440AIRZ	RENESAS	获取价格	Triple, 180Â° Out-of-Phase, Step-Down PWM and
ISL9440AIRZ	INTERSIL	获取价格	Triple, 180Â° Out-of-Phase, Step-Down
ISL9440AIRZ-T13	RENESAS	获取价格	SWITCHING CONTROLLER
ISL9440AIRZ-T7	RENESAS	获取价格	SWITCHING CONTROLLER
ISL9440B	INTERSIL	获取价格	Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start
ISL9440B	RENESAS	获取价格	Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start
ISL9440BEVAL1Z	INTERSIL	获取价格	Triple PWM Step-Down Synchronous Buck Controller and One LDO
ISL9440BIRZ	INTERSIL	获取价格	Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start
ISL9440BIRZ	RENESAS	获取价格	Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start; QFN32; Tem

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