ISL9440IRZ-T7 datasheet, PDF - EEWORLD Datasheet

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ISL9440IRZ-T7: DescriptionSWITCHING CONTROLLER; CategoryPower/power management The power supply circuit; File Size1MB，20 Pages; ManufacturerRenesas Electronics Corporation; Websitehttps://www.renesas.com/; Environmental Compliance

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ISL9440IRZ-T7 Overview

SWITCHING CONTROLLER

ISL9440IRZ-T7 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Renesas Electronics Corporation
package instruction	,
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
JESD-609 code	e3
Humidity sensitivity level	3
Terminal surface	Matte Tin (Sn) - annealed

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ISL9440, ISL9440A, ISL9441

Data Sheet

February 9, 2015

FN6383.2

Triple, 180° Out-of-Phase, Step-Down

PWM and Single Linear Controller

The ISL9440, ISL9440A and ISL9441 are quad-output

synchronous buck controllers that integrate 3 PWM

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.

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

independent enable inputs for ease of supply rail

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.

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.

The table below shows the difference in terms of the

ISL9440, ISL9440A and ISL9441 features.

PART

NUMBER

ISL9440

ISL9440A

ISL9441

EARLY

WARNING

YES

SWITCHING FREQUENCY

(kHz)

300

600

300

Features

• Three integrated synchronous buck PWM controllers

- Internal bootstrap diodes

- 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)

• Adaptive shoot through protection on all synchronous

buck controllers

• 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)

• Current mode controller with voltage feed forward

• Complete protection

- Overcurrent, overvoltage, undervoltage lockout,

over-temperature

• Cycle-by-cycle current limiting

• Wide input voltage range

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

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

5V input applications): 4.5V to 5.6V

• Early warning (ISL9440, ISL9440A) on input voltage

failure

• 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”

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 trademark owned by Intersil Corporation or one of its subsidiaries.

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

ISL9440IRZ-T7 Related Products

	ISL9440IRZ-T7	ISL9440IRZ-T13	ISL9440AIRZ-T7	ISL9440AIRZ-T13	ISL9441IRZ-T13	ISL9441IRZ-T7
Description	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
Maker	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
Is it Rohs certified?	conform to	conform to	conform to	conform to	-	-
JESD-609 code	e3	e3	e3	e3	-	-
Humidity sensitivity level	3	3	3	3	-	-
Terminal surface	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	-	-

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