ISL6405ERZ Intersil, ISL6405ERZ Datasheet

ISL6405ERZ

Manufacturer Part Number

ISL6405ERZ

Description

IC VOLT REG DUAL LNB 32-QFN

Manufacturer

Intersil

Datasheets

1.ISL6405ERZ.pdf (13 pages)

2.ISL6405ERZ.pdf (13 pages)

Specifications of ISL6405ERZ

Applications

Converter, Satellite Set-Top Box Designs

Voltage - Input

8 ~ 14 V

Number Of Outputs

Voltage - Output

13 ~ 18 V

Operating Temperature

-20°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL6405ERZ

Manufacturer:

INTERSIL

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL6405ERZ-T

Manufacturer:

VISHAY

Quantity:

30 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL6405ERZ-T

Manufacturer:

INTERSIL

Quantity:

20 000

Current page: 1 of 13
Download datasheet (342Kb)

Dual Output LNB Supply and Control

Voltage Regulator with I

Advanced Satellite Set-Top Box Designs

The ISL6405 is a highly integrated voltage regulator and

interface IC, specifically designed for supplying power and

control signals from advanced satellite set-top box (STB)

modules to the low noise blocks (LNBs) of two antenna

ports. The device is comprised of two independent current-

mode boost PWMs and two low-noise linear regulators along

with the circuitry required for 22kHz tone generation,

modulation and I

total LNB supply design simple, efficient and compact with

low external component count.

Two independent current-mode boost converters provide the

linear regulators with input voltages that are set to the final

output voltages, plus typically 1.2V to insure minimum power

dissipation across each linear regulator. This maintains

constant voltage drops across each linear pass element

while permitting adequate voltage range for tone injection.

The final regulated output voltages are available at two

output terminals to support simultaneous operation of two

antenna ports for dual tuners. The outputs for each PWM are

set to 13V or 18V by independent voltage select commands

(VSEL1, VSEL2) through the I

compensate for the voltage drop in the coaxial cable, the

selected voltage may be increased by 1V with the line length

compensation (LLC) feature. All the functions on this IC are

controlled via the I

and two bits will report the diagnostic status. Separate enable

commands sent on the I

mode control for each PWM and linear combination, disabling

the output into shutdown mode.

Each output channel is capable of providing 750mA of

continuous current. The overcurrent limit can be digitally

programmed. The SEL18V pin with QFN package allows the

13V to 18V transition with an external pin, over-riding the I

input.

C device interface. The device makes the

C bus by writing 8 bits on System

C bus provide independent standby

C bus. Additionally, to

C Interface for

Data Sheet

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

1-888-INTERSIL or 321-724-7143

Features

• Single Chip Power solution

• Switch-Mode Power Converter for Lowest Dissipation

• I

• External Pins to Select 13V/18V Options

• Built-In Tone Oscillator Factory Trimmed to 22kHz

• Internal Over-Temperature Protection and Diagnostics

• Internal Overload and Overtemp Flags (Visible on I

• LNB Short-Circuit Protection and Diagnostics

• QFN Package

• Pb-free Packaging Available

Applications

• LNB Power Supply and Control for Satellite Set-Top Box

References

• Tech Brief 389 (TB389) - “PCB Land Pattern Design and

Ordering Information

NOTES:

ISL6405EEB

ISL6405EEBZ

(Note 1)

ISL6405ER

ISL6405ERZ

(Note 1)

1. Intersil Pb-free products employ special Pb-free material sets; molding

2. Tape and Reel available. Add “-T” suffix for Tape and Reel Packing Option.

- True Dual Operation for 2-Tuner/2-Dish Applications

- Both Outputs May be Enabled Simultaneously at

- Integrated DC-DC Converter and I

- Boost PWMs with > 92% Efficiency

- Selectable 13V or 18V Outputs

- Digital Cable Length Compensation (1V)

- Registered Slave Address 0001 00XX

- Full 3.3V/5V Operation up to 400kHz

- Available with QFN Package Only

- Facilitates DiSEqC

- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat

- Near Chip-Scale Package Footprint

- Designated with “Z” Suffix (Refer to Note Below)

Surface Mount Guidelines for QFN Packages”; Available

on the Intersil website, www.intersil.com

PART #

compounds/die attach materials and 100% matte tin plate termination

finish, which is 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-020B.

C Compatible Interface for Remote Device Control

Maximum Power

No Leads - Product Outline

July 2004

TEMP. RANGE (

-20 to 85

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

(EUTELSAT) Encoding

28 Ld EPSOIC M28.3B

28 Ld EPSOIC

(Pb-free)

32 Ld 5x5 QFN L32.5x5

32 Ld 5x5 QFN

(Pb-free)

PACKAGE

C Interface

ISL6405

FN9026.2

M28.3B

L32.5x5

PKG. DWG. #

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