Datasheet > ISL6405ERZ

ISL6405ERZ

更新时间： 2024-11-20 22:55:35

品牌	Logo	应用领域
英特矽尔 - INTERSIL		稳压器
页数	文件大小	规格书
13页	340K
描述
Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-top Box Designs

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ISL6405ERZ 数据手册

ISL6405

Data Sheet

July 2004

FN9026.2

Dual Output LNB Supply and Control

Features

• Single Chip Power solution

Voltage Regulator with I C Interface for

Advanced Satellite Set-Top Box Designs

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

- Both Outputs May be Enabled Simultaneously at

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,

Maximum Power

- Integrated DC-DC Converter and I C Interface

• Switch-Mode Power Converter for Lowest Dissipation

- Boost PWMs with > 92% Efficiency

- Selectable 13V or 18V Outputs

- Digital Cable Length Compensation (1V)

modulation and I C device interface. The device makes the

• I C Compatible Interface for Remote Device Control

total LNB supply design simple, efficient and compact with

low external component count.

- Registered Slave Address 0001 00XX

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

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.

• External Pins to Select 13V/18V Options

- Available with QFN Package Only

• Built-In Tone Oscillator Factory Trimmed to 22kHz

- Facilitates DiSEqC_TM(EUTELSAT) Encoding

• Internal Over-Temperature Protection and Diagnostics

• Internal Overload and Overtemp Flags (Visible on I C)

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

• LNB Short-Circuit Protection and Diagnostics

• QFN Package

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

(VSEL1, VSEL2) through the I C bus. Additionally, to

No Leads - Product Outline

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

- Near Chip-Scale Package Footprint

• Pb-free Packaging Available

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

controlled via the I C bus by writing 8 bits on System

and two bits will report the diagnostic status. Separate enable

Applications

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

commands sent on the I C bus provide independent standby

mode control for each PWM and linear combination, disabling

the output into shutdown mode.

References

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

Surface Mount Guidelines for QFN Packages”; Available

on the Intersil website, www.intersil.com

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

Ordering Information

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

input.

PART #

TEMP. RANGE ( C) PACKAGE

PKG. DWG. #

ISL6405EEB

-20 to 85

28 Ld EPSOIC M28.3B

ISL6405EEBZ

(Note 1)

28 Ld EPSOIC M28.3B

(Pb-free)

ISL6405ER

-20 to 85

32 Ld 5x5 QFN L32.5x5

ISL6405ERZ

(Note 1)

32 Ld 5x5 QFN L32.5x5

(Pb-free)

NOTES:

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

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.

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

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

1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc.

12 3 4 5 6 7...13

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ISL6405ERZ 替代型号

型号	品牌	替代类型	描述	数据表
ISL6405ERZ-T	INTERSIL	类似代替	Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satel

与ISL6405ERZ相关器件

型号	品牌	获取价格	描述	数据表
ISL6405ERZ-T	INTERSIL	获取价格	Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satel
ISL6405ERZ-T	RENESAS	获取价格	SWITCHING CONTROLLER, 240kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, LEAD FREE, PLASTIC, MO-
ISL6406	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6406_07	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6406CB	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6406CB-T	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6406CBZ	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6406CBZ-T	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6406CR	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6406CR-T	INTERSIL	获取价格	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

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