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参数资料
| 型号： | ISL9492ERZ |
| 厂商： | Intersil |
| 文件页数： | 1/21页 |
| 文件大小： | 0K |
| 描述： | IC REG SGL LNB CONTROL 28TQFN |
| 标准包装： | 75 |
| 应用： | 转换器，卫星信号接收机顶盒设计 |
| 输入电压： | 8 V ~ 14 V |
| 输出数： | 1 |
| 输出电压： | 13.5 V ~ 20 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
Single Output LNB Supply and Control Voltage Regulator
with I 2 C Interface for Satellite Set-Top Box Designs
ISL9492
The ISL9492 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 (LNB) of a single antenna port. It also supports
DiSEqC tone generation and modulation with diagnostic status
read-back. Controlling the ISL9492 is simple via the I 2 C bus by
writing 8 bit words onto the System Registers (SR).
The device design makes the total LNB supply design simple,
efficient and compact with low external component count by
integrating Boost power MOSFET, current-mode boost PWM and
a low-noise linear regulator. The current-mode boost converters
provide the linear regulator with input voltage that is set to the
final output voltages, plus typically 0.9V to insure minimum
power dissipation across each linear regulator.
The LNB output voltage can be controlled in two ways; by full control
from I 2 C using the VTOP and VBOT bits or by setting the I 2 C to the
lower range and switching to higher range with the select VTOP pin.
The External modulation input EXTM accepts a modulated DISEqC
command and transfers it symmetrically to the output. The EXTM
pin can be used to modulate the continuous internal tone. The fault
signal serves as an interrupt for the processor when any condition
turns OFF the LNB controller (over-temperature, overcurrent,
disable). The states of these flags to the faults can be thoroughly
examined through the I 2 C registers.
Features
? Single-Chip Power Solution
- Operation for 1-Tuner/1-Dish Applications
- Integrated DC/DC Converter and I 2 C Interface
? Integrated Boost MOSFET
? Switch-Mode Power Converter for Lowest Dissipation
- 490kHz Boost Switching Frequency
- Boost PWMs with > 92% Efficiency
- Selectable 13.5V or 18.5V Outputs
- I 2 C and Pin Controllable Output
? 31V Output Back-Bias Capability
? Built-in Tone Oscillator Factory
- Facilitates DiSEqC (EUTELSAT) Encoding
- Trimmed to 22kHz
- External Modulation Input
? DiSEqC 2.0 Support and Diagnostics
? Internal Overvoltage, Undervoltage, Overcurrent Protection,
Over-Temperature Flags Accessible through the I 2 C Interface
and Fault Signal Status Pin
? Short-Circuit Protection
Applications
? LNB Power Supply and Control for Satellite Set-Top Box
TXT
TDOUT
EXTM
FLT#
CPVOUT
C1
0.047μF
C5
2.2nF
27
28 CPSWOUT
1 CPSWIN
6
VCC
FLT# 21
SCL 17
SDA 16
R1
100k
3.3V
SCL
SDA
C2
1μF
20 LDO_SGND
25 LDO_SGND
ISL9492
DBYP 10
TCAP 22
C4
1μF
C6
0.1μF
C3
1μF
FERRITE
BEAD
5 ABYP
9 PGND
NC 4
DGATE 23
C8
0.22μF
Q1
RL
100
NDS356AP
C9
LNB
VIN
Cp
See pg 14
L1
10μH
C10
100μF
D1
CMS06
Rp
100
C7
100μF
L2
1μH
C11
10μF
C10
0.1μF
0.22μF
L3
220μH
R2
15
POWER
D4
CMS06
FIGURE 1. TYPICAL APPLICATION
March 17, 2011
FN6547.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2011. All Rights Reserved
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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL9492ERZ-T | 功能描述:线性稳压器 - 标准 SING OUTPUT LNB SUPP VAGEG FOR SATELLITE RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| ISL9500CVZ | 功能描述:IC REG CTRLR BUCK PWM CM 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL9500CVZ-T | 功能描述:IC REG CTRLR BUCK PWM CM 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| ISL9501CRZ | 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL9501CRZ-T | 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5 |
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