参数资料
| 型号： | ISL9491ERZ |
| 厂商： | Intersil |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG SGL LNB CONTROL 16QFN |
| 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： | 13.3 V ~ 20 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（4x4） |
| 包装： | 管件 |
Single Output LNB Supply Voltage Regulator for
Satellite Set-Top Box Applications
ISL9491, ISL9491A
These devices are designed for supplying power and
control signals from advanced satellite set-top box (STB)
modules to the low noise blocks (LNBs) of single antenna
ports. Each device consists of a current-mode boost
converter and a low-noise linear regulator along with the
circuitry required for tone injection and pin controllable
interface. The device makes the total LNB supply design
simple, efficient and compact with low external
component count.
The current-mode boost converters provide the linear
regulator with input voltage that is set to the voltage at
the VOUT pin plus a minimal drop to insure minimum
power dissipation across the internal LDO. This maintains
constant voltage drop across the linear pass element
while permitting adequate voltage range for tone
injection.
The final regulated output voltage is available at the
cathode of the back diode to support the operation of an
antenna port for a single tuner. The outputs can be set to
various voltage level for the desired polarization
reception by means of the logic presented to the VSET0
and VSET1 pins. An EN pin is to be driven high to enable
the outputs for the PWM and linear combination; setting
EN low disables the output, forcing a shutdown mode.
The external modulation input (EXTM) can accept a tone
modulated DiSEqC command and transfer it
symmetrically to the output to meet DiSEqC 1.x protocol.
An external DiSEqC tank circuit can also be implemented
Features
? Single Chip Power Solution
- Operation for 1-Tuner/1-Dish Applications
? Switch-Mode Power Converter for Lowest Dissipation
- Boost PWMs with >92% Efficiency
- Pin Controllable Enable and Output
? 2.5V/3.3V/5V Logic Compatible
? FAULT Signal
? DIRECTV SWM Compliant
? VSET Pin to Toggle between Vertical and Horizontal
Polarizations
? External Tone Input
? Internal Overcurrent and Over-Temperature
Protection
? Pb-Free (ROHs Compliant)
Applications
? LNB Power Supply and Control for Satellite Set-Top
Box
Pin Configuration
ISL9491, ISL9491A
(16 LD QFN)
TOP VIEW
to support DiSEqC 2.x.
Ordering Information
VCC
1
16
15
14
13
12 ILIMIT
PART
NUMBER
(Note)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
CS
PGND
2
3
11 TCAP
10 VSET1
ISL9491ERZ*
94 91ERZ
-20 to +85 16 Ld QFN
L16.4x4
GATE
4
9
VSET0
ISL9491AERZ* 94 91AERZ
-20 to +85 16 Ld QFN
L16.4x4
5
6
7
8
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3
termination finish, which is RoHS compliant and 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-020.
October 13, 2009
FN6531.0
1
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 registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
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 |
|---|---|
| ISL9491ERZ-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 |
| ISL9492ERZ | 功能描述:IC REG SGL LNB CONTROL 28TQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:2,000 系列:- 应用:控制器，DSP 输入电压:4.5 V ~ 25 V 输出数:2 输出电压:最低可调至 1.2V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:30-TFSOP（0.173"，4.40mm 宽） 供应商设备封装:30-TSSOP 包装:带卷 (TR) |
| 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 |
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