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参数资料
| 型号： | A8291SETTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | IC VOLTAGE REG SGL LNB 28-QFN |
| 标准包装： | 9,000 |
| 应用： | 转换器，模拟和数字式卫星信号接收器 |
| 输入电压： | 8 V ~ 16 V |
| 输出数： | 1 |
| 输出电压： | 12.7 V ~ 20.4 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN/MLP 裸露焊盘（5x5） |
| 包装： | 带卷 (TR) |
A8291
Single LNB Supply and Control Voltage Regulator
Control Registers (I 2 C?-Compatible Write Register)
All main functions of the A8291 are controlled through the I 2 C?-
compatible interface via the 8-bit Control registers. As the A8291
contains numerous control options, it is necessary to have two
control registers. Each register contains up to 6 bits of data (bit
0 to bit 5), followed by 2 bits for the register address (bit 6 and
bit 7). The power-up states for the control functions are all 0s.
The following tables define the control bits for each address
and the settings for output voltage:
Table 2. Control Register Address (I1, I0) = 00
Bit
0
1
2
3
4
5
6
7
Name
VSEL0
VSEL1
VSEL2
VSEL3
ODT
ENB
I0
I1
Function
See table 4, Output Voltage Amplitude Selection
0: LNB = Low range
1: LNB = High range
1 (recommended): The ODT functions are always
enabled, but setting 1 recommended at all times.
0: Disable LNB Output
1: Enable LNB Output
Address Bit: 0
Address Bit: 0
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
VSEL0
VSEL1
VSEL2
VSEL3
ODT
ENB
I0
I1
These three bits provide incremental control over the voltage on the LNB output.
The available voltages provide the necessary levels for all the common standards
plus the ability to add line compensation in increments of 333 mV. The voltage
levels are defined in table 4, Output Voltage Amplitude Selection.
Switches between the low level and high level output voltages on the LNB output.
0 selects the low level voltage and 1 selects the high level. The low-level center voltage
is 12.709 V nominal and the high level is 18.042 V nominal. These may be increased
in steps of 333 mV using the VSEL2, VSEL1 and VSEL0 control register bits.
The overcurrent disable timer is always enabled.
Enables the LNB output. When set to 1 the LNB output is switched on. When set to
0, the LNB output is disabled.
Address
Address
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
11
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A8291SETTR-TB | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Single LNB Supply and Control Voltage Regulator |
| A8292 | 制造商:AMPEX 功能描述: |
| A8292SETTR-T | 功能描述:IC REG LNB SUPPLY/CONTROL 28-MLP 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) |
| A8293 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Single LNB Supply and Control Voltage Regulator |
| A8293SESTR-T | 功能描述:IC REG LNB BOOST/LINEAR 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
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