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参数资料
| 型号： | A8293SETTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 13/19页 |
| 文件大小： | 0K |
| 描述： | IC REG LNB BOOST/LINEAR 28QFN |
| 标准包装： | 9,000 |
| 应用： | 转换器，模拟和数字式卫星信号 STB 接收器/SatTV |
| 输入电压： | 9 V ~ 16 V |
| 输出数： | 1 |
| 输出电压： | 可调 |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VFQFN |
| 供应商设备封装： | 28-QFN |
| 包装： | 带卷 (TR) |
A8293
Single LNB Supply and Control Voltage Regulator
Status Registers (I 2 C?-Compatible Read Register)
The main fault conditions: overcurrent (OCP), undervoltage
(VUV) and overtemperature (TSD), are all indicated by setting
the relevant bits in the Status registers. In all fault cases, once the
bit is set, it remains latched until the A8293 is read by the I 2 C?
master, assuming the fault has been resolved.
The current status of the LNB output is indicated by the dis-
able bit, DIS. The DIS bit is set when either a fault occurs or if
the LNB is disabled intentionally. This bit is latched, and is reset
when the LNB is commanded on again. The power not good
(PNG) is the only bit which may be reset without an I 2 C? read
sequence. Table 4 summarizes the condition of each bit when set
and how it is reset.
Table 4. Status Register Bit Setting
As the A8293 has a comprehensive set of status reporting bits,
it is necessary to have two Status registers. When performing a
multiple read function, register 1 is read followed by register 2,
then register 1 again and so on. Whenever a new read function is
performed, register 1 is always read first.
The normal sequence of the master in a fault condition will be
to detect the fault by reading the Status registers, then rereading
the Status registers until the status bit is reset indicating the fault
condition is reset. The fault may be detected either by continuously
polling, by responding to an interrupt request (IRQ), or by detect-
ing a fault condition externally and performing a diagnostic poll of
all slave devices. Note that the fully-operational condition of the
Status registers is all 0s, to simplify checking of the Status bit.
Status Bit
–
DIS
OCP
PNG
–
TSD
VUV
Function
Not used
LNB disabled, either intentionally or
due to fault
Overcurrent
Power not good
Not used
Thermal shutdown
Undervoltage
Set
–
Latched
Latched
Non-latched
–
Latched
Latched
Reset
Condition
Not used
LNB enabled and no fault
I 2 C? read and fault removed
LNB volts in range
Not used
I 2 C? read and fault removed
I 2 C? read and fault removed
Allegro MicroSystems, LLC
115 Northeast Cutoff
13
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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相关代理商/技术参数 |
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| A8294 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Single LNB Supply and Control Voltage Regulator |
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| A8296SESTR-T | 功能描述:IC REG LNB SGL SUPPLY 16-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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