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参数资料
| 型号： | LTC4280IUFD |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| 封装： | 4 X 5 MM, PLASTIC, MO-220, QFN-24 |
| 文件页数： | 14/28页 |
| 文件大小： | 286K |
| 代理商： | LTC4280IUFD |
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LTC4280
21
4280f
APPLICATIONS INFORMATION
remains LOW during this pulse to acknowledge receipt
of the data. If the slave fails to acknowledge by leaving
SDA high, then the master may abort the transmission by
generating a STOP condition. When the master is receiving
data from the slave, the master pulls down the SDA line
during the clock pulse to indicate receipt of the data. After
the last byte has been received the master leaves the SDA
line HIGH (not acknowledge) and issues a stop condition
to terminate the transmission.
Write Protocol
The master begins communication with a START condition
followed by the seven bit slave address and the R/W bit
set to zero, as shown in Figure 7. The addressed LTC4280
acknowledges this and then the master sends a command
byte which indicates which internal register the master
wishes to write. The LTC4280 acknowledges this and
then latches the lower three bits of the command byte
into its internal Register Address pointer. The master then
delivers the data byte and the LTC4280 acknowledges
once more and latches the data into its control register.
The transmission is ended when the master sends a STOP
condition. If the master continues sending a second data
byte, as in a Write Word command, the second data byte
is acknowledged by the LTC4280 but ignored, as shown
in Figure 8.
Read Protocol
The master begins a read operation with a START condition
followed by the seven bit slave address and the R/W bit
set to zero, as shown in Figure 9. The addressed LTC4280
acknowledges this and then the master sends a command
byte which indicates which internal register the master
wishes to read. The LTC4280 acknowledges this and then
latches the lower three bits of the command byte into its
internal Register Address pointer. The master then sends
a repeated START condition followed by the same seven
bit address with the R/W bit now set to one. The LTC4280
acknowledges and send the contents of the requested
register. The transmission is ended when the master
sends a STOP condition. If the master acknowledges
the transmitted data byte, as in a Read Word command,
Figure 10, the LTC4280 repeats the requested register as
the second data byte.
Alert Response Protocol
When any of the fault bits in FAULT register D are set, an
optional bus alert is generated if the appropriate bit in
the ALERT register B is also set. If an alert is enabled, the
corresponding fault causes the ALERT pin to pull low. After
the bus master controller broadcasts the Alert Response
Address, the LTC4280 responds with its address on the
SDA line and then release ALERT as shown in Figure 11.
The ALERT line is also released if the device is addressed
by the bus master. The ALERT signal is not pulled low
again until the FAULT register indicates a different fault
has occurred or the original fault is cleared and it occurs
again. Note that this means repeated or continuing faults
do not generate alerts until the associated FAULT register
bit has been cleared.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4280IUFD#PBF | 功能描述:IC HOT SWAP CONTROLLER 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4280IUFD#TRPBF | 功能描述:IC CTLR HOT SWAP I2C MON 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| LTC4280IUFD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Hot Swap Controller with I2C Compatible Monitoring |
| LTC4280IUFD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Hot Swap Controller with I2C Compatible Monitoring |
| LTC4280IUFD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Hot Swap Controller with I2C Compatible Monitoring |
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