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參數資料
| 型號： | LTC4280CUFD#PBF |
| 廠商： | Linear Technology |
| 文件頁數： | 20/28頁 |
| 文件大小： | 291K |
| 描述： | IC CONTROLLER HOT SWAP QFN-24 |
| 標準包裝： | 73 |
| 類型： | 熱交換控制器 |
| 應用： | 通用 |
| 內部開關： | 無 |
| 電源電壓： | 2.9 V ~ 15 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-WFQFN 裸露焊盤 |
| 供應商設備封裝： | 24-QFN（5x4） |
| 包裝： | 管件 |
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LTC4280
20
4280f
APPLICATIONS INFORMATION
SCL
SDA
START
CONDITION
STOP
CONDITION
ADDRESS
R/W
ACK
DATA
ACK
DATA
ACK
1 - 7
8
9
4280 F06
a6 - a0
b7 - b0
b7 - b0
1 - 7
8
9
1 - 7
8
9
P
S
Figure 6. Data Transfer Over I
2
C or SMBus
Digital Interface
The LTC4280 communicates with a bus master using a
2-wire interface compatible with I
2
C Bus and SMBus, an
I
2
C extension for low power devices.
The LTC4280 is a read-write slave device and supports
SMBus bus Read Byte, Write Byte, Read Word and Write
Word commands. The second word in a Read Word
command is identical to the rst word. The second word
in a Write Word command is ignored. Data formats for
these commands are shown in Figures 6 to 11.
START and STOP Conditions
When the bus is idle, both SCL and SDA are high. A bus
master signals the beginning of a transmission with a start
condition by transitioning SDA from high to low while SCL
is high, as shown in Figure 6. When the master has nished
communicating with the slave, it issues a STOP condition
by transitioning SDA from low to high while SCL is high.
The bus is then free for another transmission.
I
2
C Device Addressing
Twenty-seven distinct bus addresses are available using
three 3-state address pins, ADR0-ADR2. Table 1 shows
the correspondence between pin states and addresses.
Note that address bits B7 and B6 are internally con gured
to 10. In addition, the LTC4280 responds to two special
addresses. Address (1011 111) is a mass write address
that writes to all LTC4280s, regardless of their individual
address settings. Mass write can be disabled by setting
register A4 to zero. Address (0001 100) is the SMBus Alert
Response Address. If the LTC4280 is pulling low on the
ALERT pin, it acknowledges this address by broadcasting
its address and releasing the ALERT pin.
Acknowledge
The acknowledge signal is used in handshaking between
transmitter and receiver to indicate that the last byte of
data was received. The transmitter always releases the
SDA line during the acknowledge clock pulse. When the
slave is the receiver, it pulls down the SDA line so that it
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC4280CUFD-TR | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Hot Swap Controller with I2C Compatible Monitoring |
| LTC4280CUFD-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Hot Swap Controller with I2C Compatible Monitoring |
| LTC4280IUFD | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Hot Swap Controller with I2C Compatible Monitoring |
| LTC4280IUFD#PBF | 功能描述:IC HOT SWAP CONTROLLER 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應用:通用型，PCI Express? 內部開關:無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應商設備封裝:80-TQFP（12x12） 包裝:托盤 產品目錄頁面:1423 (CN2011-ZH PDF) |
| LTC4280IUFD#TRPBF | 功能描述:IC CTLR HOT SWAP I2C MON 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應用:通用型，PCI Express? 內部開關:無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應商設備封裝:80-TQFP（12x12） 包裝:托盤 產品目錄頁面:1423 (CN2011-ZH PDF) |
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