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參數(shù)資料
| 型號： | LTC2941CDCB#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 199K |
| 代理商： | LTC2941CDCB#TRPBF |
LTC2941
11
2941fa
applicaTions inFormaTion
START and STOP Conditions
When the bus is idle, both SCL and SDA must be 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. When the master has nished com-
municating 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. When the
bus is in use, it stays busy if a repeated START (Sr) is
generatedinsteadofaSTOPcondition.TherepeatedSTART
(Sr) conditions are functionally identical to the START (S).
Data Transmission
After a START condition, the I2C bus is considered busy
and data transfer begins between a master and a slave. As
data is transferred over I2C in groups of nine bits (eight
data bits followed by an acknowledge bit), each group
takes nine SCL cycles. The transmitter releases the SDA
line during the acknowledge clock pulse and the receiver
issues an acknowledge (ACK) by pulling SDA LOW or
leaves SDA HIGH to indicate a not-acknowledge (NACK)
condition. Change of data state can only happen while
SCL is LOW.
Write Protocol
The master begins communication with a START condi-
tion followed by the seven bit slave address 1100100
and the R/W bit set to zero, as shown in Figure 5. The
LTC2941 acknowledges this by pulling SDA LOW and
then the master sends a command byte which indicates
which internal register the master is to write. The LTC2941
acknowledges and then latches the command byte into
its internal register address pointer. The master delivers
the data byte, the LTC2941 acknowledges once more and
latches the data into the desired register. The transmission
is ended when the master sends a STOP condition. If the
master continues by sending a second data byte instead
of a STOP, the LTC2941 acknowledges again, increments
its address pointer and latches the second data byte in
the following register, as shown in Figure 6.
Read Protocol
ThemasterbeginsareadoperationwithaSTARTcondition
followed by the seven bit slave address 1100100 and the
R/W bit set to zero, as shown in Figure 7. The LTC2941
acknowledges and then the master sends a command
byte which indicates which internal register the master is
to read. The LTC2941 acknowledges and then latches the
command byte into its internal register address pointer.
The master then sends a repeated START condition fol-
lowed by the same seven bit address with the R/W bit
now set to one. The LTC2941 acknowledges and sends
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, the
LTC2941 increments its address pointer and sends the
contents of the following register, as shown in Figure 8.
SCL
SDA
START
CONDITION
STOP
CONDITION
ADDRESS
R/W
ACK
DATA
ACK
DATA
ACK
1 - 7
8
9
2941 F04
a6 - a0
b7 - b0
1 - 7
8
9
1 - 7
8
9
P
S
Figure 4. Data Transfer Over I2C or SMBus
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| LTC2941IDCB#TRMPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 6DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC2941IDCB#TRPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 6DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC2941IDCB-1#TRMPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 1A 6DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC2941IDCB-1#TRPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 1A 6DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC2942CDCB#PBF | 制造商:Linear Technology 功能描述:IC, BATTERY GAS GAUGE, LI-ION, DFN-6; Battery Management Function:Fuel Gauge; Battery Type:Li-Ion; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Battery IC Case Style:DFN; No. of Pins:6; IC Interface Type:I2C ;RoHS Compliant: Yes |
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