- 您現在的位置：買賣IC網 > PDF目錄44996 > LTC4155IUFD#PBF (LINEAR TECHNOLOGY CORP) POWER SUPPLY SUPPORT CKT, PQCC28 PDF資料下載
參數資料
| 型號： | LTC4155IUFD#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC28 |
| 封裝： | 5 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WXXX-X, QFN-28 |
| 文件頁數： | 17/52頁 |
| 文件大?。?/td> | 473K |
| 代理商： | LTC4155IUFD#PBF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當前第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
LTC4155
24
4155f
Figure 4. Ship-and-Store Mode Required Components
to Enforce Downstream (VOUT) Shutdown
CHGSNS
BATSNS
BATGATE
LTC4155
4155 F04
+
Low Power Ship-and-Store Mode
The LTC4155 can reduce its already low standby current
to approximately 1A in a special mode designed for
shipment and storage. Unlike normal standby mode, in
this mode the external PMOS gate is driven to the battery
voltage to disable FET conduction through the external
PMOS. This mode may be used to cut off all power to
any downstream load on VOUT to maximize battery life
between product manufacture and sale. Note that the bulk
connection inside the external PMOS will provide a con-
ductive path from the battery to VOUT, independent of the
voltage on its gate. To block conduction to VOUT, typically
two PMOS transistors must be connected in series with
either the sources or drains of each device connected in
the center, as shown in Figure 4. If the application does
not require the battery to be isolated from downstream
devices, significant power savings in the LTC4155 may
still be realized by activating this mode.
Ship-and-store mode is armed following the acknowledge
of any data byte written to sub address 0x07 by the I2C
bus master, and activated upon the removal of power to
the USB and WALL inputs, or immediately if no input
power is present when the I2C command is issued. The
contents of the data byte are ignored, but the full byte and
acknowledge clock cycle must be sent.
Once engaged, ship-and-store mode can be disengaged
by applying power to the USB or WALL input or by writ-
ing any full data byte and acknowledge clock cycle to sub
address 0x06 if the I2C bus master is still powered.
I2C Interface
The LTC4155 may communicate with a bus master using
the standard I2C 2-wire interface. The Timing Diagram
shows the relationship of the signals on the bus. The two
bus lines, SDA and SCL, must be HIGH when the bus is
not in use. External pull-up resistors or current sources,
such as the LTC1694 SMBus accelerator, are required
on these lines. The LTC4155 is both a slave receiver and
slave transmitter. The I2C control signals, SDA and SCL,
are scaled internally to the DVCC supply. DVCC should be
connected to the same power supply as the bus pull-up
resistors.
The I2C port has an undervoltage lockout on the DVCC pin.
When DVCC is below approximately 1V, the I2C serial port
is cleared, the LTC4155 is set to its default configuration,
pending interrupts will be cleared, and future interrupts
will be disabled.
Bus Speed
The I2C port is designed to operate at speeds of up to
400kHz. It has built-in timing delays to ensure correct
operation when addressed from an I2C compliant master
device. It also contains input filters designed to suppress
glitches.
START and STOP Conditions
A bus master signals the beginning of communications
by transmitting a START condition. A START condition is
generated by transitioning SDA from HIGH to LOW while
SCL is HIGH. The master may transmit either the slave
write or the slave read address. Once data is written to the
LTC4155,themastermaytransmitaSTOPconditionwhich
commands the LTC4155 to act upon its new command set.
A STOP condition is sent by the master by transitioning
SDA from LOW to HIGH while SCL is HIGH.
OPERATION
相關PDF資料 |
PDF描述 |
|---|---|
| LTC4215CUFD-2 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215IUFD-2#TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215IUFD-2#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215CUFD-2#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215IUFD-2 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC4156EUFD#PBF | 功能描述:IC POWER LI-ION CHARGER 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:* 其它有關文件:STC3100 View All Specifications 特色產品:STC3100 - Battery Monitor IC 標準包裝:4,000 系列:- 功能:燃料，電量檢測計/監(jiān)控器 電池化學: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） 供應商設備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC4156EUFD#TRPBF | 功能描述:IC POWER LI-ION CHARGER 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:* 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| LTC4156IUFD#PBF | 功能描述:IC POWER LI-ION CHARGER 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:* 其它有關文件:STC3100 View All Specifications 特色產品:STC3100 - Battery Monitor IC 標準包裝:4,000 系列:- 功能:燃料，電量檢測計/監(jiān)控器 電池化學: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） 供應商設備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC4156IUFD#TRPBF | 功能描述:IC POWER LI-ION CHARGER 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:* 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR) |
| LTC4160 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Switching Power Manager with USB On-The-Go And Overvoltage Protection |
發(fā)布緊急采購，3分鐘左右您將得到回復。