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参数资料
| 型号： | LTC6803IG-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/40页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR BATT STACK 44-SSOP |
| 标准包装： | 2,000 |
| 功能： | 电池监控器，过压/欠压保护 |
| 电池化学： | 多化学成分，超级电容器 |
| 电源电压： | 4 V ~ 55 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-FSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 44-SSOP |
| 包装： | 带卷 (TR) |
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LTC6803-1/LTC6803-3
TIMING DIAGRAM
Timing Diagram of the Serial Interface
t 1
t 2
t 4
t 3
t 6
t 7
SCKI
SDI
D3
D2
D1
D0
D7···D4
D3
t 5
CSBI
t 8
SDO
D4
D3
D2
D1
D0
D7···D4
D3
OPERATION
PREVIOUS
COMMAND
CURRENT
COMMAND
680313 TD
THEORY OF OPERATION
The LTC6803 is a data acquisition IC capable of mea-
suring the voltage of 12 series connected battery cells.
An input multiplexer connects the batteries to a 12-bit
delta-sigma analog-to-digital converter (ADC). An internal
8ppm/°C voltage reference combined with the ADC give
the LTC6803 its outstanding measurement accuracy. The
inherent benefits of the delta-sigma ADC versus other types
of ADCs (e.g., successive approximation) are explained
in Advantages of Delta-Sigma ADCs in the Applications
Information section.
Communication between the LTC6803 and a host processor
is handled by an SPI compatible serial interface. As shown
in Figure 1, the LTC6803-1s or LTC6803-3s can pass data
up and down a stack of devices using simple diodes for
isolation. This operation is described in Serial Port in the
Applications Information section.
The LTC6803 also contains circuitry to balance cell voltages.
Internal MOSFETs can be used to discharge cells. These
internal MOSFETs can also be used to control external
balancing circuits. Figure 1 illustrates cell balancing by
internal discharge. Figure 12 shows the S pin controlling
an external balancing circuit. It is important to note that
the LTC6803 makes no decisions about turning on/off
the internal MOSFETs. This is completely controlled by
the host processor. The host processor writes values to
a configuration register inside the LTC6803 to control the
switches. The watchdog timer inside the LTC6803 will turn
off the discharge switches if communication with the host
processor is interrupted.
The LTC6803 has three modes of operation: hardware
shutdown, standby and measure. Hardware shutdown is
a true zero power mode. Standby mode is a power saving
state where all circuits except the serial interface are turned
off. In measure mode, the LTC6803 is used to measure
cell voltages and store the results in memory. Measure
mode will also monitor each cell voltage for overvoltage
(OV) and undervoltage (UV) conditions.
HARDWARE SHUTDOWN MODE
The V + pin can be disconnected from the C pins and the
battery pack. If the V + supply pin is 0V, the LTC6803 will
typically draw less than 1nA from the battery cells. All
circuits inside the IC are off. It is not possible to com-
municate with the IC when V + = 0V. See the Applications
Information section for hardware shutdown circuits.
STANDBY MODE
The LTC6803 defaults (powers up) to standby mode.
Standby mode is the lowest supply current state with
a supply connected. Standby current is typically 12μA
680313fa
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC6803IG-2#PBF | 功能描述:IC MONITOR BATT STACK 44-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LTC6803IG-2#TRPBF | 功能描述:IC MONITOR BATT STACK 44-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC6803IG-2PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Multicell Battery Stack Monitor |
| LTC6803IG-3#3ZZPBF | 制造商:Linear Technology 功能描述:Battery Monitoring Li-Ion 44-Pin SSOP |
| LTC6803IG-3#3ZZTRPBF | 制造商:Linear Technology 功能描述:Battery Monitoring Li-Ion 44-Pin SSOP T/R |
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