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参数资料
| 型号： | LTC6803IG-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 28/40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
APPLICATIONS INFORMATION
B4
B3
+
+
+
+
+
21
23
25
27
29
C4
C3
C2
C1
V –
MUX
LTC6803-1
100μA
in the value of battery connected between inputs C3 and
C4 (battery B4).
The following algorithm can be used to detect an open
connection to cell pin C n :
1. Issue a STOWAD command (with 100μA sources
connected).
2. Issue a RDCV command and store all cell measurements
into array CELLA( n ).
21
23
+
MUX
25
27
V –
680313 F10
Figure 10. Open Connection
+
C4 LTC6803-1
+
B4 C F4
C3
B3 C F3
C2
+
C1
+
29 100μA
680313 F11
Figure 11. Open Connection with RC Filtering
between C2 and C4 after several cycles of measuring cells
B3 and B4. Thus the measurements for B3 and B4 may
indicate a valid cell voltage when in fact the exact state of
B3 and B4 is unknown.
To reliably detect an open connection, the command
STOWAD is provided. With this command, two 100μA
current sources are connected to the ADC inputs and
turned on during all cell conversions. Referring again to
Figure 11, with the STOWAD command, the C3 pin will be
pulled down by the 100μA current source during the B3
cell measurement and during the B4 cell measurement.
This will tend to decrease the B3 measurement result and
increase the B4 measurement result relative to the normal
STCVAD command. The biggest change is observed in the
B4 measurement when C3 is open. So, the best method to
detect an open wire at input C3 is to look for an increase
3. Issue the 2nd STOWAD command (with 100μA sources
connected).
4. Issue the 2nd RDCV command and store all cell mea-
surements into array CELLB( n ).
5. For battery cells, if CELLA(1) < 0 or CELLB(1) < 0, V –
must be open.
If CELLA(12) < 0 or CELLB(12) < 0, C12 must be open.
For n = 2 to 11, if CELLB( n +1) – CELLA( n +1) > 200mV,
or CELLB(n+1) reaches the full scale of 5.375V, then
C n is open.
The 200mV threshold is chosen to provide tolerance for
measurement errors. For a system with the capacitor con-
nected to C n larger than 0.5μF, repeating step 3 several
times will discharge the external capacitor enough to meet
the criteria.
If the top C pin is open yet V + is still connected, then the
best way to detect an open connection to the top C pin
is by comparing the sum of all cell measurements using
the STCVAD command to an auxiliary measurement of
the sum of all the cells, using a method similar to that
shown in Figure 21. A significantly lower result for the
sum of all 12 cells suggests an open connection to the
top C pin, provided it was already determined that no
other C pin is open.
USING THE S PINS AS DIGITAL OUTPUTS OR
GATE DRIVERS
The S outputs include an internal pull-up PMOS. Therefore
the S pins will behave as a digital output when loaded with
a high impedance, e.g., the gate of an external MOSFET.
For applications requiring high battery discharge currents,
connect a discrete PMOS switch device and suitable
680313fa
28
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| 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) |
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| 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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