参数资料
型号: LTC6802IG-1#TRPBF
厂商: Linear Technology
文件页数: 32/38页
文件大小: 0K
描述: IC MONITOR BATT STACK MC 44-SSOP
标准包装: 2,000
功能: 电池监控器
电池化学: 锂离子(Li-Ion)
电源电压: 4 V ~ 50 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)
LTC6802-1
APPLICATIONS INFORMATION
stack potential. Figure 18 shows a means of providing both
of these features. A resistor divider is used to provide a
low-voltage representation of the full stack potential (C12
to C0 voltage) with MOSFETs that decouple the divider
current under unneeded conditions. Other MOSFETs, in
conjunction with an op amp having a shutdown mode,
form a voltage selector that allows measurement of the
normal cell1 potential (when GPIO1 is low) or a buffered
MUX signal. When the MUX is active (GPIO1 is high),
CELL12
2.2M
selection can be made between the reference (4.096V) or
the full-stack voltage divider (GPOI2 set low will select the
reference). During idle time when the LTC6802-1 WTB signal
goes low, the external circuitry goes into a power down
condition, reducing battery drain to a minimum. When not
actively performing measurements, GPIO1 should be set
low and GPIO2 should be set high to achieve the lowest
power state for the configuration shown.
TP0610K
1M
GPIO2
0 = REF_EN
GPIO1
0 = CELL1
V STACK12
WDTB
1M
1M
1M
10M
LT1461A-4
DNC
DNC
V REG
2N7002
V IN
SD
DNC
V OUT
4.096V
LTC6802-1
1μF
2N7002
90.9k
GND
DNC
V ?
C1
150Ω
TP0610K
2.2μF
CELL1
TP0610K TP0610K
V DD CH0 CH1 SEL
100Ω
100nF
SD LT1636
TC4W53FU
COM INH V EE V SS
1M
68021 F18
Figure 18. Providing Measurement of Calibration Reference and Full-Stack Voltage Through CELL1 Port
68021fa
32
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