参数资料
| 型号： | AD8280WASTZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/24页 |
| 文件大小： | 0K |
| 描述： | IC LI-ION BATT MON 48LQFP |
| 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： | 6 V ~ 30 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
| 配用： | AD8280-EVALZ-ND - BOARD EVAL FOR AD8280 |
AD8280
APPLICATIONS INFORMATION
TYPICAL CONNECTIONS
CELL INPUTS
The battery stack of six cells should be connected to VIN0 through
VIN6, with the highest potential connected to VIN6 and the lowest
to VIN0. The connections should be made through a low-pass filter
consisting of a 10 kΩ resistor and a 10 nF capacitor, as shown in
connected to VBOT1, VBOT1S, VBOT2, and VBOT2S as well,
whereas the highest potential should be connected through a
diode to VTOP and VTOPS. It is recommended that decoupling
capacitors of 0.1 μF and 10 μF be used at the VTOP pin.
100nF
TEMPERATURE INPUTS AND THERMISTOR
SELECTION
VT1 and VT2 are voltage inputs and are designed to work with
thermistors that are configured as resistor dividers, as shown
in Figure 45. The voltage at the top of the thermistor divider
should be the +5 V output of the LDO. The LDO pin can source
more current than the REF pin and is better suited to drive the
thermistor dividers.
If a voltage source other than that of the AD8280 LDO is used
to drive the thermistor bridge (V TH ), it is important that the
VT1 and VT2 voltages be brought to 0 V when the AD8280 is
disabled or powered down because the VT1 and VT2 inputs
must be at 0 V when the LDO is also at 0 V.
PART
GROUND
Z1
10μF
0.1μF
VTOP VTOPS AIINOV
AIINUV
AIINOT ENBO TESTO UV OV OT
+
+
+
+
+
+
0.1μF
10k ? 10nF
VCC
VCCS
LDO
LDOS
VIN6
VIN5
VIN4
VIN3
VIN2
VIN1
VIN0
VT1
VT2
AD8280
FB
REF
AVOUTOV
AVOUTUV
AVOUTOT
TOP
BOT
ALRMSEL
DGT2
DGT1
DGT0
UV
REF
OV
REF
0.1μF
OT
REF
2.2μF
VBOT2S
VBOT2
VBOT1S
NPTC
SEL0
SEL1
VBOT1
AIOUTOV AIOUTUV AIOUTOT ENBI
TESTI GND1 GND2
22pF
PART
GROUND
NOTES
1. PART IS CONFIGURED AS FOLLOWS:
MIDDLE PART IN DAISY CHAIN
ALARMS ARE SHARED
DEGLITCH TIME SET TO 0.0 SECONDS
NTC THERMISTOR INPUTS
6 CELL INPUTS
Figure 45. Typical Connections of the AD8280
Rev. C | Page 16 of 24
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