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| 型号： | MAX11081GUU/V+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 27/29页 |
| 文件大小： | 0K |
| 描述： | IC FAULT MON BATT 12CH 38TSSOP |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 电池监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 6 V ~ 72 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-TFSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 38-TSSOP |
| 包装： | 带卷 (TR) |
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12-Channel, High-Voltage
Battery-Pack Fault Monitors
Table 4. FMEA Analysis (Note 6) (continued)
PIN
NUMBER
29
30
NAME
TST1
TST2
ACTION
Open (or Disconnected)
Short to Pin 30
Open (or Disconnected)
Short to Pin 31
EFFECT
No effect.
No effect.
No effect.
If pin TOPSEL is set high (V AA ), it causes the short between V AA and AGND.
ALRM L is low.
There is no effect if TOPSEL is set low.
If the part is the topmost device in the daisy chain, the ALRM L is set high as
Open (or Disconnected)
the state of TOPSEL is low (internally pulled down).
There are no other effects as the state of the pin stays the same (both low).
31
TOPSEL
No effect if TOPSEL is set low.
Short to Pin 32
If TOPSEL is set high, it causes the short between V AA and AGND and ALRM L
is low.
32
33
TST3
N.C.
Open (or Disconnected)
Short to Pin 33
Open (or Disconnected)
Short to Pin 34
No effect.
No effect.
No effect.
No effect.
ALRM U is internally pulled up to VDD U . There is no effect to the topmost
device. Otherwise, the communication of the chain is broken and the alarm
Open (or Disconnected)
signal from the parts close to the topmost device are not passed through.
Since ALRM L is a reflection of ALRM U , the state of ALRM L is high for the no-
34
ALRM U
Short to Pin 35
alarm state.
No effect for the topmost device. Otherwise, the communication of the chain is
broken and the alarm signal from the parts close to the topmost are not
passed through. Since ALRM L is a reflection of ALRM U , the state of ALRM L is
low for the no-alarm state.
35
36
37
38
GND U
VDD U
CP-
CP+
Open (or Disconnected)
Short to Pin 36
Open (or Disconnected)
Short to Pin 37
Open (or Disconnected)
Short to Pin 38
Open (or Disconnected)
The ALRM L goes high.
The ALRM L is high. (See Note 9.)
ALRM L goes high. HV is approximately 0.4V below DCIN. (See Note 9.)
ALRM L goes high. VDD U is approximately 0.5V lower than GND U .
(See Note 9.)
ALRM L goes high. VDD U and HV collapse.
ALRM L goes high. VDD U is approximately 0.5V lower than GND U .
(See Note 9.)
ALRM L goes high. VDD U and HV collapse. (See Note 9.)
Note 6:
Note 7:
Note 8:
Note 9:
If the cell voltage is within the monitor range, the heartbeat signal on ALRM L resumes once the fault condition is removed.
The voltage level of high is equal to V AA and low is equal to AGND.
Even if the pin has internal pulldown, the pulldown is very weak and the pin should be tied to AGND for logic 0 setting.
VDD U - GND U = 3.3V and HV - DCIN = 3.6V for the typical configuration. When VDD U and HV collapse, VDD U - GND U ≈ 0V
and HV - DCIN ≈ -0.4V.
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