MAX11080 Datasheet, PDF (24/27 Pages) Maxim Integrated Products – 12-Channel, High-Voltage Battery-Pack Fault Monitor

12-Channel, High-Voltage Battery-Pack
Fault Monitor
Table 4. FEMA Analysis (Note 5) (continued)
PIN
NUMBER
13
14
15
16
17
18
19
NAME
ACTION
EFFECT
C3
C2
C1
C0
UVSEL0
UVSEL1
UVSEL2
Open (or Disconnected)
ALRM_L goes high as it causes an overvoltage to the affected input pair even if
the overvoltage is set to the maximum.
Short to Pin 14
• If short occurs before power-up, the part works as if C3 does not exist
because the internal circuit detects the situation and assumes it is what the
application intended to do. The monitoring of C3 to C2 is disabled and is not
enabled even if the short is removed.
• If short occurs after power-up, the situation is treated as a zero voltage input
for C5 to C4. ALRM_L goes high when the undervoltage is enabled.
Open (or Disconnected) ^{ALRML goes high as it causes an overvoltage to the affected input pair even if}
the overvoltage is set to the maximum.
Short to Pin 15
• If short occurs before power-up, the part works as if C2 does not exist
because the internal circuit detects the situation and assumes it is what the
application intended to do. The monitoring of C2 to C1 is disabled and is not
enabled even if the short is removed.
• If short occurs after power-up, the situation is treated as a zero voltage input
for C2 to C1. ALRM_L goes high when the undervoltage is enabled.
Open (or Disconnected) ^{ALRML goes high as it causes an overvoltage to the affected input pair even if}
the overvoltage is set to the maximum.
Short to Pin 16
ALRM_L goes high irrespective of whether undervoltage is enabled/disabled
and before and after power-up.
Open (or Disconnected)
ALRM_L goes high irrespective of whether undervoltage is enabled/disabled
and before and after power-up.
Short to Pin 17
• ALRM_L goes high if pin 17 is pulled high by V_AA. The part consumes a large
current as V_AA is shorted to AGND (connected to C0).
• If pin 17 is tied to AGND, there is no effect.
Open (or Disconnected)
The pin defaults to low due to the internal pulldown (see Note 7). The effect
depends on the intended undervoltage setting.
Short to Pin 18
Open (or Disconnected)
• If pin 17 and pin 18 have the same intended value, there is no effect for the
short.
• If pin 17 and pin 18 have a different setting, the V_AA is shorted to AGND.
ALRM_L goes low.
The pin defaults to low due to the internal pulldown (see Note 7). The effect
depends on the intended undervoltage setting.
Short to Pin 19
Open (or Disconnected)
• If pin 18 and pin 19 have the same intended value, there is no effect for the
short.
• If pin 18 and pin 19 have a different setting, the V_AA is shorted to AGND.
ALRM_L goes low.
The pin defaults to low due to the internal pulldown (see Note 7). The effect
depends on the intended undervoltage setting.
Short to Pin 20
• If pin 19 and pin 20 have the same intended value, there is no effect for the
short.
• If pin 19 and pin 20 have the different setting, the V_AA is shorted to. AGND
ALRM_L goes low.
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