MAX11080 datasheet(22/27 Pages) MAXIM

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12-Channel, High-Voltage Battery-Pack

Fault Monitor

______________________________________________________________________________________

NUMBER

NAME

ACTION

EFFECT

Open (or Disconnected)

ALRML goes high (see Note 6).

DCIN

Short to Pin 2

ALRML goes high.

Open (or Disconnected)

ALRML goes high.

2HV

Short to Pin 3

No effect.

Open (or Disconnected)

No effect.

3N.C.

Short to Pin 4

No effect.

Open (or Disconnected)

• If open occurs before power-up, the part works as if C12 does not exist

because the internal circuit detects the situation and assumes it is what the

application intended to do. The monitoring of C12 to C11 is disabled and is

not enabled even if the pin is reconnected.

• If open occurs after power-up, it is considered a zero voltage input. ALRML

goes high when the undervoltage is enabled.

C12

Short to Pin 5

• If short occurs before power-up, the part works as if C12 does not exist

because the internal circuit detects the situation and assumes it is what the

application intended to do. The monitoring of C12 to C11 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 C12 to C11. ALRML goes high when the undervoltage is enabled.

Open (or Disconnected)

ALRML goes high because it causes an overvoltage to the affected input pair

even if the overvoltage is set to the maximum.

C11

Short to Pin 6

• If short occurs before power-up, the part works as if C11 does not exist

because the internal circuit detects the situation and assumes it is what the

application intended to do. The monitoring of C11 to C10 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 C11 to C10. ALRML 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.

C10

Short to Pin 7

• If short occurs before power-up, the part works as if C10 does not exist

because the internal circuit detects the situation and assumes it is what the

application intended to do. The monitoring of C10 to C9 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 C10 to C9. ALRML 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.

7C9

Short to Pin 8

• If short occurs before power-up, the part works as if C9 does not exist

because the internal circuit detects the situation and assumes it is what the

application intended to do. The monitoring of C9 to C8 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 C9 to C8. ALRML goes high when the undervoltage is enabled.

Table 4. FEMA Analysis (Note 5)

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