MAX34440ETL+ Maxim Integrated Products, MAX34440ETL+ Datasheet - Page 33

• Manufacturer Part Number: MAX34440ETL+
• Description: Supervisory Circuits PMBUS 6-CH POW SUPPLY MANAGER
• Manufacturer: Maxim Integrated Products

Specifications of MAX34440ETL+

• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Supply Current (typ): 2.5 mA
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Package / Case: TQFN-40
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The STATUS_VOUT command returns 1 byte of information with contents as described in Table 18.
The STATUS_CML command returns 1 byte of information with contents as described in Table 19.
The STATUS_MFR_SPECIFIC command returns 1 byte of information with a summary of the reason for a fault. The
STATUS_MFR_SPECIFIC message content is described in Table 20.
Table 19. STATUS_CML
Table 20. STATUS_MFR_SPECIFIC
Note: The settings of the OFF and POWER_GOOD# bits do not assert the ALERT signal.
Table 18. STATUS_VOUT
BIT
BIT
BIT
5:1
1:0
7
6
0
7
6
5
4
3
2
7
6
5
4
3
2
1
0
FAULT_LOG_FULL
TON_MAX_FAULT
VOUT_OV_FAULT
VOUT_OV_WARN
VOUT_UV_WARN
VOUT_UV_FAULT
POWER_GOOD#
MARGIN_FAULT
COMM_FAULT
DATA_FAULT
WATCHDOG
BIT NAME
OC_FAULT
OC_WARN
PMBus 6-Channel Power-Supply Manager
BIT NAME
BIT NAME
OT_WARN
OT_FAULT
OFF
0
0
0
An invalid or unsupported command has been received.
An invalid or unsupported data has been received.
These bits always return a 0.
MFR_NV_FAULT_LOG is full and needs to be cleared.
VOUT overvoltage fault.
VOUT overvoltage warning.
VOUT undervoltage warning.
VOUT undervoltage fault.
This bit always returns a 0.
TON maximum fault.
These bits always return a 0.
This bit is set if the power supply is off (due to either a fault or sequencing delay; this bit is
not set if the power supply is disabled).
Overtemperature warning.
Overtemperature fault.
A watchdog reset has occurred.
This bit is set if the device cannot properly close-loop margin the power supply.
Power-supply voltage has fallen from POWER_GOOD_ON to less than POWER_GOOD_OFF.
IOUT overcurrent fault.
IOUT overcurrent warning.
MEANING
MEANING
MEANING
STATUS_MFR_SPECIFIC (80h)
STATUS_VOUT (7Ah)
STATUS_CML (7Eh)
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