ltc2978 Linear Technology Corporation, ltc2978 Datasheet - Page 19

• Manufacturer Part Number: ltc2978
• Description: Octal Pmbus Power Supply Monitor And Controller With Eeprom
• Manufacturer: Linear Technology Corporation

Summary
COMMAND FUNCTION
VOUT_UV_FAULT_LIMIT
VOUT_UV_FAULT_RESPONSE
OT_FAULT_LIMIT
OT_FAULT_RESPONSE
OT_WARN_LIMIT
UT_WARN_LIMIT
UT_FAULT_LIMIT
UT_FAULT_RESPONSE
VIN_OV_FAULT_LIMIT
VIN_OV_FAULT_RESPONSE
VIN_OV_WARN_LIMIT
VIN_UV_WARN_LIMIT
VIN_UV_FAULT_LIMIT
VIN_UV_FAULT_RESPONSE
POWER_GOOD_ON
POWER_GOOD_OFF
TON_DELAY
TON_RISE
TON_MAX_FAULT_LIMIT
TON_MAX_FAULT_RESPONSE
operaTion
DESCRIPTION
Undervoltage DC/DC converter fault limit
setting. This limit is also used to determine
if Ton_max_fault has been met and the
unit is on.
The VOUT_UV_FAULT_RESPONSE
command instructs the device on
what action to take in response to an
undervoltage fault.
Overtemperature fault limit setting.
The OT_FAULT_RESPONSE command
instructs the device on what action to take
in response to an overtemperature fault.
Overtemperature warning limit setting.
Undertemperature warn limit setting.
Undertemperature fault limit setting.
The UT_FAULT_RESPONSE command
instructs the device on what action to take
in response to an undertemperature fault.
Input supply overvoltage fault limit setting.
The VIN_OV_FAULT_RESPONSE command
instructs the device on what action to take
in response to an input overvoltage fault.
Overvoltage input supply warning limit
setting.
Undervoltage input supply warning limit
setting.
Undervoltage input supply fault limit
setting.
The VIN_UV_FAULT_RESPONSE command
instructs the device on what action to take
in response to an input undervoltage fault.
Output voltage at or above which a power
good should be asserted.
Output voltage at or below which a power
good should be deasserted.
Time, in ms, from CONTROL and/or
Operation on to V
Time, in ms, from when the output starts
to rise until the LTC2978 optionally soft-
connects its voltage-buffered current DAC
and begins to servo the output voltage to
the desired value.
Maximum time, in ms, from V
on assertion that an UV condition will
be tolerated before a TON_MAX_FAULT
condition results.
Specifies response to a TON_MAX_FAULT
event.
OUT_EN
on.
OUT_EN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LENGTH
(BITS)
DATA
16
16
16
16
16
16
16
16
16
16
16
16
16
16
8
8
8
8
8
8
BYTE VALUE
COMMAND
‘h44
‘h45
‘h50
‘h51
‘h52
‘h53
‘h54
‘h55
‘h56
‘h57
‘h58
‘h59
‘h5A
‘h5E
‘h60
‘h61
‘h62
‘h63
‘h4F
‘h5F
MEMORY
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
TYPE
NV
LTC2978
DEFAULT
‘h1CCD
‘hEAA8
‘hEA58
‘hCD80
‘hD3C0
‘hD380
‘h1EB8
‘hBA00
‘hD280
‘hD3C0
VALUE
‘h8000
‘h8000
‘h8000
‘h1E14
‘hB8
‘hB8
‘hB8
‘h7F
‘h80
‘h00

PAGED
N
N
N
N
N
N
N
N
N
N
N
N
?
Y
Y
Y
Y
Y
Y
Y
Y
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