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LTC2972 Datasheet(PDF) 55 Page - Linear Technology

Part # LTC2972
Description  2-Channel PMBus Power System Manager Featuring Programmable Power Good Outputs
PDF  112 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2972 Datasheet(HTML) 55 Page - Linear Technology

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LTC2972
55
2972fa
For more information www.linear.com/LTC2972
MFR_IOUT_CAL_GAIN_TC Data Contents
BIT(S) SYMBOL
OPERATION
b[15:0] Mfr_iout_cal_gain_tc
16-bit twos complement integer representing the temperature coefficient.
Value = Y where Y = b[15:0] is a twos complement.
Example:
Mfr_iout_cal_gain_tc = 3900ppm
For b[15:0] = 0x0F3C
Value = 3900
EXTERNAL TEMPERATURE COMMANDS AND LIMITS
COMMAND NAME
CMD
CODE DESCRIPTION
TYPE
PAGED FORMAT UNITS EEPROM
DEFAULT
VALUE
REF
PAGE
OT_FAULT_LIMIT
0x4F Overtemperature fault limit setting for
the external temperature sensor.
R/W Word
Y
L11
°C
Y
65.0
0xEA08
56
OT_WARN_LIMIT
0x51 Overtemperature warning limit for the
external temperature sensor
R/W Word
Y
L11
°C
Y
60.0
0xE3C0
56
UT_WARN_LIMIT
0x52 Undertemperature warning limit for
the external temperature sensor.
R/W Word
Y
L11
°C
Y
0
0x8000
56
UT_FAULT_LIMIT
0x53 Undertemperature fault limit for the
external temperature sensor.
R/W Word
Y
L11
°C
Y
–5.0
0xCD80
56
MFR_TEMP_1_GAIN
0xF8 Inverse of external diode temperature
non ideality factor. One LSB = 2–14.
R/W Word
Y
CF
Y
1
0x4000
56
MFR_TEMP_1_OFFSET
0xF9 Offset value for the external
temperature.
R/W Word
Y
L11
°C
Y
0
0x8000
56
MFR_T_SELF_HEAT
0xB8 Calculated temperature rise due to
self-heating of output current sense
device above value measured by
external temperature sensor.
R Word
Y
L11
°C
NA
56
MFR_IOUT_CAL_GAIN_TAU_INV
0xB9 Inverse of time constant for Mfr_t_
self_heat changes scaled by 4 •
tCONV_SENSE.
R/W Word
Y
L11
Y
0.0
0x8000
56
MFR_IOUT_CAL_GAIN_THETA
0xBA Thermal resistance from inductor
core to point measured by external
temperature sensor.
R/W Word
Y
L11
°C/W
Y
0.0
0x8000
56
PMBus COMMAND DESCRIPTION



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