LTM4676_15 Datasheet, PDF (36/78 Pages) Linear Technology – Dual 13A or Single 26A Module Regulator with Digital Power System Management

LTM4676
Applications Information
PMBus COMMAND
NAME, OR FEATURE
IOUT_CAL_GAIN_n
VOUT_OV_FAULT_
LIMIT_n
VOUT_OV_FAULT_
RESPONSE_n
VOUT_OV_WARN_
LIMIT_n
VOUT_UV_WARN_
LIMIT_n
VOUT_UV_FAULT_
LIMIT_n
VOUT_UV_FAULT_
RESPONSE_n
IOUT_OC_FAULT_
LIMIT_n
IOUT_OC_FAULT_
RESPONSE_n
IOUT_OC_WARN_
LIMIT_n
OT_FAULT_LIMIT_n
OT_FAULT_
RESPONSE_n
OT_WARN_LIMIT_n
UT_FAULT_LIMIT_n
UT_FAULT_
RESPONSE_n
VIN_OV_FAULT_
LIMIT
VIN_OV_FAULT_
RESPONSE_n
VIN_UV_WARN_
LIMIT
CMD CODE COMMAND OR FEATURE
(REGISTER) DESCRIPTION
LTC3880 NVM FACTORY-DEFAULT LTM4676 NVM FACTORY-DEFAULT
VALUE AND/OR ATTRIBUTES
VALUE AND/OR ATTRIBUTES
0x38 The ratio of the voltage at the control 1.8mΩ, read/write, paged, stored in Trimmed at ATE, read-only, stored in
IC’s current-sense pins to the
user-editable NVM.
factory-only NVM.
sensed current, in mΩ, at 25°C.
0x40 Output overvoltage fault limit.
No difference: 0x119A (1.100V), read/write, paged, stored in user-editable
NVM.
0x41 Action to be taken by the device
No difference: 0xB8 (non-latching shutdown; autonomous restart upon fault
when an output overvoltage fault is removal), read/write, paged, stored in user-editable NVM.
detected.
0x42 Output overvoltage warning
threshold.
0x1133 (1.075V), read/write, paged, 0x111F (1.070V), read/write, paged,
stored in user-editable NVM.
stored in user-editable NVM.
0x43 Output undervoltage warning
threshold.
0x0ECD (0.925V), read/write, paged, 0x0EE1 (0.930V), read/write, paged,
stored in user-editable NVM.
stored in user-editable NVM.
0x44 Output undervoltage fault limit.
No difference: 0x0E66 (0.900V), read/write, paged, stored in user-editable
NVM.
0x45 Action to be taken by the device
No difference: 0xB8 (non-latching shutdown; autonomous restart upon fault
when an output undervoltage fault is removal), read/write, paged, stored in user-editable NVM.
detected.
0x46 Output overcurrent fault threshold 0xDBB8 (29.75A), read/write, paged, 0xDADB (22.84A), read/write, paged,
(cycle-by-cycle inductor peak
stored in user-editable NVM.
stored in user-editable NVM.
current).
0x47 Action to be taken by the device
No difference: 0x00 (try to regulate through the fault condition/event; limit
when an output overcurrent fault is the cycle-by-cycle peak of the inductor current to not exceed the commanded
detected.
IOUT_OC_FAULT_LIMIT), read/write, paged, stored in user-editable NVM.
0x4A Output overcurrent warning
0xDA80 (20.00A), read/write, paged, 0xD3E6 (15.59A), read/write, paged,
threshold (time-averaged inductor stored in user-editable NVM.
stored in user-editable NVM.
current).
0x4F Overtemperature fault threshold. 0xEB20 (100°C), read/write, paged, 0xF200 (128°C), read/write, paged,
stored in user-editable NVM.
stored in user-editable NVM.
0x50 Action to be taken by the device
No difference: 0xB8 (non-latching shutdown; autonomous restart upon fault
when an overtemperature fault is removal), read/write, paged, stored in user-editable NVM.
detected via TSNS_na (TSNSn).
0x51 Overtemperature warning threshold. 0xEAA8 (85°C), read/write, paged, 0xEBE8 (125°C), read/write, paged,
stored in user-editable NVM.
stored in user-editable NVM.
0x53 Undertemperature fault threshold. 0xE580 (–40°C), read/write, paged, 0xE530 (–45°C), read/write, paged,
stored in user-editable NVM.
stored in user-editable NVM.
0x54 Response to undertemperature fault 0xB8 (non-latching shutdown;
0x00 (ignore; continue without
events.
autonomous restart upon fault
interruption), read/write, paged,
removal), read/write, paged, stored in stored in user-editable NVM, read/
user-editable NVM.
write, paged, stored in user-editable
NVM.
0x55 Input supply (SV_IN) overvoltage fault 0xD3E0 (15.5V), read/write, non- 0xDB60 (27.0V), read/write, non-
limit.
paged, stored in user-editable NVM. paged, stored in user-editable NVM.
0x56 Response to input overvoltage fault 0x80 (latched-off shutdown), read/ 0xB8 (non-latching shutdown;
events.
write, paged, stored in user-editable autonomous restart upon fault
NVM.
removal), read/write, paged, stored in
user-editable NVM.
0x58 Input undervoltage warning
threshold.
0xCB26 (6.297V), read/write, non- 0xCAA6 (5.297V), read/write, non-
paged, stored in user-editable NVM. paged, stored in user-editable NVM.
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