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LTC3889 Datasheet(PDF) 49 Page - Analog Devices

Part # LTC3889
Description  Dual Loop 8-Phase Step-Down DC/DC Controller with Digital Power System Management
PDF  118 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC3889 Datasheet(HTML) 49 Page - Analog Devices

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LTC3888/LTC3888-1/
LTC3888-2
49
Rev. B
For more information www.analog.com
PMBUS COMMAND SUMMARY
Table 7. PMBus Command Summary
COMMAND NAME
CMD
CODE DESCRIPTION
TYPE
PAGED
DATA
FORMAT UNITS NVM
DEFAULT
VALUE
SEE
PAGE
Commands for Digital Output Voltage Control (See Applications Information or PMBus Command for Details)
VOUT_MODE
0x20 Voltage-related format (Linear) and
exponent.
R Byte
Y
Reg
0x14
2–12
89
VOUT_COMMAND
0x21 Nominal output voltage setpoint for the
LTC3888/3888-2 and LTC3888-1 with
VOUT_SCALE_LOOP defined. Otherwise
nominal VFB.
R/W Word
Y
L16
V
l
400mV
0x0666
89
VOUT_MAX
0x24 Maximum VOUT capability.
R Word
Y
L16
V
1.1V
LTC3888-1
0x119A
3.75V
LTC3888
0x3C00
90
Commands for Digital Output Voltage Control (Continued)
VOUT_MARGIN_HIGH
0x25 Margin high votlage setpoint for the
LTC3888/3888-2 and LTC3888-1 with
VOUT_SCALE_LOOP defined. Otherwise
margin high VFB.
R/W Word
Y
L16
V
l
420mV
0x06B8
90
VOUT_MARGIN_LOW
0x26 Margin low votlage setpoint for the
LTC3888/3888-2 and LTC3888-1 with
VOUT_SCALE_LOOP defined. Otherwise
margin low VFB.
R/W Word
Y
L16
V
l
380mV
0x0614
90
VOUT_SCALE_LOOP
(LTC3888-1)
0x29 Nominal VOUT/ VFB gain provided by
external feedback network.
R/W Word
Y
L11
V/V
l
N/A
90
VOUT_OV_FAULT_LIMIT
0x40 VOUT over voltage fault limit for the
LTC3888/3888-2 and LTC3888-1 with
VOUT_SCALE_LOOP defined. Otherwise
VOUT over voltage VFB.
R/W Word
Y
L16
V
l
440mV
0x070A
90
VOUT_OV_WARN_LIMIT
0x42 VOUT overvoltage warning limit, sensed at
VSENSE±.
R/W Word
Y
L16
V
l
3.6V
0x3981
91
VOUT_UV_WARN_LIMIT
0x43 VOUT undervoltage warning limit, sensed
at VSENSE±.
R/W Word
Y
L16
V
l
0.0V
0x0000
91
VOUT_UV_FAULT_LIMIT
0x44 VOUT under voltage fault limit for the
LTC3888/3888-2 and LTC3888-1 with
VOUT_SCALE_LOOP defined. Otherwise
VOUT under voltage VFB.
R/W Word
Y
L16
V
l
360mV
0x05C3
91
TOFF_MAX_WARN_LIMIT
0x66 Maximum time for VOUT to reach
0.125xVOUT_COMMAND after being
commanded to 0.0V.
R/W Word
Y
L11
ms
l
0ms
0x8000
95
LTC3888/3888-1 Custom Commands
MFR_VOUT_MAX
0xA5 Maximum VOUT_MAX.
R Word
Y
L16
V
3.75V
0x3C00
90
USER_DATA_00
0xB0 EEPROM word reserved for LTpowerPlay.
R/W Word
N
Reg
l
114
USER_DATA_01
0xB1 EEPROM word reserved for LTpowerPlay.
R/W Word
Y
Reg
l
114
USER_DATA_02
0xB2 EEPROM word reserved for OEM use.
R/W Word
N
Reg
l
114
USER_DATA_03
0xB3 EEPROM word available for general data
storage.
R/W Word
Y
Reg
l
0x0000
114
USER_DATA_04
0xB4 EEPROM word available for general data
storage.
R/W Word
N
Reg
l
0x0000
114



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