參數(shù)資料
型號： LTC3880EUJ-1#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 6 X 6 MM, LEAD FREE, PLASTIC, WJJD-2, QFN-40
文件頁數(shù)： 81/112頁
文件大?。?/td> 2182K
代理商： LTC3880EUJ-1#PBF
LTC3880/LTC3880-1
70
3880fa
PMBus COMMAND DETAILS
Output Voltage and Limits
COMMAND NAME
CMD CODE DESCRIPTION
TYPE
PAGED
DATA
FORMAT UNITS NVM
DEFAULT
VALUE
VOUT_MODE
0x20
Output voltage format and exponent (2–12).
R Byte
Y
Reg
2–2
0x14
VOUT_MAX
0x24
Upper limit on the output voltage the unit can
command regardless of any other commands.
R/W Word
Y
L16
V
Y
4.096 Ch0
0x4189
5.5 Ch1
0x5800
VOUT_OV_FAULT_ LIMIT
0x40
Output overvoltage fault limit.
R/W Word
Y
L16
V
Y
1.1
0x119A
VOUT_OV_WARN_ LIMIT
0x42
Output overvoltage warning limit.
R/W Word
Y
L16
V
Y
1.075
0x1133
VOUT_MARGIN_HIGH
0x25
Margin high output voltage set point. Must be
greater than VOUT_COMMAND.
R/W Word
Y
L16
V
Y
1.05
0x10CD
VOUT_COMMAND
0x21
Nominal output voltage set point.
R/W Word
Y
L16
V
Y
1.0
0x1000
VOUT_MARGIN_LOW
0x26
Margin low output voltage set point. Must be
less than VOUT_COMMAND.
R/W Word
Y
L16
V
Y
0.95
0x0F33
VOUT_UV_WARN_ LIMIT
0x43
Output undervoltage warning limit.
R/W Word
Y
L16
V
Y
0.925
0x0ECD
VOUT_UV_FAULT_ LIMIT
0x44
Output undervoltage fault limit.
R/W Word
Y
L16
V
Y
0.9
0x0E66
POWER_GOOD_ON
0x5E
Output voltage at or above which a power
good should be asserted.
R/W Word
Y
L16
V
Y
0.93
0x0EE1
POWER_GOOD_OFF
0x5F
Output voltage at or below which a power
good should be de-asserted.
R/W Word
Y
L16
V
Y
0.92
0x0EB8
MFR_VOUT_MAX
0xA5
Maximum allowed output voltage.
R Word
Y
L16
V
4.096 Ch0
5.5 Ch1
VOUT_MODE
The data byte for VOUT_MODE command, used for commanding and reading output voltage, consists of a 3-bit mode
(only linear format is supported) and a 5-bit parameter representing the exponent used in output voltage Read/Write
commands.
This read-only command has one data byte
VOUT_MAX
The VOUT_MAX command sets an upper limit on the output voltage, in volts, the unit can command regardless of any
other commands or combinations.
This command has two data bytes and is formatted in Linear_16u format.
VOUT_OV_FAULT_LIMIT
The VOUT_OV_FAULT_LIMIT command sets the value of the output voltage measured at the sense pins, in volts, which
causes an output overvoltage fault.
If the VOUT_OV_FAULT_LIMIT is modified and the switcher is active, allow 10ms after the command is modified to
assure the new value is being honored. The part indicates if it is busy making a calculation. Monitor bits 5 and 6 of
MFR_COMMON. Either bit is low if the part is busy. If this wait time is not met, and the VOUT_COMMAND is modified
above the old overvoltage limit, an OV condition might temporarily be detected resulting in undesirable behavior and
possible damage to the switcher.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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