参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 35/112页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 40-QFN
软件下载: LTpowerPlay™
标准包装: 61
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 1MHz
电源电压: 4.5 V ~ 24 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 105°C
封装/外壳: 40-WFQFN 裸露焊盘
包装: 管件
LTC3880/LTC3880-1
PMBus COMMAND SUMMARY
COMMAND NAME
CMD
CODE DESCRIPTION
TYPE
DATA
PAGED FORMAT UNITS NVM
DEFAULT
VALUE PAGE
MFR_FAULT_LOG_CLEAR
0xEC Initialize the EEPROM block reserved for fault
logging and clear any previous fault logging
locks.
Send Byte
N
NA
MFR_READ_IIN
MFR_FAULT_LOG
MFR_COMMON
0xED Measured input current per channel
0xEE Fault log data bytes. This sequentially retrieved
data is used to assemble a complete fault log.
0xEF Manufacturer status bits that are common across
multiple LTC chips.
R Word
R Block
R Byte
Y
N
N
L11
Reg
Reg
A
Y
NA
NA
NA
96
99
95
MFR_COMPARE_USER_
ALL
0xF0 Compares current command contents with NVM. Send Byte
N
NA
98
MFR_TEMPERATURE_2_
PEAK
MFR_PWM_CONFIG_
LTC3880
0xF4 Peak internal die temperature since last MFR_
CLEAR_PEAKS.
0xF5 Set numerous parameters for the DC/DC
controller including phasing.
R Word
R/W Byte
N
N
L11
Reg
C
Y
NA
0x10
97
MFR_IOUT_CAL_GAIN_TC 0xF6 Temperature coefficient of the current sensing
element.
R/W Word
Y
CF
Y
3900
0x0F3C
MFR_TEMP_1_GAIN
0xF8 Sets the slope of the external temperature sensor. R/W Word
Y
CF
Y
1.0
0x4000
MFR_TEMP_1_OFFSET
MFR_RAIL_ADDRESS
0xF9 Sets the offset of the external temperature
sensor with respect to –273.1°C
0xFA Common address for PolyPhase outputs to
adjust common parameters.
R/W Word
R/W Byte
Y
Y
L11
Reg
C
Y
Y
0.0
0x8000
0x80
MFR_RESET
0xFD Commanded reset without requiring a power
down.
Send Byte
N
NA
Note 1: Commands indicated with Y indicate that these commands are
stored and restored using the STORE_USER_ALL and RESTORE_USER_
ALL commands, respectively.
Note 2: Commands with a default value of NA indicate “not applicable”.
Commands with a default value of FS indicate “factory set on a per part
basis”.
Note 3: The LTC3880 contains additional commands not listed in this
table. Reading these commands is harmless to the operation of the IC;
however, the contents and meaning of these commands can change
without notice.
Note 4: Some of the unpublished commands are read-only and will
generate a CML bit 6 fault if written.
Note 5: Writing to commands not published in this table is not permitted.
Note 6: The user should not assume compatibility of commands
between different parts based upon command names. Always refer to
the manufacturer’s data sheet for each part for a complete definition of a
command’s function.
LTC has made every reasonable attempt to keep command functionality
compatible between parts; however, differences may occur to address
product requirements.
3880fb
For more information www.linear.com/LTC3880
35
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