参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 90/112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 DETAILS
FAULT WARNING AND STATUS
COMMAND NAME
CLEAR_FAULTS
MFR_CLEAR_PEAKS
CMD CODE DESCRIPTION
0x03
Clear any fault bits that have been set.
0xE3
Clears all peaks values.
TYPE
Send Byte
Send Byte
PAGED
N
N
FORMAT UNITS
NVM
DEFAULT
VALUE
NA
NA
STATUS_BYTE
0x78
One byte summary of the unit’s fault condition.
R/W Byte
Y
Reg
NA
STATUS_WORD
0x79
Two byte summary of the unit’s fault condition. R/W Word
Y
Reg
NA
STATUS_VOUT
STATUS_IOUT
STATUS_INPUT
STATUS_ TEMPERATURE
STATUS_CML
STATUS_MFR_ SPECIFIC
MFR_PADS
MFR_COMMON
0x7A
0x7B
0x7C
0x7D
0x7E
0x80
0xE5
0xEF
Output voltage fault and warning status.
Output current fault and warning status.
Input supply fault and warning status.
External temperature fault and warning status
for READ_TEMERATURE_1.
Communication and memory fault and
warning status.
Manufacturer specific fault and state
information.
Digital status of the I/O pads.
Manufacturer status bits that are common
across multiple LTC chips.
R/W Byte
R/W Byte
R/W Byte
R/W Byte
R/W Byte
R/W Byte
R Word
R Byte
Y
Y
N
Y
N
Y
N
N
Reg
Reg
Reg
Reg
Reg
Reg
Reg
Reg
NA
NA
NA
NA
NA
NA
NA
NA
CLEAR_FAULTS
The CLEAR_FAULTS command is used to clear any fault bits that have been set. This command clears all bits in all
status commands simultaneously. At the same time, the device negates (clears, releases) its ALERT pin signal output
if the device is asserting the ALERT pin signal.
The CLEAR_FAULTS does not cause a unit that has latched off for a fault condition to restart. Units that have shut down
for a fault condition are restarted when:
? The output is commanded through the RUN pin, the OPERATION command, or the combined action of the RUN pin
and OPERATION command, to turn off and then to turn back on, or
? MFR_RESET command is issued.
? Bias power is removed and reapplied to the integrated circuit
If the fault is still present when the bit is cleared, the fault bit will remain set and the host notified by asserting the
ALERT pin pin low. CLEAR_FAULTS can take up to 10μs to process. If a fault occurs within that time frame it may be
cleared before the status register is set.
This write-only command has no data bytes.
MFR_CLEAR_PEAKS
The MFR_CLEAR_PEAKS command clears the MFR_*_PEAK data values. A reset will initiate this command.
This write-only command has no data bytes.
3880fb
90
For more information www.linear.com/LTC3880
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