参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 84/112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 Responses IC Temperature
COMMAND NAME
CMD CODE DESCRIPTION
TYPE
PAGED
DATA
FORMAT UNITS
NVM
DEFAULT
VALUE
MFR_OT_FAULT_RESPONSE
0xD6
Action to be taken by the device when an
internal overtemperature fault is detected
R Byte
N
Reg
0xC0
MFR_OT_FAULT_RESPONSE
The MFR_OT_FAULT_RESPONSE command byte instructs the device on what action to take in response to an internal
overtemperature fault. The data byte is in the format given in Table 8.
The LTC3880 also:
? Sets the MFR bit in the STATUS_WORD, and
? Sets the Overtemperature Fault bit in the STATUS_MFR_SPECIFIC command
? Notifies the host by asserting ALERT pin
This command has one data byte.
Table 8. Data Byte Contents MFR_OT_FAULT_RESPONSE
BITS
7:6
DESCRIPTION
Response
For all values of bits [7:6], the LTC3880:
? Sets the corresponding fault bit in the status commands and
? Notifies the host by asserting ALERT pin
The fault bit, once set, is cleared only when one or more of the
following events occurs:
? The device receives a CLEAR_FAULTS command
VALUE
00
01
10
11
MEANING
Not supported. Writing this value will generate a CML fault.
Not supported. Writing this value will generate a CML fault
The device shuts down immediately (disables the output) and
responds according to the retry setting in bits [5:3].
The device’s output is disabled while the fault is present.
Operation resumes and the output is enabled when the fault
condition no longer exists.
? The output is commanded through the RUN n pin, the
OPERATION command, or the combined action of the RUN n pin
and OPERATION command, to turn off and then to turn back on,
or
? Bias power is removed and reapplied to the LTC3880
5:3
Retry Setting
000
The unit does not attempt to restart. The output remains
disabled until the fault is cleared.
001-111 Not supported. Writing this value will generate CML fault.
2:0
Delay Time
XXX
Not supported. Value ignored
3880fb
84
For more information www.linear.com/LTC3880
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