参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 76/112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
External Temperature Limits
COMMAND NAME
CMD CODE DESCRIPTION
TYPE
PAGED
DATA
FORMAT UNITS
NVM
DEFAULT
VALUE
OT_FAULT_LIMIT
OT_WARN_LIMIT
UT_FAULT_LIMIT
0x4F
0x51
0x53
External overtemperature fault limit.
External overtemperature warning limit.
External undertemperature fault limit.
R/W Word
R/W Word
R/W Word
Y
Y
Y
L11
L11
L11
C
C
C
Y
Y
Y
100.0
0xEB20
85.0
0xEAA8
–40.0
0xE580
OT_FAULT_LIMIT
The OT_FAULT_LIMIT command sets the value of the external sense temperature, in degrees Celsius, which causes an
overtemperature fault. The READ_TEMPERATURE_1 value will be used to determine if this limit has been exceeded.
This condition is detected by the ADC so the response time may be up to 120ms.
This command has two data bytes and is formatted in Linear_5s_11s format.
OT_WARN_LIMIT
The OT_WARN_LIMIT command sets the value of the external sense temperature, in degrees Celsius, which causes
an overtemperature warning. The READ_TEMPERATURE_1 value will be used to determine if this limit has been ex-
ceeded.
In response to the OT_WARN_LIMIT being exceeded, the device:
? Sets the TEMPERATURE bit in the STATUS_BYTE
? Sets the Overtemperature Warning bit in the STATUS_TEMPERATURE command, and
? Notifies the host by asserting ALERT pin.
This condition is detected by the ADC so the response time may be up to 120ms.
This command has two data bytes and is formatted in Linear_5s_11s format.
UT_FAULT_LIMIT
The UT_FAULT_LIMIT command sets the value of the external sense temperature, in degrees Celsius, which causes
an undertemperature fault. The READ_TEMPERATURE_1 value will be used to determine if this limit has been
exceeded.
Note: If the temp sensors are not installed, the UT_FAULT_LIMIT can be set to –275°C and UT_FAULT_LIMIT response
set to ignore to avoid ALERT being asserted.
This condition is detected by the ADC so the response time may be up to 120ms.
This command has two data bytes and is formatted in Linear_5s_11s format.
3880fb
76
For more information www.linear.com/LTC3880
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