参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 79/112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
Precondition for Restart
COMMAND NAME
CMD CODE DESCRIPTION
TYPE
DATA
PAGED FORMAT UNITS
NVM
DEFAULT
VALUE
MFR_RESTART_ DELAY
0xDC
Delay from actual RUN active edge to virtual
RUN active edge.
R/W Word
Y
L11
ms
Y
500
0xFBE8
MFR_RESTART_DELAY
This command specifies the minimum RUN off time in milliseconds. This device will pull the RUN pin low for this length
of time once a falling edge of RUN has been detected. The minimum recommended value is 136ms.
Note: The restart delay is different than the retry delay. The restart delay pulls run low for the specified time, after which
a standard start-up sequence is initiated. The minimum restart delay should be equal to TOFF_DELAY + TOFF_FALL
+ 136ms. Valid values are from 136ms to 65.52 seconds in 16ms increments. To assure a minimum off time, set
the MFR_RESTART_DELAY 16ms longer than the desired time. The output rail can be off longer than the MFR_
RESTART_DELAY after the RUN pin is pulled high if the output decay bit 1 is enabled in MFR_CHAN_CONFIG_LTC3880
and the output takes a long time to decay below 12.5% of the programmed value.
This command has two data bytes and is formatted in Linear_5s_11s format.
FAULT RESPONSE
Fault Responses All Faults
COMMAND NAME
CMD CODE DESCRIPTION
TYPE
DATA
PAGED FORMAT UNITS
NVM
DEFAULT
VALUE
MFR_RETRY_ DELAY
0xDB
Retry interval during FAULT retry mode.
R/W Word
Y
L11
ms
Y
350
0xFABC
MFR_RETRY_DELAY
This command sets the time in milliseconds between restarts if the fault response is to retry the controller at specified
intervals. This command value is used for all fault responses that require retry. The retry time starts once the fault has
been detected by the offending channel. Valid values are from 120ms to 83.88 seconds in 10μs increments.
Note: The retry delay time is determined by the longer of the MFR_RETRY_DELAY command or the time required
for the regulated output to decay below 12.5% of the programmed value. If the natural decay time of the output is
too long, it is possible to remove the voltage requirement of the MFR_RETRY_DELAY command by asserting bit 0 of
MFR_CHAN_CONFIG_LTC3880.
This command has two data bytes and is formatted in Linear_5s_11s format.
Fault Responses Input Voltage
COMMAND NAME
CMD CODE DESCRIPTION
TYPE
DATA
PAGED FORMAT UNITS
NVM
DEFAULT
VALUE
VIN_OV_FAULT_RESPONSE
0x56
Action to be taken by the device when an
input supply overvoltage fault is detected.
R/W Byte
Y
Reg
Y
0x80
VIN_OV_FAULT_RESPONSE
The VIN_OV_FAULT_RESPONSE command instructs the device on what action to take in response to an input overvoltage
fault. The data byte is in the format given in Table 9.
3880fb
For more information www.linear.com/LTC3880
79
相关PDF资料
PDF描述
UCD0J152MNL1GS CAP ALUM 1500UF 6.3V 20% SMD
RMC28DRTI-S93 CONN EDGECARD 56POS DIP .100 SLD
MCP1703-2502E/DB IC REG LDO 2.5V .25A SOT-223-3
RCE20DHFD CONN EDGECARD 40POS 1MM SMD
RBE20DHFD CONN EDGECARD 40POS 1MM SMD
相关代理商/技术参数
参数描述
LTC3880IUJ#PBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3880IUJ#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3880IUJ-1#PBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3880IUJ-1#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC3883EUH#PBF 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN 制造商:Linear Technology 功能描述:BUCK CNTRL 24V 1MHZ 0.5/5.5V 32QFN 制造商:Linear Technology 功能描述:BUCK, CNTRL, 24V, 1MHZ, 0.5/5.5V, 32QFN 制造商:Linear Technology 功能描述:PWM CONTROLLER, BUCK, 1MHZ, 24V, QFN-32, Input Voltage:24V, Output Voltage:5.5V, Output Current:30A, Supply Voltage Min:4.5V, Supply Voltage Max:24V, Digital IC Case Style:QFN, No. of Pins:32, Frequency:1MHz, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes 制造商:Linear Technology 功能描述:DP-SWREG/Controller, Digitally Programmable, Multiphase Step-Down DC/DC Controll