参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 62/112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
ADDRESSING AND WRITE PROTECT
COMMAND NAME
PAGE
WRITE_PROTECT
MFR_ADDRESS
MFR_CHANNEL_ADDRESS
MFR_RAIL_ADDRESS
CMD
CODE DESCRIPTION
0x00 Channel or page currently selected for any
command that supports paging.
0x10 Level of protection provided by the device
against accidental changes.
0xE6 Sets the 7-bit I 2 C address byte.
0xD8 Address to the PAGE activated channel
0xFA Common address for PolyPhase outputs to
adjust common parameters.
TYPE
R/W Byte
R/W Byte
R/W Byte
R/W Byte
R/W Byte
PAGED
N
N
N
Y
Y
DATA
FORMAT
Reg
Reg
Reg
Reg
Reg
UNITS
NVM
Y
Y
Y
Y
DEFAULT
VALUE
0x00
0x00
0x4F
0x80
0x80
PAGE
The page command provides the ability to configure, control and monitor both outputs through only one physical ad-
dress. Each PAGE contains the Operating Memory for each output.
Pages 0x00 and 0x01 correspond to channel 0 and channel 1, respectively, in this device.
Setting the page to 0xFF means that the commands are to applied to both outputs. Performing READ commands with
PAGE set to 0xFF will return the same value as PAGE 0. When PAGE is set to 0xFF there are no restrictions on R/W
commands.
This command has one data byte.
WRITE_PROTECT
The WRITE_PROTECT command is used to control writing to the LTC3880 device. This command does not indicate the
status of the WP pin which is defined in the MFR_COMMON command. The WP pin takes precedence over the value
of this command unless the WRITE_PROTECT command is more stringent.
BYTE MEANING
0x80 Disable all writes except to the WRITE_PROTECT, PAGE_MFR_
EE_UNLOCK and STORE_USER_ALL command
0x40 Disable all writes except to the WRITE_PROTECT, PAGE,
MFR_EE_UNLOCK, MFR_CLEAR_PEAKS, STORE_USER_ALL,
OPERATION and CLEAR_FAULTS command. ndividual fault
bits can be cleared by writing a 1 to the respective bits in the
STATUS registers.
0x20 Disable all writes except to the WRITE_PROTECT, OPERATION,
MFR_EE_UNLOCK, MFR_CLEAR_PEAKS, CLEAR_FAULTS,
PAGE, ON_OFF_CONFIG, VOUT_COMMAND and STORE_USER_
ALL. Individual fault bits can be cleared by writing a 1 to the
respective bits in the STATUS registers.
0x10 Reserved, must be 0
0x08 Reserved, must be 0
0x04 Reserved, must be 0
0x02 Reserved, must be 0
0x01 Reserved, must be 0
Enable writes to all commands when WRITE_PROTECT is set to 0x00.
This command has one data byte.
3880fb
62
For more information www.linear.com/LTC3880
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