参数资料
型号: EVAL-AD5100EBZ
厂商: Analog Devices Inc
文件页数: 21/36页
文件大小: 0K
描述: BOARD EVAL FOR AD5100
标准包装: 1
主要目的: 电源管理,电源监控器/跟踪器/序列发生器
已用 IC / 零件: AD5100
主要属性: 电压检测器和监控器
次要属性: 开漏极输出
已供物品:

AD5100
POWER REQUIREMENTS
INTERNAL POWER, V REG
The AD5100 internal power, V REG , is derived from V 1MON and
becomes active when V 2MON reaches 2.2 V. V 2MON is used to turn
AD5100 on and off with a different behavior depending on the
V 2MON monitoring mode selection.
By default, the AD5100 turns on when the voltage at V 2MON rises
above the logic threshold, V 2MON_ON . When V 2MON falls below the
logic threshold, V 2MON_OFF , AD5100 turns off 2 seconds after
SHDN is deasserted. Note that AD5100 requires 5 μs to start up
and that V 1MON must be applied before V 2MON . Extension of the
Rising Edge Triggered Wake-Up Mode
If rising edge triggered wake-up V 2MON mode is selected instead,
the AD5100 does not turn off when V 2MON returns to a logic low.
To configure the part into rising edge triggered mode, set the
V 2MON off threshold register, Register 0x04[3:1], to 1001.
In this mode, once the part is powered on, it can only be powered
down by an I 2 C power-down instruction or by removing the
supply on the V 1MON pin. To power down the part over the I 2 C
bus while in rising edge triggered mode, the user must first
ensure that the software power down feature is enabled.
AD5100 turn-off allows the system to complete any housekeeping
tasks before the system is powered off. Figure 18 shows the
default V 2MON and V REG waveforms.
?
?
Register 0x18[3] = 0: enable software power-down feature
Register 0x18[3] =1: disable software power-down feature
The user must then write to Register 0x17[0], to actually power
down the AD5100.
?
?
Register 0x17[0] = 0: AD5100 not in software power-down
Register 0x17[0] = 1: power down AD5100
This feature is for applications that use a wake-up signal.
t GLITCH
V 2MON_ON*
V 2MON_ON*
V 2MON
V 2MON_OFF*
V 2MON_OFF*
V 2MON,IH
t 2SD_HOLD*
t 2SD_DELAY*
t 2SD_HOLD*
t 2SD_DELAY*
t 2SD_DELAY*
SHDN
V REG
t VREG_ON_DELAY
t VREG_OFF_DELAY
t VREG_OFF_DELAY
NOTES
1. 6V < V 1MON < 30V
2. * = PROGRAMMABLE
Figure 18. Internal Power V REG vs. V 2MON Timing Diagrams (Default)
Rev. A | Page 21 of 36
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