- 您现在的位置：买卖IC网 > PDF目录1775 > ADM1186-1ARQZ-REEL (Analog Devices Inc)IC SEQUENCER/MONITOR QUAD 20QSOP PDF资料下载
参数资料
| 型号： | ADM1186-1ARQZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/28页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER/MONITOR QUAD 20QSOP |
| 标准包装： | 2,500 |
| 类型： | 序列发生器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 高有效 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-QSOP |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
ADM1186
If the output of the 2.5 V regulator meets the UV level when the
blanking time elapses, the state machine continues the power-up
sequence, moving into the DELAY 2 state. A time delay, set by
the capacitor connected to the DLY_EN_OUT2 pin, elapses
before turning on the next enable output, OUT2, in the
ENABLE OUT2 state.
If the 1.8 V supply does not rise to the UV level before the
blanking time elapses, sequencing immediately stops and the
state machine enters the SET FAULT state.
The same scheme is implemented with the other output and
input pins. Every supply turned on via an output pin, OUTx, is
monitored via an input pin, VINx, to check that the supply has
risen above the UV level within the blanking time before the
state machine moves on to the next supply.
When a supply is on and operating correctly, the ADM1186
continues to monitor it for the duration of the power-up
sequence. If any supply drops below its UV threshold level
during a power-up sequence, sequencing stops and the state
machine enters the SET FAULT state.
When the state machine is in the WAIT START state, or at any
time during a power-up sequence, a falling edge on the DOWN
pin (ADM1186-1) or the UP/DOWN pin (ADM1186-2) generates
a fault.
The PWRGD pin is asserted high, independently of the state
machine, when all four VINx pins are above their UV threshold.
The state machine in the ADM1186-1 indicates that the power-
up sequence is complete by asserting the SEQ_DONE pin high.
OPERATION IN POWER-UP DONE STATE
When the power-up sequence is complete, the state machine
remains in the POWER-UP DONE state until one of the
following events occurs:
? A falling edge occurs on the DOWN (ADM1186-1) or
UP/DOWN (ADM1186-2) pin, initiating a power-down
sequence.
? An undervoltage condition occurs on one or more of VIN1
to VIN4, generating a fault.
? A rising edge occurs on the UP pin, generating a fault
(ADM1186-1 only).
? An external device brings the FAULT pin low, causing a
fault (ADM1186-1 only).
POWER-DOWN SEQUENCING AND MONITORING
Data Sheet
This sequence of steps is repeated until all four regulators
are switched off and the device is in the WAIT START state.
Because the ADM1186-2 does not have a DLY_EN_OUT1 pin,
there is no delay between the OUT1 pin being brought low and
the state machine returning to the WAIT START state. When
the device is in the WAIT START state, the SEQ_DONE pin is
brought low.
During a power-down sequence, the state machine monitors the
supplies that are still on. If a supply drops below its UV threshold
before it is turned off, the power-down sequence immediately
stops and the state machine enters the SET FAULT state.
A rising edge on the UP or UP/DOWN pin during a power-
down sequence generates a fault.
The PWRGD pin is asserted low, independently of the state
machine power-down sequence, when one or more of the
VINx pins drops below 0.6 V.
INPUT GLITCH FILTERING
The VINx, UP, DOWN, and FAULT inputs on the ADM1186-1
and the VINx and UP/DOWN inputs on the ADM1186-2 use a
time-based glitch filter to prevent false triggering. The glitch
filter avoids the need to use some of the operating supply range
to provide hysteresis on an input. This helps to maximize the
available operating supply range for a system, which is especially
important in systems where low supply voltages are being used.
The VINx inputs use a positive glitch filter that is approximately
five times longer than the negative glitch filter. This provides
additional glitch immunity during the power-up sequence as a
supply is rising, but still allows for a quick response in the event
of an undervoltage event on an input.
FAULT CONDITIONS AND FAULT HANDLING
During supply sequencing and operation in the POWER-UP
DONE state, the ADM1186 continuously monitors the VINx,
UP, DOWN, and UP/DOWN pins for fault conditions. The
FAULT pin on the ADM1186-1 is monitored to detect external
faults generated by other devices, which is important during
cascade operation.
The following faults are internally generated:
? A supply fails to reach the UV threshold within the time
defined by the BLANK_DLY capacitor during a power-up
sequence.
? A UV condition occurs on VINx after the blanking time
When the ADM1186 is in the POWER-UP DONE state, a
falling edge on the DOWN or UP/DOWN pin initiates a
The state machine moves to the DISABLE OUT4 state, bringing
the OUT4 pin low and switching off the 3.3 V regulator. A time
delay, set by the capacitor on the DLY_EN_OUT4 pin, elapses
before the state machine moves to the DISABLE OUT3 state.
?
?
?
has elapsed during a power-up sequence.
A UV condition occurs on VINx before the supply is
disabled during a power-down sequence.
A falling edge occurs on the DOWN or UP/DOWN pin
during a power-up sequence or in the WAIT START state.
A rising edge occurs on the UP or UP/DOWN pin during a
power-down sequence or in the POWER-UP DONE state.
Rev. B | Page 14 of 28
相关PDF资料 |
PDF描述 |
|---|---|
| ADM1232ARW | IC SUPERVISOR FOR CPU 16SOIC |
| ADM12914-2ARQZ | IC MONITOR QUAD UV/OV 16QSOP |
| ADM13305-25ARZ | IC SUPERVISR DUAL 3.3/2.5V 8SOIC |
| ADM13307-18ARZ | IC SUPERVISOR TRPL PROC 8-SOIC |
| ADM1817-R23AKS-RL7 | IC MONITOR RESET 2.31V SC-70-3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1186-2ARQZ | 功能描述:IC SEQUENCER/MONITOR QUAD 16QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:100 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极，开路漏极 复位:高有效/低有效 复位超时:最小为 250 ms 电压 - 阀值:4.37V，4.62V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 产品目录页面:1337 (CN2011-ZH PDF) |
| ADM1186-2ARQZ-REEL | 功能描述:IC SEQUENCER/MONITOR QUAD 16QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:400 系列:- 类型:备用电池电路 监视电压数目:1 输出:开路漏极，推挽式 复位:高有效/低有效 复位超时:最小为 35 ms 电压 - 阀值:4.65V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:带卷 (TR) 其它名称:ADM691ARZ-REEL7TR |
| ADM1191 | 制造商:AD 制造商全称:Analog Devices 功能描述:Digital Power Monitor with Convert Pin and ALERTB Output |
| ADM1191_08 | 制造商:AD 制造商全称:Analog Devices 功能描述:Digital Power Monitor with Convert Pin and ALERTB Output |
| ADM1191-2ARMZ-R7 | 功能描述:IC PWR MONITOR DGTL ALERT 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:热电冷却器 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.173"，4.40mm 宽）裸露焊盘 供应商设备封装:28-TSSOP 裸露焊盘 包装:管件 产品目录页面:1410 (CN2011-ZH PDF) |
发布紧急采购，3分钟左右您将得到回复。