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| 型号： | ADM1069ASTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/32页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR/SEQUENCER 32-LQFP |
| 标准包装： | 1 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 8 |
| 输出： | 可编程 |
| 电压 - 阀值： | 8 种可选阀值组合 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
| 产品目录页面： | 788 (CN2011-ZH PDF) |
| 配用： | EVAL-ADM1069LQEBZ-ND - BOARD EVALUATION FOR ADM1069LQ |
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ADM1069
Monitoring Fault Detector
The monitoring fault detector block is used to detect a failure on an
input. The logical function implementing this is a wide OR gate
that can detect when an input deviates from its expected condition.
The clearest demonstration of the use of this block is in the
PWRGD state, where the monitor block indicates that a failure
on one or more of the VP1, VP2, or VP3 inputs has occurred.
No programmable delay is available in this block because the
triggering of a fault condition is likely to be caused by a supply
falling out of tolerance. In this situation, the device needs to react as
quickly as possible. Some latency occurs when moving out of this
state because it takes a finite amount of time (~20 μs) for the state
is a block diagram of the monitoring fault detector.
MONITORING FAULT
DETECTOR
1-BIT FAULT
DETECTOR
Timeout Detector
The timeout detector allows the user to trap a failure to ensure
proper progress through a power-up or power-down sequence.
In the sample application shown in Figure 28, the timeout next-
state transition is from the EN3V3 and EN2V5 states. For the
EN3V3 state, the signal 3V3ON is asserted on the PDO1 output
pin upon entry to this state to turn on a 3.3 V supply.
This supply rail is connected to the VP2 pin, and the sequence
detector looks for the VP2 pin to go above its undervoltage
threshold, which is set in the supply fault detector (SFD)
attached to that pin.
The power-up sequence progresses when this change is detected.
If, however, the supply fails (perhaps due to a short circuit over-
loading this supply), the timeout block traps the problem. In this
example, if the 3.3 V supply fails within 10 ms, the SE moves to
the DIS3V3 state and turns off this supply by bringing PDO1
low. It also indicates that a fault has occurred by taking PDO3
VP1
SUPPLY FAULT
DETECTION
MASK
SENSE
FAULT
high. Timeout delays of 100 μs to 400 ms can be programmed.
FAULT AND STATUS REPORTING
The ADM1069 has a fault latch for recording faults. Two registers,
FSTAT1 and FSTAT2, are set aside for this purpose. A single bit
VX4
LOGIC INPUT CHANGE
OR FAULT DETECTION
WARNINGS
1-BIT FAULT
DETECTOR
FAULT
MASK
SENSE
1-BIT FAULT
DETECTOR
FAULT
is assigned to each input of the device, and a fault on that input
sets the relevant bit. The contents of the fault register can be
read out over the SMBus to determine which input(s) faulted.
The fault register can be enabled/disabled in each state. To latch
data from one state, ensure that the fault latch is disabled in the
following state. This ensures that only real faults are captured
and not, for example, undervoltage conditions that may be present
during a power-up or power-down sequence.
The ADM1069 also has a number of status registers. These
MASK
Figure 29. Monitoring Fault Detect or Block Diagram
include more detailed information, such as whether an under-
voltage or overvoltage fault is present on a particular input. The
status registers also include information on ADC limit faults.
Note that the data in the status registers is not latched in any
way and, therefore, is subject to change at any time.
See the AN-721 Application Note at www.analog.com for full
details about the ADM1069 registers.
Rev. C | Page 19 of 32
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| ADM1069ASTZ-REEL | 功能描述:IC SEQUENCER/SUPERVISOR 32LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM1069ASTZ-REEL7 | 功能描述:IC SEQUENCER/SUPERVISOR 32LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 其它有关文件:STM6905 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:5 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 140 ms 电压 - 阀值:2.188V，2.955V，可调，可调，可调 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-TSSOP 包装:Digi-Reel® 产品目录页面:1197 (CN2011-ZH PDF) 其它名称:497-8728-6 |
| ADM1070 | 制造商:AD 制造商全称:Analog Devices 功能描述:-48 V Hot Swap Controller |
| ADM1070ART | 制造商:AD 制造商全称:Analog Devices 功能描述:-48 V Hot Swap Controller |
| ADM1070ART-REEL | 制造商:Analog Devices 功能描述:Hot Swap Controller 1-CH -80V 6-Pin SOT-23 T/R 制造商:Analog Devices 功能描述:6-PIN -48V HOT SWAP CONTROLLER I.C. - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:6-PIN -48V HOT SWAP CONTROLLER I.C. - Tape and Reel |
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