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| 型号： | ADM1066ASUZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/32页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER/SUPERVISOR 48TQFP |
| 标准包装： | 2,000 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 12 |
| 输出： | 可编程 |
| 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： | 48-TQFP |
| 供应商设备封装： | 48-TQFP（7x7） |
| 包装： | 带卷 (TR) |
| 配用： | EVAL-ADM1066TQEBZ-ND - BOARD EVALUATION FOR ADM1066TQ |
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ADM1066
POWERING THE ADM1066
The ADM1066 is powered from the highest voltage input on
either the positive-only supply inputs (VPx) or the high voltage
supply input (VH). This technique offers improved redundancy
because the device is not dependent on any particular voltage rail
to keep it operational. The same pins are used for supply fault
detection (see the Supply Supervision section). A V DD arbitrator
on the device chooses which supply to use. The arbitrator can
When two or more supplies are within 100 mV of each other,
the supply that first takes control of V DD keeps control. For
example, if VP1 is connected to a 3.3 V supply, V DD powers up
to approximately 3.1 V through VP1. If VP2 is then connected to
another 3.3 V supply, VP1 still powers the device, unless VP2
goes 100 mV higher than VP1.
VDDCAP
be considered an OR’ing of five low dropout regulators (LDOs)
together. A supply comparator chooses the highest input to provide
the on-chip supply. There is minimal switching loss with this
architecture (~0.2 V), resulting in the ability to power the
ADM1066 from a supply as low as 3.0 V. Note that the supply on
the VXx pins cannot be used to power the device.
An external capacitor to GND is required to decouple the on-chip
supply from noise. This capacitor should be connected to the
VP1
VP2
VP3
IN
EN
IN
EN
IN
EN
OUT
4.75V
LDO
OUT
4.75V
LDO
OUT
4.75V
LDO
VDDCAP pin, as shown in Figure 21. The capacitor has another
use during brownouts (momentary loss of power). Under these
conditions, when the input supply (VPx or VH) dips transiently
below V DD , the synchronous rectifier switch immediately turns
off so that it does not pull V DD down. The V DD capacitor can
VP4
VH
IN
EN
IN
EN
OUT
4.75V
LDO
OUT
4.75V
LDO
INTERNAL
DEVICE
SUPPLY
then act as a reservoir to keep the device active until the next
highest supply takes over the powering of the device. A 10 μF
capacitor is recommended for this reservoir/decoupling function.
The VH input pin can accommodate supplies up to 14.4 V, which
allows the ADM1066 to be powered using a 12 V backplane supply.
In cases where this 12 V supply is hot swapped it is recommended
that the ADM1066 not be connected directly to the supply. Suitable
precautions, such as the use of a hot swap controller, should be
taken to protect the device from transients that could cause
damage during hot swap events.
Rev. E | Page 14 of 32
SUPPLY
COMPARATOR
Figure 21. V DD Arbitrator Operation
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相关代理商/技术参数 |
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|---|---|
| ADM1066ASUZ-REEL7 | 功能描述:IC SEQUENCER/SUPERVISOR 48TQFP 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 |
| ADM1067 | 制造商:AD 制造商全称:Analog Devices 功能描述:Super Sequencer with Open-Loop Margining DACs |
| ADM1067ACP | 制造商:Analog Devices 功能描述:Sequencer 40-Pin LFCSP EP |
| ADM1067ACP-REEL | 制造商:Analog Devices 功能描述:Sequencer 40-Pin LFCSP EP T/R |
| ADM1067ACP-REEL7 | 制造商:Analog Devices 功能描述:Sequencer 40-Pin LFCSP EP T/R |
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