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參數(shù)資料
| 型號： | ADM1065ASU-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 電源管理 |
| 英文描述： | Super Sequencer-TM and Monitor |
| 中文描述： | 10-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48 |
| 封裝： | 7 X 7 MM, PLASTIC, MS-026ABC, TQFP-48 |
| 文件頁數(shù)： | 16/28頁 |
| 文件大?。?/td> | 497K |
| 代理商： | ADM1065ASU-REEL |
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ADM1065
SEQUENCING ENGINE APPLICATION EXAMPLE
The application in this section demonstrates the operation of
the SE. Figure 21 shows how the simple building block of a
single SE state can be used to build a power-up sequence for a
3-supply system.
Rev. 0 | Page 16 of 28
Table 7 lists the PDO outputs for each state in the same SE
implementation. In this system, the presence of a good 5 V supply
on VP1 and the VX1 pin held low are the triggers required for a
power-up sequence to start. The sequence intends to turn on
the 3.3 V supply next, then the 2.5 V supply (assuming successful
turn-on of the 3.3 V supply). Once all three supplies are good,
the PWRGD state is entered, where the SE remains until a fault
occurs on one of the three supplies, or it is instructed to go
through a power-down sequence by VX1 going high.
Faults are dealt with throughout the power-up sequence on a
case-by-case basis. The following sections, which describe the
individual blocks, use this sample application to demonstrate
the state machine’s actions.
0
IDLE1
IDLE2
EN3V3
DIS3V3
DIS2V5
PWRGD
FSEL1
FSEL2
SEQUENCE
STATES
MONITOR FAULT
STATES
TIMEOUT
STATES
VX1 = 0
VP1 = 1
VP1 = 0
(VP1 + VP2) = 0
(VP1 + VP2 + VP3) = 0
V(VP1 +
VP2 = 1
VP3 = 1
VP2 = 0
VX1 = 1
VP3 = 0
VP2 = 0
VP1 = 0
VX1 = 1
VX1 = 1
10ms
20ms
EN2V5
Figure 21. Sample Application Flow Diagram
Table 7. PDO Outputs for Each State
PDO Outputs
PDO1 = 3V3ON
PDO2 = 2V5ON
PDO3 = FAULT
IDLE1
0
0
0
IDLE2
0
0
0
EN3V3
1
0
0
EN2V5
1
1
0
DIS3V3
0
1
1
DIS2V5
1
0
1
PWRGD
1
1
0
FSEL1
1
1
1
FSEL2
1
1
1
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相關(guān)代理商/技術(shù)參數(shù) |
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| ADM1065ASU-REEL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Super Sequencer-TM and Monitor |
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| ADM1065ASUZ-RL7 | 功能描述:IC SEQUENCER/MONITOR 48-TQFP 制造商:analog devices inc. 系列:Super Sequencer? 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:序列發(fā)生器 受監(jiān)控電壓數(shù):10 輸出:可編程 復(fù)位:- 復(fù)位超時:- 電壓 - 閾值:可調(diào)節(jié)/可選擇 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商器件封裝:48-TQFP（7x7） 標(biāo)準(zhǔn)包裝:1 |
| ADM1066 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multisupply Supervisor/Sequencer with Margining Control and Auxiliary ADC Inputs |
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