- 您現(xiàn)在的位置：買賣IC網(wǎng) > Datasheet目錄39 > ADP5042ACPZ-2-R7 (Analog Devices Inc)IC REG TRPL BCK/LINEAR 20LFCSP Datasheet資料下載
參數(shù)資料
| 型號(hào)： | ADP5042ACPZ-2-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 22/32頁 |
| 文件大?。?/td> | 1378K |
| 描述： | IC REG TRPL BCK/LINEAR 20LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 拓?fù)洌?/td> | 降壓（降壓）同步（1），線性（LDO）（2） |
| 功能： | 任何功能 |
| 輸出數(shù)： | 3 |
| 頻率 - 開關(guān)： | 3MHz |
| 電壓/電流 - 輸出 1： | 1.5V，800mA |
| 電壓/電流 - 輸出 2： | 1.8V，300mA |
| 電壓/電流 - 輸出 3： | 3.3V，300mA |
| 帶 LED 驅(qū)動(dòng)器： | 無 |
| 帶監(jiān)控器： | 是 |
| 帶序列發(fā)生器： | 是 |
| 電源電壓： | 1.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-WFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 20-LFCSP-WQ（4x4） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | ADP5042ACPZ-2-R7DKR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當(dāng)前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
ADP5042
Data Sheet
Rev. A | Page 22 of 32
Watchdog Status Indicator
In addition to the dual watchdog function, the ADP5042
features a watchdog status monitor available on the WSTAT pin.
This pin can be queried by the external processor to determine
the origin of a reset. WSTAT is an open-drain output.
WSTAT outputs a logic level depending on the condition that
has generated a reset. WSTAT is forced low if the reset was
generated because of a Watchdog 2 timeout. WSTAT is pulled
high, through external pull-up, for any other reset cause (Watchdog
1 timeout, power failure or monitored voltage below threshold).
The status monitor is automatically cleared (set to logic level
high) 10 seconds after the nRSTO low to high transition (t
WDCLEAR
),
processor firmware must be designed being able to read the
WSTAT flag before tWDCLEAR expiration after a Watchdog 2 reset.
The WSTAT flag is not updated in the event of a reset due to a
low voltage threshold detection or Watchdog 1 event occurring
within 10 seconds after nRSTO low to high transition. In this
situation, WSTAT maintains the previous state (see state flow in
Figure 60).
The external processor can further distinguish a reset caused by
a Watchdog 1 timeout from a power failure, status monitor
WSTAT indicating a high level, by implementing a RAM check
or signature verification after reset. A RAM check or signature
failure indicates that a power failure has occurred, whereas a
RAM check or signature validation indicates that a Watchdog 1
timeout has occurred.
Table 10 shows the possible watchdog decoded statuses.
Table 10. Watchdog Status Decoding
WSTAT
RAM CHECKSUM
RESET ORIGIN
High
Failed
Power failure
High
Ok
Watchdog 1
Low
Don't care
Watchdog 2
NO POWER APPLIED TO AVIN.
ALL REGULATORS AND SUPERVISORY
TURNED OFF
NO POWER
POR
STANDBY
WSTAT = HIGH
WSTAT = HIGH
RESET
NORMAL
WSTAT = LOW
AVIN < VUVLO
ALL ENx = LOW
AVIN > VUVLO
TRANSITION
STATE
TRANSITION
STATE
TRANSITION
STATE
END OF POR
WSTAT
TIMEOUT
(t
WDCLEAR
)
WSTAT = 1
TRANSITION
STATE
ALL REGULATORS AND
SUPERVISOR ACTIVATED
WDOG2
TIMEOUT
(t
WD2
)
WSTAT = 0
END OF (t
POFF
)
PULSE
WDOG1 TIMEOUT
(t
WD1
) AND
WSTAT TIMEOUT
WSTAT = 1
WDOG1 TIMEOUT
(t
WD1
)
ALL ENx = HIGH
ACTIVE
POWER OFF
RESET SHORT
AVIN < VUVLO
END OF RESET
PULSE (t
RP2
)
INTERNAL CIRCUIT BIASED
REGULATORS AND
SUPERVISORY NOT ACTIVATED
AVIN < VUVLO
VIN < VUVLO
VMON < VTH
END OF RESET
PULSE (t
RP1
)
Figure 60. ADP5042 State Flow
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADT6402SRJZ-RL7 | IC TEMP SENS TRIP PT PP SOT-23-6 |
| ADT6501SRJZP085RL7 | IC TEMP SENSOR MICROPWR SOT23-5 |
| ADT7302ARTZ-500RL7 | IC SENSOR TEMP 13BIT DGT SOT23-6 |
| ADT7310TRZ | IC TEMP SENSOR 16BIT SPI 8SOIC |
| ADT7461AARMZ-R | IC TEMP SENSOR DGTL 2CH 8-MSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADP5042CP-1-EVALZ | 功能描述:電源管理IC開發(fā)工具 Output Buck Regulator + Dual Fixed Eval RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| ADP5042CP-2-EVALZ | 功能描述:電源管理IC開發(fā)工具 Output Buck Regulator + Dual Fixed Eval RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| ADP5043ACPZ-1-R7 | 功能描述:IC REG DL BUCK/LINEAR 20LFCSP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| ADP5043CP-1-EVALZ | 功能描述:BOARD EVAL ADP5043CP-1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ADP50450003CBZR | 制造商:Analog Devices 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。