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參數(shù)資料
| 型號： | MAX6302CPA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | +5V, Low-Power uP Supervisory Circuits with Adjustable Reset/Watchdog |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 102K |
| 代理商： | MAX6302CPA |
M
+5V, Low-Power μP S upervisory Circ uits
with Adjustable Reset/Watc hdog
_______________________________________________________________________________________
5
______________________________________________________________Pin Desc ription
NAME
FUNCTION
1
RESET IN
Reset Input. High-impedance input to the reset comparator. Connect this pin to the center point of an
external resistor voltage-divider network to set the reset threshold voltage. The reset threshold voltage
is calculated as follows: V
RST
= 1.22 x (R1 + R2) / R2 (see Typical Operating Circuit.
2
GND
Ground
PIN
3
SRT
Set Reset-Timeout Input. Connect a capacitor between this input and ground to select the reset timeout
period (t
RS
). Determine the period as follows: t
RP
= 2.67 x C
SRT
, with C
SRT
in pF and t
RP
in μs (see
Typical Operating Circuit.
4
SWT
Set Watchdog-Timeout Input. Connect a capacitor between this input and ground to select the basic
watchdog timeout period (t
WD
). Determine the period as follows: t
WD
= 2.67 x C
SWT
, with C
SWT
in pF
and t
WD
in μs. The watchdog function can be disabled by connecting this pin to ground.
RESET
(MAX6301/3)
Push/Pull, Active-Low Reset
Output (MAX6303)
RESET
changes from high to low whenever the monitored voltage
(V
IN
) drops below the selected reset threshold (V
RST
).
RESET
remains low as long as V
IN
is below V
RST
. Once V
IN
exceeds V
RST
,
RESET
remains low for the reset timeout period and then goes high.
The watchdog timer triggers a reset pulse (t
RP
) whenever the watch-
dog timeout period (t
WD
) is exceeded.
6
WDI
Watchdog Input. A rising or falling transition must occur on this input within the selected watchdog
timeout period, or a reset pulse will occur. The capacitor value selected for SWT and the state of WDS
determine the watchdog timeout period. The watchdog timer clears and restarts when a transition
occurs on WDI or WDS. The watchdog timer is cleared when reset is asserted and restarted after reset
deasserts. In the extended watchdog mode (WDS = V
CC
), the watchdog function can be disabled by
driving WDI with a three-stated driver or by leaving WDI unconnected.
5
WDS
Watchdog-Select Input. This input selects the watchdog mode. Connect to ground to select normal mode
and the basic watchdog timeout period. Connect to V
CC
to select extended mode, multiplying the basic
timeout period by a factor of 500. A change in the state of this pin resets the watchdog timer to zero.
7
V
CC
Supply Voltage
RESET
(MAX6302/4)
Push/Pull, Active-High Reset
Output (MAX6304)
Open-Drain, Active-High Reset
Output (MAX6302)
8
Open-Drain, Active-Low Reset
Output (MAX6301)
RESET changes from low to high whenever the monitored voltage
(V
IN
) drops below the selected reset threshold (V
RST
). RESET
remains high as long as V
IN
is below V
RST
. Once V
IN
exceeds V
RST
,
RESET remains high for the reset timeout period and then goes low.
The watchdog timer triggers a reset pulse (t
RP
) whenever the watch-
dog timeout period (t
WD
) is exceeded.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6302CPA+ | 功能描述:監(jiān)控電路 5V uPower Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6302CSA | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6302CSA+ | 功能描述:監(jiān)控電路 5V uPower Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6302CSA+T | 功能描述:監(jiān)控電路 5V uPower Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6302CSA-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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