- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377762 > LTC1726EMS8-2.5 (LINEAR TECHNOLOGY CORP) Triple Supply Monitor and uP Supervisor with Adjustable Reset and Watchdog Timer PDF資料下載
參數(shù)資料
| 型號： | LTC1726EMS8-2.5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Triple Supply Monitor and uP Supervisor with Adjustable Reset and Watchdog Timer |
| 中文描述： | 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 172K |
| 代理商： | LTC1726EMS8-2.5 |
5
LTC1726
timer is not cleared, a reset pulse will occur. The watch-
dog timer is cleared during a reset and restarts when the
reset is deasserted. When disabling the watchdog func-
tion, this pin should be connected to either V
CC3
or
ground and WT must be grounded.
RST (Pin 6):
Reset Logic Output. Active low, open-drain
logic output with weak pull-up to V
CC3
. Asserted when
one or more of the supplies are below trip thresholds.
After all supplies become valid, the reset remains as-
serted for the period set by the capacitor on the RT pin.
The watchdog timer can also trigger the reset whenever
the watchdog time-out period is exceeded. This pin can
be pulled up greater than V
CC3
when interfacing to 5V
logic.
WT (Pin 7):
Watchdog Time-Out Input. Place a capacitor
between this pin and ground to adjust the watchdog time-
out period. To determine the watchdog time-out period:
t
WT
= 21.8 C
WT
with t
WT
in
μ
s and C
WT
in pF. As an example, a 47nF
capacitor will generate a 1s watchdog time-out period.
The watchdog function can be disabled by connecting
this pin to ground.
V
CC3
(Pin 1):
3.3V Sense Input. This pin also supplies
power to the part when the voltage on this pin is greater
than the voltage on V
CC25
/V
CC5
. Bypass this pin to ground
with a 0.1
μ
F or larger ceramic capacitor.
V
CC5
(Pin 2):
5V Sense Input (LTC1726-5). This pin also
supplies power to the part when the voltage on this pin is
greater than the voltage on V
CC3
. Bypass this pin to
ground with a 0.1
μ
F or larger ceramic capacitor.
V
CC25
(Pin 2):
2.5V Sense Input (LTC1726-2.5). This pin
also supplies power to the part when the voltage on this
pin is greater than the voltage on V
CC3
. Bypass this pin to
ground with a 0.1
μ
F or larger ceramic capacitor.
V
CCA
(Pin 3):
1V Sense, High Impedance Input. If unused
it can be tied to either V
CC3
, V
CC5
or V
CC25
.
GND (Pin 4):
Ground.
WDI (Pin 5):
Watchdog Input. A logic input whose rising
or falling edge must occur on this pin within the selected
watchdog time-out period or a reset pulse will occur. The
watchdog time-out period is set by the value of the
capacitor that is placed on the WT pin. The rising or falling
edge of this pin clears the voltage on the WT capacitor,
preventing a reset pulse from occurring. If the watchdog
Time-Out Period vs Capacitance
C
RT
OR C
WT
(pF)
0.1
1
10
t
R
W
μ
s
10
6
10
5
10
4
10
3
10
2
10
2
10
3
10
4
10
1726 G12
t
WT
t
RT
T
A
= 25
°
C
RST Output Voltage vs
Supply Voltage (LTC1726-2.5)
TYPICAL PERFOR U
V
CC3
(V)
0
2
1726 F13
1
1
2
3
0
3
R
V
= V
= V
10k PULL-UP FROM V
CC3
TO RST
T
A
= 25
°
C
PIU
相關PDF資料 |
PDF描述 |
|---|---|
| LTC1726 | Triple Supply Monitor and uP Supervisor with Adjustable Reset and Watchdog Timer |
| LTC1726-5 | Precision Quad Supply Monitor in 6-Lead SOT-23 |
| LTC1726EMS8-5 | Triple Supply Monitor and uP Supervisor with Adjustable Reset and Watchdog Timer |
| LTC1726ES8-5 | Triple Supply Monitor and uP Supervisor with Adjustable Reset and Watchdog Timer |
| LTC1726IS8-2.5 | Dual 16-By-4 Register Files 24-PDIP 0 to 70 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1726EMS8-5 | 功能描述:IC TRPL SUPPLY MONITOR 5V 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標準包裝:400 系列:- 類型:備用電池電路 監(jiān)視電壓數(shù)目:1 輸出:開路漏極，推挽式 復位:高有效/低有效 復位超時:最小為 35 ms 電壓 - 閥值:4.65V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR |
| LTC1726EMS8-5#PBF | 功能描述:IC TRPL SUPPLY MONITOR 5V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標準包裝:400 系列:- 類型:備用電池電路 監(jiān)視電壓數(shù)目:1 輸出:開路漏極，推挽式 復位:高有效/低有效 復位超時:最小為 35 ms 電壓 - 閥值:4.65V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR |
| LTC1726EMS8-5#TR | 功能描述:IC MON TRPL SPPLY SUPERVSR 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標準包裝:400 系列:- 類型:備用電池電路 監(jiān)視電壓數(shù)目:1 輸出:開路漏極，推挽式 復位:高有效/低有效 復位超時:最小為 35 ms 電壓 - 閥值:4.65V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR |
| LTC1726EMS8-5#TRPBF | 功能描述:IC TRPL SUPPLY MONITOR 5V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標準包裝:400 系列:- 類型:備用電池電路 監(jiān)視電壓數(shù)目:1 輸出:開路漏極，推挽式 復位:高有效/低有效 復位超時:最小為 35 ms 電壓 - 閥值:4.65V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR |
| LTC1726EMS8-5PBF | 制造商:Linear Technology 功能描述:Processor Supervisor 3.3V/5V/Adj MSOP8 |
發(fā)布緊急采購，3分鐘左右您將得到回復。