參數(shù)資料
型號： LTC1727EMS8-2.5
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages
中文描述： 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： PLASTIC, MSOP-8
文件頁數(shù)： 11/16頁
文件大?。?/td> 188K
代理商： LTC1727EMS8-2.5
11
LTC1727/LTC1728
APPLICATIU
Figure 4 contains a simple circuit for 5V systems that can’t
risk the RST output going high in the 3.1V to 4.15V range
(possibly due to very slow rise time on the 5V supply).
Diode D1 powers the LTC1728-5 while dropping
≈
0.6V
from the V
CC5
pin to the V
CC3
pin. This prevents the part’s
internal override circuit from being activated. Without the
override circuit active, the RST pin stays low until V
CC5
reaches V
RT5
4.675V. (See Figure 5.)
W
U
U
Figure 5. RST Output Voltage
Characteristics of the Circuit in Figure 4
V
CC5
(V)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
R
1727/28 F05
5
4
3
2
1
0
V
CC5
= V
CCA
= 0V TO 5V
10k PULL-UP FROM RST TO V
CC5
T
A
= 25
°
C
Figure 4. LTC1728-5 Monitoring a Single 5V
Supply. D1 Used to Avoid RST High Near 3.1V
to 4V (See Figure 3).
V
CC3
V
CC5
V
CCA
GND
1
5
4
3
2
RST
LTC1728-5
1727/28 F04
TO SYSTEM
RESET
R1
10k
5V
0.1
μ
F
D1
D1: MMBD914 OR EQUIVALENT
LTC1727-2.5/LTC1728-2.5/LTC1728-1.8
Override Functions
The V
CCA
pin, if unused, can be tied to either V
CC3
or V
CC25
/
V
CC18
. This is an obvious solution since the trip points for
V
CC3
and V
CC25
/V
CC18
will always be greater than the trip
point for V
CCA
. Likewise, the V
CC25
/V
CC18
, if unused, can
be tied to V
CC3
. V
CC3
must always be used. Tying V
CC3
to
V
CC25
/V
CC18
and operating off of a 2.5V/1.8V supply will
result in the continuous assertion of RST.
相關(guān)PDF資料
PDF描述
LTC1727ES8-2.5 Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages
LTC1727ES8-5 Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages
LTC1727-2.5 Direct mounting on the PCB, Crimping connection, Discrete wire connectors; HRS No: 544-0084-6 00; No. of Positions: 16; Connector Type: Wire; Contact Gender: Male; Contact Spacing (mm): 2; Terminal Pitch (mm): 2; Current Rating(Amps)(Max.): 3; Operating Temperature Range (degrees C): -30 to 85; General Description: Plug; Crimping; Direct PCB mounting; Double row
LTC1727EMS8-5 Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages
LTC1727IS8-2.5 Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1727EMS85 制造商:Linear Technology 功能描述:
LTC1727EMS8-5 功能描述:IC MON TRPL SPPLY MICROPWR 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)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(fù)位:高有效/低有效 復(fù)位超時(shí):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(yīng)商設(shè)備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR
LTC1727EMS8-5#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(biāo)準(zhǔn)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(fù)位:高有效/低有效 復(fù)位超時(shí):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(yīng)商設(shè)備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR
LTC1727EMS8-5#TR 功能描述:IC MON TRPL SPPLY MICROPWR 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)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(fù)位:高有效/低有效 復(fù)位超時(shí):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(yīng)商設(shè)備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR
LTC1727EMS8-5#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(biāo)準(zhǔn)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(fù)位:高有效/低有效 復(fù)位超時(shí):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(yīng)商設(shè)備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR
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