- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377743 > LTC1326CMS8-2.5 (LINEAR TECHNOLOGY CORP) Micropower Precision Triple Supply Monitors PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC1326CMS8-2.5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Micropower Precision Triple Supply Monitors |
| 中文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 303K |
| 代理商： | LTC1326CMS8-2.5 |
10
LTC1326/LTC1326-2.5
Figure 3 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 LTC1326 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
4.725V. (See Figure 4.)
LTC1326-2.5 Override Functions
The V
CCA
pin, if unused, can be tied to either V
CC3
or V
CC25
.
This is an obvious solution since the trip points for V
CC3
and V
CC25
will always be greater than the trip point for
V
CCA
. Likewise, the V
CC25
, if unused, can be tied to V
CC3
.
V
CC3
must always be used. Tying V
CC3
to V
CC25
and
operating off of a 2.5V supply will result in the continuous
assertion of RST.
Extending ESD Tolerance on the PBR Input Pin
The PBR pin is susceptible to ESD since it may be brought
out to a front panel in normal applications. The ESD
tolerance of this pin can be increased by adding a resistor
in series with the PBR pin. A 10k resistor can increase the
ESD tolerance of the PBR pin to approximately 10kV. The
PBR’s internal pull-up current of 7
μ
A typical means there
is only 70mV (150mV max) dropped across the resistor.
See Figure 5.
APPLICATIU
W
U
U
PUSH-BUTTON
RESET
1
2
3
4
8
7
6
5
V
CC3
V
CC25
V
CCA
GND
PBR
SRST
RST
RST
LTC1326-2.5
3.3V
SYSTEM RESET
2.5V
R2
R1
1326
/2.5
F05
ADJUSTABLE SUPPLY
OR DC/DC FEEDBACK
DIVIDER
10k*
*OPTIONAL RESISTOR EXTENDS ESD TOLERANCE OF PBR INPUT TO APPROXIMATELY 10kV
Figure 5. Triple Supply Monitor (3.3V, 2.5V
and Adjustable) with Extended ESD Tolerance
1
2
3
4
8
7
6
5
V
CC3
V
CC5
V
CCA
GND
PBR
SRST
RST
RST
LTC1326
SYSTEM RESET
1326
/2.5
F03
5V
0.1
μ
F
4.7k
D1*
*MMBD914 OR EQUIVALENT
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
1326/2.5 F04
5
4
3
2
1
0
V
CC5
= V
CCA
= 0V TO 5V
4.7k PULL-UP FROM RST TO V
CC5
T
A
= 25
°
C
Figure 3. LTC1326 Monitoring a Single 5V Supply.
D1 Used to Avoid RST High Near 3.3V to 4V (See
Figure 2).
Figure 4. RST Output Voltage
Characteristics of the Circuit in Figure 3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1326CS8 | Micropower Precision Triple Supply Monitors |
| LTC1326CS8-2.5 | Micropower Precision Triple Supply Monitors |
| LTC1326IS8 | Micropower Precision Triple Supply Monitors |
| LTC1326IS8-2.5 | Micropower Precision Triple Supply Monitors |
| LTC1326 | Micropower Precision Triple Supply Monitors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1326CMS8PBF | 制造商:Linear Technology 功能描述:Supply Monitor Prec. 5V/3.3V/Adj MSOP8 |
| LTC1326CS8 | 功能描述:IC PREC TRPL SUPPLY MONITR 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:高有效 復(fù)位超時(shí):- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT |
| LTC1326CS8#25124#TR | 制造商:Linear Technology 功能描述:PN may be NE DW |
| LTC1326CS8#PBF | 功能描述:IC PREC TRPL SUPPLY MONITR 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 其它有關(guān)文件:STM6905 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 類型:多壓監(jiān)控器 監(jiān)視電壓數(shù)目:5 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時(shí):最小為 140 ms 電壓 - 閥值:2.188V，2.955V，可調(diào)，可調(diào)，可調(diào) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1197 (CN2011-ZH PDF) 其它名稱:497-8728-6 |
| LTC1326CS8#TR | 功能描述:IC MONITOR TRPL SPPLY PREC 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:高有效 復(fù)位超時(shí):- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。