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參數(shù)資料
| 型號(hào)： | LM8364BALMF45 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Micropower Undervoltage Sensing Circuits |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 199K |
| 代理商： | LM8364BALMF45 |
Application Notes
The propagation delay time for the LM8364 is measured
using a 470k
pull-up resistor connected to from the RESET
output pin to 5V in addition to a 10pF capacitive load con-
nected from the same pin to GND.
Figure 1
shows the timing
diagram for the measurement for the propagation delay.
V
is equal to the sum of the detector threshold, V
DET
,
and the built in hysteresis, V
HYS
.
The LM8364 ultra-low current voltage detector was designed
to monitor voltages and to provide an indication when the
monitored voltage, V
IN
, dropped below a precisely trimmed
threshold voltage. This characteristic is displayed in the typi-
cal operating timing diagram below. V
IN
is the voltage that is
being monitored and a pull up resistor is connected from the
RESET output pin to V
. V
is at some value above V
and then begins to decrease. Since this is an Active Low
device the RESET output is pulled High through the pull-up
resistor and tracks V
until V
crosses the trimmed thresh-
old V
. At this point the LM8364 recognizes that V
is
now in a fault condition and the output immediately changes
to the Logic Low State. The RESET output will remain in this
low state until V
IN
increases above the threshold V
DET
+
V
HYS
. This point is also known as V
DET+
as indicated earlier.
This built-in hysteresis has been added to the design to help
prevent erratic reset operation when the input voltage
crosses the threshold.
The LM8364 has a wide variety of applications that can take
advantage of its precision and low current consumption to
monitor Input voltages even though it was designed as a
reset controller in portable microprocessor based systems. It
is a very cost effective and space saving device that will
protect your more expensive investments of microproces-
sors and other devices that need a guaranteed supply volt-
age for proper operation.
20065909
FIGURE 1. Propagation Delay Timing Diagrams
20065910
FIGURE 2. Timing Waveforms
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM8364BALMF45 | 制造商:Texas Instruments 功能描述:IC VOLT MONITOR CIRCUIT SMD 8364 |
| LM8364BALMF45/NOPB | 功能描述:IC DETECT UNDERVOLT 4.5V SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| LM8364BALMFX20 | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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 |
| LM8364BALMFX20/NOPB | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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 |
| LM8364BALMFX27/NOPB | 功能描述:IC UNDER VOLTAGE SENS SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:推挽式，圖騰柱 復(fù)位:低有效 復(fù)位超時(shí):最小 145 ms 電壓 - 閥值:2.64V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR) |
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