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參數(shù)資料
| 型號(hào)： | MIC2779H-1BM5 |
| 廠商： | MICREL INC |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | 3455RMG Series Phenolic Manual Reset Thermostats |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 52K |
| 代理商： | MIC2779H-1BM5 |
MIC2779
Micrel
MIC2779
4
June 2000
Functional Description
The MIC2779 monitors the voltage of a battery and detects
when it is discharged below a programmed level. Upon being
replaced, or being recharged above a second higher pro-
grammed trip point, the output remains low (MIC2779L) or
high (MIC2779H) for a minimum of 140ms and then sends a
reset signal to a microprocessor or other downstream com-
ponent. See
“
Timing Diagram.
”
/RST, RST Low Output
The output is a push-pull logic signal which is asserted when
the MIC2779 detects a low input voltage. The MIC2779L
’
s
/RST output is active-low; the MIC2779H
’
s RST output is
active-high.
Functional Diagram
GND
V
BATT
RST*
1.24V
Bandgap
Reference
Low-Voltage
Detect
High-Voltage
Detect
R
S
Q
Q
Delay
Line
LTH
HTH
V
LO
V
HI
MIC2779
V
DD
* Pinout and polarity vary by device type.
See ordering information table.
/RST*
One Shot
Trip Points
Battery voltage is monitored by a comparator via a voltage
divider network. The divided voltage is compared to an
internal reference voltage. When the voltage at the LTH input
pin drops below the internal reference voltage, the output is
asserted. At this point, the voltage at HTH is assumed to be
below the reference voltage.
Delay
At power-on or when the battery is replaced or recharged,
and the voltage at HTH exceeds the reference voltage, the
output is deasserted after a minimum delay of 140ms.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2779H-1BM5 TR | 功能描述:IC SUPERVISOR ADJ HYSTER SOT23-5 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開(kāi)路漏極或開(kāi)路集電極 復(fù)位:低有效 復(fù)位超時(shí):標(biāo)準(zhǔn)傳輸延遲為 60 µs 電壓 - 閥值:3V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:Digi-Reel® 其它名稱(chēng):LM8364BALMF30DKR |
| MIC2779H-1BM5TR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel 制造商:RF Micro Devices Inc 功能描述: |
| MIC2779H-1YM5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2779H-1YM5 TR | 功能描述:監(jiān)控電路 V-Supervisor w/Adj. Hysteresis, Active-High Ouput, 1% Accuracy (Lead Free) 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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 |
| MIC2779H-1YM5-TR | 功能描述:Supervisor Push-Pull, Totem Pole 2 Channel SOT-23-5 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 類(lèi)型:多壓監(jiān)控器 受監(jiān)控電壓數(shù):2 輸出:推挽式，圖騰柱 復(fù)位:高有效 復(fù)位超時(shí):最小為 140 ms 電壓 - 閾值:可調(diào)節(jié)/可選擇 工作溫度:-40°C ~ 85°C（TA） 安裝類(lèi)型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商器件封裝:SOT-23-5 標(biāo)準(zhǔn)包裝:1 |
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