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參數(shù)資料
| 型號(hào)： | MIC2778-1BM5 |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | Voltage Monitor with Adjustable Hysteresis Preliminary Information |
| 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> | 65K |
| 代理商： | MIC2778-1BM5 |
MIC2778
Micrel
MIC2778
4
October 1999
Functional Description
The MIC2778 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 for a minimum of
140ms and then sends a reset signal to a microprocessor or
other downstream component.
Voltage Low Output
The voltage-low output (RST) is an active-low, open-drain
output which sinks current when the MIC2778 detects a low
input voltage.
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
MIC2778
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
pulls low. 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 goes high 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 |
|---|---|
| MIC2778-1BM5 TR | 功能描述:IC SUPERVISOR ADJ HYSTER SOT23-5 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(jiǎn)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: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:LM8364BALMF30DKR |
| MIC2778-1YM5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2778-1YM5 TR | 功能描述:監(jiān)控電路 V-Supervisor w/Adj. Hysteresis, Open-Drain 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 |
| MIC2778-1YM5-TR | 功能描述:Supervisor Open Drain or Open Collector 1 Channel SOT-23-5 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 受監(jiān)控電壓數(shù):1 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 - 閾值:可調(diào)節(jié)/可選擇 工作溫度:-40°C ~ 85°C（TA） 安裝類型: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 |
| MIC2778-2BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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