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參數資料
| 型號： | MB3793-45PF |
| 廠商： | FUJITSU LTD |
| 元件分類： | 電源管理 |
| 英文描述： | Power Voltage Monitoring IC with Watchdog Timer |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | 5.30 X 6.35 MM, 2.25 MM HEIGHT, 1.27 MM PITCH, PLASTIC, SOP-8 |
| 文件頁數： | 4/20頁 |
| 文件大?。?/td> | 192K |
| 代理商： | MB3793-45PF |
4
MB3793
-42/30
I
BLOCK FUNCTIONS
1. Comp. S
Comp. S is a comparator with hysteresis to compare the reference voltage with a voltage (V
S
) that is the result of dividing the power voltage
(V
CC
) by resistors 1 and 2. When V
S
falls below 1.24 V, a reset signal is output. This function enables the MB3793 to detect an abnormality
within 1
μ
s when the power is cut or falls abruptly.
2. Comp. O
Comp. O is a comparator to control the reset signal (RESET) output and compares the threshold voltage with the voltage at the CTP pin for
setting the power-on reset hold time. When the voltage at the CTP pin exceeds the threshold voltage, resetting is canceled.
3. Reset output buffer
Since the reset (RESET) output buffer has CMOS organization, no pull-up resistor is needed.
4. Pulse generator
The pulse generator generates pulses when the voltage at the CK1 and CK2 clock pins changes to High from Low level (positive-edge trigger)
and exceeds the threshold voltage; it sends the clock signal to the watchdog timer.
5. Watchdog timer
The watchdog timer can monitor two clock pulses. Short-circuit the CK1 and CK2 clock pins to monitor a single clock pulse.
6. Inhibition pin
The inhibition (INH) pin forces the watchdog timer on/off. When this pin is High level, the watchdog timer is stopped.
7. Flip-flop circuit
The flip-flop circuit RSFF1 controls charging and discharging of the power-on reset hold time setting capacity (C
TP
). The flip-flop circuit RSFF2
switches the charging accelerator for charging C
TP
during resetting on/off. This circuit only functions during resetting and does not function at
power-on reset.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MB3793-45PF-G-BND-JN-6(E1) | 制造商:Fujitsu 功能描述: |
| MB3793-45PF-G-BND-JN-6E1 | 功能描述:IC PWR VOLT MON WD TIMER 8SOP RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 其它有關文件:STM6717 View All Specifications 標準包裝:1 系列:- 類型:多壓監(jiān)控器 監(jiān)視電壓數目:2 輸出:開路漏極或開路集電極 復位:低有效 復位超時:最小為 600 ms 電壓 - 閥值:1.11V，3.075V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:Digi-Reel® 產品目錄頁面:1194 (CN2011-ZH PDF) 其它名稱:497-7019-6 |
| MB3793-45PF-G-JN-ER-6E1 | 功能描述:IC PWR VOLT MON WD TIMER 8SOP RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:簡單復位/加電復位 監(jiān)視電壓數目:1 輸出:雙向 復位:低有效 復位超時:最小為 140 ms 電壓 - 閥值:4.63V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:TO-253-4，TO-253AA 供應商設備封裝:SOT-143-4 包裝:剪切帶 (CT) 產品目錄頁面:1414 (CN2011-ZH PDF) 其它名稱:MAX6314US46D3+TCT |
| MB3793-45PNF | 制造商:FUJITSU Component Ltd 功能描述:MB3793-45PNF |
| MB3793-45PNF-G-JN-6(E1) | 制造商:Fujitsu 功能描述: |
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