- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄299843 > R3131N47EC-TR (RICOH COMPANY LTD) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 PDF資料下載
參數(shù)資料
| 型號： | R3131N47EC-TR |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | SOT-23, 3 PIN |
| 文件頁數(shù)： | 9/29頁 |
| 文件大?。?/td> | 335K |
| 代理商： | R3131N47EC-TR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
R3130N/R3131N
17
Operation of R3131N Series
VDD
OUT
Pch
Ra
Rb
Nch
GND
Comparator
Vref
-
+
Delay
Circuit
CMOS output type
OUT pin is connected to the drain of
Nch Tr. and Pch Tr. in this IC.
Nch open drain output type: I
OUT pin is connected to the drain of
Nch Tr. in this IC. (OUT pin should be
pulled up to VDD or an external voltage
level.)
Block Diagram
Minimum Operating
Voltage(VDDL)
Tdelay
GND
B
A
1
2
3
4
5
Supply
Voltage
(VDD)
Output
Voltage
(OUT)
Detector Threshold(VDET)
=Released Voltage
Operation Diagram
In the above diagram,
1
Output voltage becomes equal to GND level.
2
When supply voltage is down to the detector threshold level (Point A), Vref >
= VDD× Rb/(Ra+Rb) is true. Then,
output of the comparator is reversed, thus output voltage becomes equal to supply voltage (Nch open drain
output type; equal to pull-up Voltage).
3
When supply voltage is lower than minimum operating voltage, Output of transistor is indefinite, therefore
output is also indefinite.(Nch open drain output type; Output voltage level is equal to pull-up voltage.)
4
Output voltage is equal to supply voltage. (Nch open drain output type; equal to pull-up voltage.)
5
When supply voltage is higher than released voltage (Point B), Vref <
= VDD× Rb/(Ra+Rb) is true. Then output
of the comparator is reversed, thus output voltage becomes equal to GND level after the output delay time.
There is no hysteresis range between detector threshold and released voltage.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R3131N22EC-TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| R3131N45EA-TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| R3131N37EA-TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| R3130N29EC-TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| R3131N27EA-TR-FB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R3131NXXXA/C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Management ICs |
| R3131P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| R3132 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| R3132N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| R3132NP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。