參數(shù)資料
型號(hào)： RN5VD30CA-TL-FA
廠商： RICOH COMPANY LTD
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封裝： PLASTIC, SOT-23, 5 PIN
文件頁(yè)數(shù)： 9/28頁(yè)
文件大?。?/td> 198K
代理商： RN5VD30CA-TL-FA
RN5VD
16
A
B
1
2
3
4
5
Detector Threshold Hysteresis
Released Voltage +VDET
Detected Voltage –VDET
Minimum Operaing Voltage
Delay Time
GND
Supply Voltage
(VDD)
Output Voltage
(OUT)
OPERATION
FIG. 2 Operation Diagram
FIG. 1 Block Diagram
Step 1. Output Voltage is equal to Pull-up Voltage.
Step 2. When Input Voltage (VDD) reaches the state of Vref
≥VDD (Rb+Rc) /(Ra+Rb+Rc) at Point A (Detected Voltage –VDET) , the output of Comparator is
reversed, so that Output Voltage becomes GND. Discharging is performed from CD pin connected to External Capacitor. No delay time is generated.
Step 3.
Output Voltage becomes indefinite when Power Source Voltage(VDD) is smaller than Minimum Operating Voltage. When the output is pulled up, VDD is
output.
Step 4. Output Voltage becomes equal to GND.
Step 5. When Input Voltage (VDD) reaches the state of Vref
≤VDD Rb/(Ra+Rb) at Point B (Released Voltage +VDET) , the output of Comparator is reversed,
and the External Capacitor is charged through CD pin, so that Output Voltage becomes equal to Pulled-up Voltage after a delay time
tD (=0.69
×106×CD) .
Step
Step 1
Step 2
Step 3
Step 4
Step 5
Comparator (–) Pin
Input Voltage
I
II
I
Comparator Output
LH
Indefinite
HL
Tr. 1, 2
OFF
ON
Indefinite
ON
OFF
Output Tr.
Nch
OFF
ON
Indefinite
ON
OFF
Pch
ON
OFF
Indefinite
OFF
ON
I.
Rb + Rc
Ra + Rb + Rc
VDD
II.
Rb
Ra + Rb
VDD
GND
OUT
CD
VDD
Ra
Current Source
Output Capacitor
RD
Rb
Rc
Tr.1
Tr.2
Vref
–
+
Comparator
Schmitt Trigger
Nch
Pch
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RN5VD30CA-TR 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:VOLTAGE DETECTOR WITH OUTPUT DELAY
RN5VD30CC 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:VOLTAGE DETECTOR WITH OUTPUT DELAY
RN5VD30CC-TL 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:VOLTAGE DETECTOR WITH OUTPUT DELAY
RN5VD30CC-TR 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:VOLTAGE DETECTOR WITH OUTPUT DELAY
RN5VD31A 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Voltage Detector
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