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參數(shù)資料
| 型號： | RV5VE001C-E2 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | MULTI-POWER SUPPLY |
| 中文描述： | QUAD OUTPUT, FIXED POSITIVE LDO REGULATOR, PDSO16 |
| 封裝： | 0.65 MM PITCH, SSOP-16 |
| 文件頁數(shù)： | 20/49頁 |
| 文件大?。?/td> | 321K |
| 代理商： | RV5VE001C-E2 |
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19
Detector 2
C
D
Current Source
V
Ra
Rb
Rc
Tr.1
Tr.2
Rb
Output Capacitor
GND
V
DD
RESET
V
SEN2
+
–
Operation Diagram
A
B
Minimum Operating Voltage
GND
GND
Output Voltage
Step
1
2
3
4
5
Delay Time
Detector Threshold Hysteresis
Released Voltage +V
DET
Detected Voltage –V
DET
I
.
Rb + Rc
Ra + Rb + Rc
· V
DD
II
.
Rb
Ra + Rb
· V
DD
Step 1. Output Voltage is equal to Pull-up Voltage.
Step 2. When Input Voltage (V
SEN
2
) reaches the state of Vref
≥
V
SEN
2
· (Rb+Rc)/(Ra+Rb+Rc)at Point A (Detected Voltage –V
DET
), the output of Compara-
tor is reversed, so that Output Voltage becomes GND. Discharging is performed from C
D
pin connected to External Capacitor. No delay time is
generated.
Step 3. Output Voltage becomes indefinite when Power Source Voltage (V
DD
) is smaller than Minimum Operating Voltage. When the output is pulled-
up,V
DD
is output.
Step 4. Output Voltage becomes equal to GND.
Step 5. When Input Voltage (V
SEN
2
) reaches the state of Vref
≤
V
SEN
2
· Rb/(Ra +Rb) at Point B (Released Voltage +V
DET
), the output of Comparator is reversed, and
the External Capacitor is charged through C
D
pin,so that Output Voltage becomes equal to Pulled-up Voltage after a delay timeT
D
(= 0.69
×
10
6
×
C
D
).
Step of Operation
The following descriptions deal with V
DD
pin and V
SEN
2
pin as connected each other, but Detector 2 can be detect-
ed the different voltage from V
DD
through V
SEN
2
pin.
RV5VE0
×××
Step
Step 1
Step 2
Step 3
Step 4
Step 5
Comparato (+) Pin
Input Voltage
I
II
II
II
I
Comparator Output
H
L
L
L
H
Tr. 1
OFF
ON
ON
ON
OFF
Output Tr.
Nch
OFF
ON
Indefinite
ON
OFF
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