SCI7654C0A EPSON [Epson Company], SCI7654C0A Datasheet - Page 6

• Manufacturer Part Number: SCI7654C0A
• Description: DC/DC Converter
• Manufacturer: EPSON [Epson Company]

SCI7654M
6
Mode
Voltage Regulator Circuit
Power Off Control
*1 When the booster circuit is OFF, approximately V
*2 When the regulator is OFF, the V
*3 The mode selected depends on the line connection at the second stage of serial connection.
The circuit receives a voltage from V
a ratio of R1 and R2 external divider resistors. Although the sum of divider resistors is desirable to be minimum
to prevent an interference due to external noise, 100 to 1 megohms are recommended as the current
consumption may be increased by the divider resistors.
The SCI7654 has an automatic power-off function, and can turn on or off each function depending on the external
signals entered in POFF1 and POFF2 pins.
PS1
PS2
PS3
PS4
POFF1
H(V
H
L
L
0A
DD
/C
)
0A
POFF2
L(V
H
H
L
IN
)
Oscillator
RI
REG
OFF
OFF
pin, stabilizes it, and outputs at any voltage. The output is adjustable with
R
ON
ON
1
pin is set to the high-impedance status.
R
2
OFF (*1)
Booster
ON
ON
ON
IN
1
2
3
4
5
6
7
8
+0.6V voltage appears at V
V
V
V
RV
V
FC
TC1
TC2
OUT
RI
REG
DD
Function Status
OFF (*2)
Regulator
POFF1
POFF2
OFF
ON
ON
C2N
C3N
C1N
C2P
C1P
V
IN
16
15
14
13
12
11
10
9
All circuits are turned ON.
All circuits are turned OFF.
Slave side (booster and regulator)
in parallel connection
Master side (for booster only)
in parallel connection; first stage
in serial connection (*3)
OUT
Description
pin.