SCI7661 Series
2–10
EPSON
SCI7000 Series
Technical Manual
0
5
10
15
20
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Ta = 25
°
C
V
O
= –5V
V
O
= –10V
V
O
= –15V
I
O
[mA]
|V
REG
-V
O
| [V]
50
0
–50
–40
–20
0
20
40
60
80
100
CT0
Ta [
°
C]
100
×
|V
REG
(
°
C)|-|V
REG
(25
°
C)|/|V
REG
(25
°
C)| [%]
CT1
CT2
Regulator voltage vs. Output current
Regulator output stability ratio vs.
Ambient temperature
Temperature Gradient Control
The SCI7661C
0B
offers a choice of three temperature
gradients which can be used to adjust the voltage regu-
lator output in applications such as power supplies for
driving LCDs.
Notes
1.
The definition of LOW for POFF differs from that for TC1 and TC2.
2.
The temperature gradient affects the voltage between V
DD
and V
REG
.
POFF
1 (V
DD
)
1
1
1
0 (V
1
)
0
0
0
TC2
See note 1.
LOW (V
O
)
LOW
HIGH (V
DD
)
HIGH
LOW
LOW
HIGH
HIGH
TC1
LOW (V
O
)
HIGH (V
DD
)
LOW
HIGH
LOW
HIGH
LOW
HIGH
–0.4
–0.1
–0.6
–0.6
–
–
–
–
Temperature
gradient
(%/˚C)
See note 2.
Voltage
regulator
output
RC osciliator
Remarks
ON
ON
ON
ON
OFF
(high impedance)
OFF
(high impedance)
OFF
(high impedance)
OFF
(high impedance)
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
Serial connection
Multiplier
operational
