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6.2 Recommended Operating Conditions
Item
Boosting start voltage
Boosting stop voltage
Output load current
Oscillation frequency
External resistor for oscillation
Boosting capacitor
Stabilization-output adjusting resistor
Note 1: All voltages are based on the condition that the V
Note 2: For low-voltage (V
V
I
Fig.6.2.1 Recommended Circuit for Low-voltage Operation (Example of Quadruple Booster Circuit)
S1F76640 Technical Manual (Rev.1.5)
Symbol
VSAT1
VSAT2
VSTP
I
OUT
f
OSC
R
OSC
C1,C2,C3,C4
RRV
= 1.8 to 2.2V) operation, the recommended circuit is as follows:
DD
1
RV
2
V
REG
3
CAP3+
TC1
4
TC2
CAP2+
5
CAP2−
P
OFF
6
V
CAP1+
SS
7
OSC1
CAP1−
8
OSC2
(IF = 1mA) ≤ 0.6V recommended)
(D1 (V
F
6. ELECTRICAL CHARACTERISTICS
Standard value
Min.
Max.
1.8
-
2.2
-
-
1.8
-
20
10
30
680
2000
3.3
-
100
1000
(GND) is equal to 0V.
SS
VRI
16
V
15
OUT
14
+
13
+
C2
−
12
−
C3
+
11
C1
−
10
9
V
DD
EPSON
Unit
Remarks
V
R
=1MΩ, C4≥10μF
OSC
CL/C4≥1/20, Note 2)
V
R
OSC
V
R
OSC
mA
kHz
kΩ
μF
kΩ
D1
C
L
+
C4
−
R
L
=1MΩ
=1MΩ
-
-
-
-
-
9
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