Epson Power Supply IC S1F70000 Technical Manual page 32

Recommended Operating Conditions
Parameter
Step-up start operation
Step-up stop voltage
Output load resistance
Output load current
Oscillation frequency
External resistor for
oscillation
Step-up capacitor
Note 1
All voltages are based on the GND being 0V.
Note 2
The figure below shows the recommended circuit for operation with low voltages (V
* (DI (VF (IF=1mA) is recommended to be not more than 0.6V.)
Note 3
R varies with input voltage. See Characteristics Graph (15).
Lmin
S1F70000 Series
Technical Manual
Rating
Symbol
Min.
V 1.5
STA1
V 2.2
STA2
V —
STP
R
Lmin
R
L
See note 3.
I —
O
f 10
OSC
R 680
OSC
C , C 3.3
1 2
1
P
OFF
2
GND
3
OSC1
4
OSC2
Recommended Circuit
EPSON
Unit
Max.
R
— V C
See note 2.
— V R
1.5 V R
—
30 mA
30 kHz
2000 k
— F
R
L
8
V
O
7
CAP1+
+
C
1
+
–
6
CAP1–
–
C
2
5
V
DD
S1F76620 Series
(Ta = –40 to +85 C)
Remarks
= 1M
OSC
10 F C /C 1/20
2 L 2
= 1M
OSC
= 1M
OSC
—
—
—
—
—
= 1.5 to 2.2V):
DD
C
L
*D
1
1–15