Epson Power Supply S1F70000 User Manual
Page 32
S1F76620 Series
S1F70000 Series
EPSON
1–15
Technical Manual
S1F76620
Series
Recommended Operating Conditions
(Ta = –40 to +85
°
C)
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
DD
= 1.5 to 2.2V):
P
OFF
R
L
C
L
*
D
1
C
1
+
–
+
–
C
2
GND
OSC1
OSC2
*
(DI (VF (IF=1mA) is recommended to be not more than 0.6V.)
V
O
CAP1+
CAP1–
V
DD
1
2
3
4
8
7
6
5
Recommended Circuit
Note 3
R
Lmin
varies with input voltage. See Characteristics Graph (15).
Max.
—
—
1.5
—
30
30
2000
—
Parameter
Step-up start operation
Step-up stop voltage
Output load resistance
Output load current
Oscillation frequency
External resistor for
oscillation
Step-up capacitor
Symbol
V
STA1
V
STA2
V
STP
R
L
I
O
f
OSC
R
OSC
C
1
, C
2
Rating
Min.
1.5
2.2
—
R
Lmin
See note 3.
—
10
680
3.3
Unit
V
V
V
Ω
mA
kHz
k
Ω
µ
F
Remarks
R
OSC
= 1M
Ω
C
2
≥
10
µ
F C
L
/C
2
≥
1/20
See note 2.
R
OSC
= 1M
Ω
R
OSC
= 1M
Ω
—
—
—
—
—