Epson Power Supply S1F70000 User Manual
Page 91
S1F76640 Series
2–48
EPSON
S1F70000 Series
Technical Manual
Electrical Characteristics
Unless otherwise specified, Ta=–40˚C to +85˚C
GND=0V, V
DD
=5V
Parameter
Symbol
Specification Value
Unit
Conditions
Measurement
Min.
Typ.
Max.
Circuit
Input supply voltage
V
DD
1.8
—
5.5
V
—
—
Output voltage
V
O
—
—
22
V
—
—
V
REG
V
RV
—
22
V
R=
∞
, R
RV
=1M
Ω
, V
O
=22V
2
Stabilization circuit
V
O
V
RV
+2.1
—
22
V
—
—
operating voltage
Step-up circuit current
I
OPR1
—
60
100
µ
A
R
L
=
∞
, R
OSC
=1M
Ω
1
consumption (V
DD
system)
Step-up circuit current
I
OPR2
—
12
25
µ
A
R
L
=
∞
, R
OSC
=1M
Ω
,
2
consumption (VRI system)
V
O
=20V
Static current
I Q
—
—
2
µ
A
TC2=TC1=V
O
,RI=
∞
1
Oscillation frequency
f
OSC
16
20
24
kHz
R
OSC
=1M
Ω
1
Output impedance
R
O
—
250
350
Ω
I
O
=10mA
1
Step-up power conversion
Peff
90
95
—
%
I
O
=5mA
1
efficiency (Note 2)
Stabilized output
∆
V
REG
—
0.2
—
%/V
10V<V
O
<20V,V
REG
=10V
2
voltage fluctuation
∆
V
O
⋅
V
REG
R
L
=
∞
, Ta=25˚C
Stabilized output load
∆
V
REG
—
5.0
—
Ω
V
O
=20V,V
REG
=15V
2
fluctuation (Note 3)
∆
I
O
Ta=25˚C,0<I
O
<10mA
TC1=V
O
,TC2=GND
Stabilized output saturation
R
SAT
—
12
—
Ω
R
SAT
=
∆
(V
O
-V
REG
)/
∆
I
O
2
resistance (Note 4)
0<I
O
<10mA,RV=V
O
Ta=25˚C
Reference voltage
V
RV0
2.20
3.00
3.80
V
TC2=GND,TC1=V
O
,Ta=25˚C
2
V
RV1
2.30
2.80
3.30
V
TC2=TC1=GND,Ta=25˚C
V
RV2
1.70
2.00
2.30
V
TC2=V
O
,TC1=GND,Ta=25˚C
Temperature gradient
C
T0
–0.45
–0.27
–0.10
%/˚C
V
DD
=5V,V
O
=20V
2
C
T1
–0.60
–0.42
–0.25
%/˚C
(Note 5)
C
T2
–0.70
–0.55
–0.40
%/˚C
Input leak current
I
LKI
—
—
2
µ
A
P
OFF
,TC1,TC2,OSC1,RV pins
3