STEP-UP OR DOWN, SINGLE-COIL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8460
Rev.2.1_00
26
Seiko Instruments Inc.
3. Input Voltage (V
IN
) vs. Efficiency (η) Characteristics
The following shows the actual input voltage (V
IN
) vs. efficiency (η) characteristics when the S-8460 is used under
conditions (17) to (24) in
Table 4.
(17) S-8460B00AFT (V
OUT
= 3.3 V) (18) S-8460B00AFT (V
OUT
= 3.3 V)
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
CPH6401,MA2Q737,CDRH104R/22
μ
H
100m
I
OUT
=50mA
66mA
200mA
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
FTS2001,MA2Q737,CDRH104R/22
μ
H
100mA
I
OUT
=50mA
66mA
200m
(19) S-8460B00AFT (V
OUT
= 3.3 V) (20) S-8460B00AFT (V
OUT
= 3.3 V)
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
CPH3403,MA2Q737,CDRH104R/22
μ
H
100mA
I
OUT
=50mA
66mA
200m
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
CPH3403,D1FH3,CDRH104R/22
μ
H
100mA
I
OUT
=50mA
66mA
200mA
(21) S-8460B00AFT (V
OUT
= 3.3 V) (22) S-8460B00AFT (V
OUT
= 3.3 V)
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
Si2302DS,D1FH3,CDRH104R/22
μ
H
100mA
I
OUT
=50mA
66mA
200m
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
FDN335N,D1FH3,CDRH104R/22
μ
H
100mA
I
OUT
=50mA
66mA
200mA
(23) S-8460B00AFT (V
OUT
= 3.3 V) (24) S-8460B00AFT (V
OUT
= 3.3 V)
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
CPH6401,MA2Q737,CDRH104R/10
μ
H
100mA
I
OUT
=50mA
66mA
200m
50
60
70
80
90
100
2345
V
IN
(V)
効率
(%)
CPH6401,MA2Q737,CDRH104R/47
μ
H
100mA
I
OUT
=50mA
66mA
200mA
Efficiency η (%)
Efficiency η (%)
Efficiency η (%)
Efficiency η (%)
Efficiency η (%)
Efficiency η (%)
Efficiency η (%)
Efficiency η (%)
CPH6401, MA2Q737, CDRH104R/22 μH
FTS2001, MA2Q737, CDRH104R/22 μH
CPH3403, MA2Q737, CDRH104R/22 μH
CPH3403, D1FH3, CDRH104R/22 μH
Si2302DS, D1FH3, CDRH104R/22 μH
CPH6401, MA2Q737, CDRH104R/10 μH
FDN335N, D1FH3, CDRH104R/22 μH
CPH6401, MA2Q737, CDRH104R/47 μH
