s-8460 Seiko Instruments Inc., s-8460 Datasheet - Page 24

• Manufacturer Part Number: s-8460
• Description: Step-up Or Down, Single-coil, Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

2. Output Current (I
24
STEP-UP OR DOWN, SINGLE-COIL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8460
The following shows the actual output current I
conditions (1) to (16) in Table 4 .
(1) S-8460B00AFT (V
(3) S-8460B00AFT (V
(5) S-8460B00AFT (V
(7) S-8460B00AFT (V
100
100
100
100
90
80
70
60
50
90
80
70
60
50
90
80
70
60
50
90
80
70
60
50
1
1
1
1
CPH6401, MA2Q737, CDRH104R/22 μH
CPH3403, MA2Q737, CDRH104R/22 μH
V
V
V
CPH6401, MA2Q737, CDRH104R/10 μH
IN
IN
IN
=2.7V
CPH3403,MA2Q737,CDRH104R/22 μ H
=2.7V
=2.7V
CPH6401,MA2Q737,CDRH104R/22 μ H
CPH6401,MA2Q737,CDRH104R/10 μ H
Si2302DS, D1FH3, CDRH104R/22 μH
3.0V
Si2302DS,D1FH3,CDRH104R/22 μ H
3.0V
10
10
10
OUT
10
OUT
OUT
OUT
OUT
I
3.0V
I
OUT
I
OUT
OUT
I
) vs. Efficiency (η) Characteristics
OUT
= 3.3 V)
= 3.3 V)
= 3.3 V)
= 3.3 V)
4.95V
(mA)
(mA)
(mA)
(mA)
V
IN
4.95V
4.95V
=2.7V
3.0V
100
100
100
100
4.0V
4.95V
3.3V
4.0V
3.3V
3.3V
3.3V
1000
1000
Seiko Instruments Inc.
1000
1000
OUT
vs. efficiency (η) characteristics when the S-8460 is used under
(2) S-8460B00AFT (V
(4) S-8460B00AFT (V
(6) S-8460B00AFT (V
(8) S-8460B00AFT (V
100
100
100
100
90
80
70
60
50
90
80
70
60
50
90
80
70
60
50
90
80
70
60
50
1
1
1
1
V
3.3V
CPH6401, MA2Q737, CDRH104R/47 μH
FTS2001, MA2Q737, CDRH104R/22 μH
3.3V
IN
V
V
CPH6401,MA2Q737,CDRH104R/47 μ H
IN
=2.7V
IN
FTS2001,MA2Q737,CDRH104R/22 μ H
FDN335N, D1FH3, CDRH104R/22 μH
CPH3403, D1FH3, CDRH104R/22 μH
=2.7V
=2.7V
FDN335N,D1FH3,CDRH104R/22 μ H
CPH3403,D1FH3,CDRH104R/22 μ H
3.0V
4.95V
10
10
10
10
OUT
OUT
OUT
OUT
I
I
OUT
I
I
OUT
OUT
OUT
= 3.3 V)
= 3.3 V)
= 3.3 V)
= 3.3 V)
(mA)
(mA)
(mA)
(mA)
3.3V
4.95V
4.0V
4.95V
100
100
100
100
V
3.0V
3.0V
IN
4.95V
=2.7
3.3V
3.0V
4.0V
3.3V
3.3V
1000
1000
1000
1000
Rev.2.1
_00