S-8541 Seiko Instruments, S-8541 Datasheet - Page 32

• Manufacturer Part Number: S-8541
• Description: (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
• Manufacturer: Seiko Instruments

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32
STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8540/8541 Series
2. Ripple Voltage (V
2. 1 S-8540A33FN
2. 3 S-8540A18FN
2. 5 S-8540C33FN
2. 7 S-8540C18FN
100
80
60
40
20
100
100
100
0
80
60
40
20
80
60
40
20
80
60
40
20
0
0
0
1
1
1
1
(1.8 V, 600 kHz, PWM control)
10
10
(3.3 V, 600 kHz, PWM control)
10
(3.3 V, 600 kHz, PWM control)
10
(1.8 V, 300 kHz, PWM control)
I
OUT
rip
I
OUT
I
V
OUT
I
) − Output Current (I
OUT
IN
V
(mA)
7.2 V
=2.5 V
IN
(mA)
V
(mA)
=2.5 V
(mA)
IN
=2.5 V
100
100
100
5.0 V
3.6 V
100
3.6 V
3.6 V
V
IN
5.0 V
=4.0 V
5.0 V
5.0 V
1000
1000
Seiko Instruments Inc.
1000
OUT
1000
) Characteristics
2. 2 S-8541A33FN
2. 4 S-8541A18FN
2. 6 S-8541C33FN
2. 8 S-8541C18FN
100
80
60
40
20
100
100
100
0
80
60
40
20
80
60
40
20
80
60
40
20
0
0
0
1
1
1
1
V
IN
=4.0 V
(1.8 V, 600 kHz, PWM/PFM control)
(3.3 V, 600 kHz, PWM/PFM control)
(3.3 V, 600 kHz, PWM/PFM control)
(1.8 V, 300 kHz, PWM/PFM control)
V
IN
10
10
=2.5 V
10
10
I
OUT
I
OUT
I
V
I
OUT
5.0 V
OUT
IN
V
(mA)
=2.5 V
IN
(mA)
(mA)
=2.5 V
(mA)
3.6 V
100
100
100
100
7.2 V
3.6 V
5.0 V
3.6 V
Rev.3.2
5.0 V
5.0 V
1000
1000
1000
1000
_00