S-8520 Seiko Instruments, S-8520 Datasheet - Page 18

• Manufacturer Part Number: S-8520
• Description: (S-8520 / S-8521) PWM Control and PFM Control Step DOwn Switching Regulator Controllers
• Manufacturer: Seiko Instruments

PWM Control & PWM/PFM Control Step-Down Switching Regulator-Controllers
S-8520/8521 Series
(7)
(9)
(11)
T
S-8520/21(Fosc:300 kHz)
SS
18
T
S-8520/21(Fosc:60 kHz)
I
S-8520/21
EXTH
SS
-V
(ms)
T
I
(mA)
-V
EXTH
IN
SS
T
(ms)
-V
IN
SS
IN
10
8
6
4
2
0
−60
−50
−40
−30
−20
−10
25
20
15
10
5
0
2
0
2
2
4
4
4
6
6
6
8
V
8
8
V
IN
V
IN
IN
(V)
(V)
(V)
10
10
10
Seiko Instruments Inc.
12
12
12
Ta=−40
Ta=85
Ta=25
Ta=−40
Ta=25
Ta=85
Ta=−40
Ta=25
Ta=85
14
14
14
16
16
16
(8)
(10)
(12)
T
S-8520/21(Fosc:60 kHz)
T
S-8520/21(Fosc:180 kHz)
I
S-8520/21
PRO
SS
EXTL
T
(ms)
-V
I
(mA)
T
(ms)
PRO
EXTL
-V
-V
SS
IN
IN
IN
30
26
22
18
14
10
25
20
15
10
60
50
40
30
20
10
6
5
0
0
2
2
2
4
4
4
6
6
6
Ta=85
Ta=25
8
8
8
V
V
V
IN
IN
IN
(V)
(V)
(V)
10
10
10
12
12
12
Ta=−40
Ta=−40
Ta=−40
Ta=25
Ta=85
Ta=25
Ta=85
Rev.7.4
14
14
14
16
16
16
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