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S-8533A27AFT-TB-U
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8533 Series
Rev.3.0
_00
Seiko Instruments Inc.
16
Characteristics (Typical Data)
1.
Examples of Major Characteristics
(1)
Current Consumption 1 (I
SS1
) vs
. Input Voltage (V
IN
) (2)
Oscillati
on Frequency (f
OSC
) vs
. Input Voltage (V
IN
)
2
4
6
8
10
12
14
Ta
=
25
°
C
Ta
= −
40
°
C
Ta
=
85
°
C
I
SS1
(
μ
A)
V
IN
(V)
100
90
80
70
60
50
40
30
20
10
0
16
2
4
6
8
10
12
14
f
OSC
(kHz)
V
IN
(V)
360
340
320
300
280
260
240
16
Ta
=
25
°
C
Ta
= −
40
°
C
Ta
=
85
°
C
(3)
PDRV Pin Output Current “H” (I
PDRVH
) vs
.
Input Voltage (V
IN
)
(4)
PDRV Pin Output Current “L” (I
PDRVL
) vs
.
Input Voltage (V
IN
)
2 4
6
8
10
12
14
I
PDRVH
(mA)
V
IN
(V)
70
60
50
40
30
20
10
0
16
Ta
=
8
5
°
C
Ta
=
−
40
°
C
Ta
=
2
5
°
C
2
4
6
8
10 12
14
I
PDRVL
(mA)
V
IN
(V)
70
60
50
40
30
20
10
0
16
Ta
=
−
40
°
C
Ta
=
2
5
°
C
Ta
=
8
5
°
C
(5)
NDRV Pin Output Current “H” (I
NDRVH
) vs
.
Input Voltage (V
IN
)
(6)
NDRV Pin Output Current “L” (I
NDRVL
) vs
.
Input Voltage (V
IN
)
2 4
6
8
10
12
14
I
NDRVH
(mA)
V
IN
(V)
70
60
50
40
30
20
10
0
16
Ta
=
8
5
°
C
Ta
=
2
5
°
C
Ta
=
−
40
°
C
2
4
6
8
10 12
14
I
NDRVL
(mA)
V
IN
(V)
120
100
80
60
40
20
0
16
Ta
=
−
40
°
C
Ta
=
2
5
°
C
Ta
=
8
5
°
C
(7)
ON/OFF Pin Input Voltage “H” (V
SH
) vs
.
Input Voltage (V
IN
)
(8)
ON/OFF Pin Input Voltage “L” (V
SL
) vs
.
Input Voltage (V
IN
)
2
4 6 8
10
12
14
V
SH
(V)
V
IN
(V)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
16
Ta
=
8
5
°
C
Ta
=
2
5
°
C
Ta
=
−
40
°
C
2
4
6
8
10 12
14
V
SL
(V)
V
IN
(V)
1.7
1.5
1.3
1.1
0.9
0.7
0.5
0.3
16
Ta
=
−
40
°
C
Ta
=
2
5
°
C
Ta
=
8
5
°
C
STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
Rev.3.0
_00
S-8533 Series
Seiko Instruments Inc.
17
(9)
Soft-Start Time (t
SS
) vs
. Input Voltage (V
IN
)
2 4 6 8
10
12
14
t
SS
(ms)
V
IN
(V)
16
14
12
10
8
6
4
2
0
16
Ta
=
8
5
°
C
Ta
=
2
5
°
C
Ta
=
−
40
°
C
(10)
Outpu
t Voltage (V
OUT
) vs
. Input Voltage (V
IN
)
(1.5 V : S-8533A15A
FT)
(11)
Outpu
t Voltage (V
OUT
) vs
. Input Voltage (V
IN
)
(3.3 V : S-8533A33A
FT)
2 4 6 8
10
12
14
V
OUT
(V)
V
IN
(V)
1.53
1.52
1.51
1.50
1.49
1.48
1.47
16
I
OUT
= 100 mA
I
OUT
= 0.1 mA
I
OUT
= 400 mA
2
4
6
8
10 12 14
V
OUT
(V)
V
IN
(V)
3.37
3.35
3.33
3.31
3.29
3.27
3.25
3.23
16
I
OUT
= 0.1 mA
I
OUT
= 100 mA
I
OUT
= 400 mA
(12)
Outpu
t Voltage (V
OUT
) vs
. Input Voltage (V
IN
)
(5.0 V : S-8533A50A
FT)
2 4 6 8
10
12
14
V
OUT
(V)
V
IN
(V)
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
16
I
OUT
= 100 mA
I
OUT
= 0.1 mA
I
OUT
= 400 mA
STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8533 Series
Rev.3.0
_00
Seiko Instruments Inc.
18
2.
Examples of Transient Response Characteristics
(1) Pow
er-on
(V
IN
: 0 V
→
2.7 V or 5.0 V or 7.5 V, 0 V
→
9.0 V, I
OUT
: 10 mA
)
S-8533A15A
FT (V
IN
: 0 V
→
2.7 V)
S-8533A15A
FT (V
IN
: 0 V
→
9.0 V)
t (2 ms/div)
10 V
0 V
Input voltage
(2.5 V/div)
Output voltage
(1 V/div)
3 V
0 V
t (2 ms/di
v)
10 V
0 V
Input volt
age
(2.5 V/div)
Output voltage
(1 V/div)
3 V
0 V
S-8533A33A
FT (V
IN
: 0 V
→
5.0 V)
S-8533A33A
FT (V
IN
: 0 V
→
9.0 V)
t (2 ms/div
)
10 V
0 V
Input voltage
(2.5 V/div)
Output voltage
(1 V/div)
3 V
0 V
t (2 ms
/div)
10 V
0 V
Input voltage
(2.5 V/div)
Output voltage
(1 V/div)
3 V
0 V
S-8533A50A
FT (V
IN
: 0 V
→
7.5 V)
S-8533A50A
FT (V
IN
: 0 V
→
9.0 V)
t (2 ms/div)
10 V
0 V
Input volt
age
(2.5 V/div)
Output voltage
(1.5 V/div)
4.5 V
0 V
t (2 ms/div)
10 V
0 V
Input volta
ge
(2.5 V/div)
Output voltage
(1.5 V/div)
4.5 V
0 V
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
S-8533A27AFT-TB-U
Mfr. #:
Buy S-8533A27AFT-TB-U
Manufacturer:
ABLIC
Description:
Switching Controllers SYNC PWM CTRL STPDWN CTRLLR
Lifecycle:
New from this manufacturer.
Delivery:
DHL
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