S-8353 Seiko Instruments, S-8353 Datasheet - Page 29

• Manufacturer Part Number: S-8353
• Description: (S-8353 / S-8354) PWM Control Switchable Built-in Transistor Switching Regulator
• Manufacturer: Seiko Instruments

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Rev.1.4
STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
2. Examples of Major Power Supply Dependence Characteristics (Ta = 25 ° C)
(1) Current Consumption 1 (I
(3) Oscillation Frequency (f
(4) Switching Current (I
(5) Output Voltage (V
50
40
30
20
10
3.4
3.3
3.2
3.1
3.0
70
60
50
40
30
0
500
400
300
200
100
0
0
0
0
_00
0
Voltage (V
Power Supply Voltage (V
2
2
2
2
DD
), Current Consumption 2 (I
V
4
V
OUT
4
OUT
V
4
DD
4
V
DD
V
) vs. Power Supply Voltage (V
DD
DD
= 3.3 V, f
[V]
SW
[V]
[V]
[V]
SS1
) vs. Power Supply Voltage (V
6
OSC
6
DD
6
6
) vs. Power Supply
)
) vs. Power Supply Voltage (V
OSC
f
f
OSC
OSC
8
= 50 kHz
8
8
= 50 kHz
= 50 kHz
8
Seiko Instruments Inc.
SS2
10
10
10
10
) vs.
DD
) (V
(2) Current Consumption at Shutdown (I
OUT
DD
= 3.3 V, V
)
Voltage (V
100
80
60
40
20
300
250
200
150
100
3.4
3.3
3.2
3.1
3.0
0
DD
0
)
0
0
IN
= 1.98 V, I
DD
)
2
2
2
OUT
V
OUT
4
= 13.2 mA, V
4
4
V
V
V
= 3.3 V, f
DD
DD
DD
S-8353/8354 Series
[V]
[V]
[V]
6
6
6
SSS
OSC
DD
f
f
OSC
) vs. Power Supply
OSC
Separate Type)
= 250 kHz
8
= 250 kHz
= 250 kHz
8
8
10
10
10
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