S-8353 Seiko Instruments, S-8353 Datasheet - Page 26

• 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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STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
S-8353/8354 Series
Characteristics (Typical Data)
1. Example of Major Temperature characteristics (Ta = − 40 to + 85 ° C, V
(1) Current Consumption 1 (I
(2) Current Consumption 2 (I
(3) Current Consumption at Shutdown (I
(4) Switching Current (I
500
400
300
200
100
1.0
0.8
0.6
0.4
0.2
50
40
30
20
10
10
0
−40 −20
−40 −20
8
6
4
2
0
0
−40 −20
0
−40 −20 0
0
0
0
SW
20
) vs. Temperature (Ta)
Ta [°C]
20
Ta [°C]
Ta [°C]
Ta [°C]
20 40
20 40
40 60 80 100
40 60
f
f
OSC
f
OSC
f
SS1
SS2
OSC
OSC
60
60 80 100
) vs. Temperature (Ta)
) vs. Temperature (Ta)
= 250 kHz
= 250 kHz
= 50 kHz
= 50 kHz
80 100
80 100
Seiko Instruments Inc.
SSS
) vs. Temperature (Ta)
(5) Switching Transistor Leakage Current (I
10
1.0
0.8
0.6
0.4
0.2
50
40
30
20
10
8
6
4
2
0
−40 −20
−40 −20
0
−40 −20
0
OUT
= 3.3 V)
0
0
0
Ta [°C]
20
Ta [°C]
20 40
Ta [°C]
20
40 60 80 100
40
f
f
OSC
f
OSC
OSC
SWQ
60
60
= 250 kHz
= 250 kHz
) vs. Temperature (Ta)
= 250 kHz
80 100
80 100
Rev.1.4
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