S-8353 Seiko Instruments, S-8353 Datasheet - Page 28

• 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
(12) Soft Start Time (t
(13) Operation Start Voltage (V
(15) Output Voltage (V
3.40
3.35
3.30
3.25
3.20
8
6
4
2
0
1.2
1.0
0.8
0.6
0.4
0.2
−40 −20 0
−40 −20
0
−40 −20
0
0
Ta [°C]
20
Ta [°C]
20 40
Ta [°C]
SS
20 40
OUT
) vs. Temperature (Ta)
40 60 80 100
) vs. Temperature (Ta)
f
OSC
f
ST1
f
OSC
OSC
) vs. Temperature (Ta)
60
= 250 kHz
60 80 100
= 50 kHz
= 50 kHz
80 100
Seiko Instruments Inc.
(14) Oscillation Start Voltage (V
3.40
3.35
3.30
3.25
3.20
−40 −20 0
1.2
1.0
0.8
0.6
0.4
0.2
8
6
4
2
0
−40 −20 0
0
−40 −20
0
Ta [°C]
20 40
Ta [°C]
20 40
ST2
Ta [°C]
20
) vs. Temperature (Ta)
f
f
40 60 80 100
f
OSC
OSC
OSC
60 80 100
= 250 kHz
= 250 kHz
60 80 100
= 250 kHz
Rev.1.4
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