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S8353 Datasheet(PDF) 28 Page - Seiko Instruments Inc

Part # S8353
Description  STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
PDF  49 Pages
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S8353 Datasheet(HTML) 28 Page - Seiko Instruments Inc

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STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
S-8353/8354 Series
Rev.3.0_01
28
(6) Oscillation Frequency (fOSC) vs. Temperature (Ta)
fOSC = 50 kHz
fOSC = 250 kHz
30
40
50
60
70
−40 −20 0
20 40 60 80 100
Ta [
°C]
150
200
250
300
350
−40 −20 0
20 40 60 80 100
Ta [
°C]
(7) Maximum Duty Ratio (MaxDuty) vs. Temperature (Ta)
fOSC = 50 kHz
fOSC = 250 kHz
−40 −20 0 20 40 60 80 100
Ta [
°C]
50
60
70
80
90
100
−40 −20 0
20 40 60 80 100
Ta [
°C]
50
60
70
80
90
100
(8) PWM / PFM Switching Duty Ratio (PFMDuty) vs.
Temperature (Ta) (S-8354 Series)
(9)
OFF
/
ON
Pin Input Voltage “H” (VSH) vs.
Temperature (Ta)
fOSC = 250 kHz
fOSC = 250 kHz
5
10
15
20
25
−40 −20 0
20 40 60 80 100
Ta [
°C]
0
0.2
0.4
0.6
0.8
1.0
−40 −20 0
20 40 60 80 100
Ta [
°C]
(10)
OFF
/
ON
Pin Input Voltage “L” 1 (VSL1) vs.
Temperature (Ta) (S-8354 Series)
(11)
OFF
/
ON
Pin Input Voltage “L” 2 (VSL2) vs.
Temperatuer (Ta)
fOSC = 250 kHz
fOSC = 250 kHz
0
0.2
0.4
0.6
0.8
1.0
−40 −20 0
20 40 60 80 100
Ta [
°C]
0
0.2
0.4
0.6
0.8
1.0
−40 −20 0
20 40 60 80 100
Ta [
°C]



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