參數(shù)資料
型號: S-8338ACAA-T8T1
元件分類: 穩(wěn)壓器
英文描述: 0.16 A SWITCHING CONTROLLER, 1133 kHz SWITCHING FREQ-MAX, PDSO8
封裝: TSSOP-8
文件頁數(shù): 19/49頁
文件大?。?/td> 554K
代理商: S-8338ACAA-T8T1
STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLERS
S-8337/8338 Series
Rev.2.1_01
26
Seiko Instruments Inc.
Example of Major Power Supply Dependence Characteristics (Ta
= 25°C)
ISS1 vs. VIN
1200
1000
800
600
400
200
0
1
2
3
4
5
6
7
VIN [V]
ISS1
[
A]
fOSC
= 1133 kHz
(ROSC
= 120 k)
fOSC
= 700 kHz
(ROSC
= 200 k)
fOSC
= 286 kHz
(ROSC
= 510 k)
ISSS vs. VIN
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
ISSS
[
A]
fOSC
= 700 kHz (ROSC = 200 k)
01
2
3
4
5
6
7
VIN [V]
–200
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
IEXTH
[mA]
IEXTH vs. VIN
0
1
2
3
4
5
6
7
VIN [V]
fOSC
= 700 kHz, MaxDuty = 77% (ROSC= 200 k, RDuty= 300 k)
200
180
160
140
120
100
80
60
40
20
0
IEXTL
[mA]
IEXTL vs. VIN
fOSC
= 700 kHz, MaxDuty = 77% (ROSC= 200 k, RDuty= 300 k)
01
2
3
4
5
6
7
VIN [V]
0.10
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
IFB
[
A]
IFB vs. VIN
0
1
2
3
4
5
6
7
VIN [V]
fOSC vs. VIN
1400
1200
1000
800
600
400
200
0
fOSC
[kHz]
01
2
3
4
5
6
7
VIN [V]
fOSC
= 1133 kHz (ROSC = 120 k)
fOSC
= 700 kHz (ROSC = 200 k)
fOSC
= 286 kHz (ROSC = 510 k)
100
90
80
70
60
50
40
30
20
10
0
MaxDuty
[%]
MaxDuty vs. VIN
0
1
2
3
4
5
6
7
VIN [V]
MaxDuty
= 88.5%
MaxDuty
= 47%
MaxDuty
= 77%
(ROSC
= 200 k, RDuty= 100 k) (ROSC= 200 k, RDuty= 300 k)
(ROSC
= 200 k, RDuty= 820 k)
tSS vs. VIN
25.0
20.0
15.0
10.0
5.0
0
tSS
[ms]
01
2
3
4
5
6
7
VIN [V]
tSS
= 10 ms
tSS
= 20 ms
相關(guān)PDF資料
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