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參數資料
| 型號： | 935269491115 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.3 A SWITCHING REGULATOR, 57.5 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | 1.50 MM, PLASTIC, MO-178, SOT-25, SOT-23, SOP-5 |
| 文件頁數： | 16/21頁 |
| 文件大小： | 333K |
| 代理商： | 935269491115 |
Philips Semiconductors
Product data
SA57254-XX
CMOS switching regulator (PWM controlled)
2001 Aug 01
4
ELECTRICAL CHARACTERISTICS
Tamb = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
Part #
MIN.
TYP.
MAX.
UNIT
VIN
input voltage
–
9.0
V
VST1
operating start voltage
IOUT = 1.0 mA
–
0.9
V
VST2
oscillator start voltage
–
0.8
V
VHLD
operation hold voltage
IOUT = 1.0 mA
–
0.7
–
V
ISS1
consumption current 1
VOUT = output voltage × 0.95
-20
–
11.6
19.4
A
-25
–
14.3
23.9
A
-28
–
16.1
26.8
A
-30
–
17.2
28.7
A
-33
–
19.1
31.8
A
-36
–
22.4
37.3
A
-50
–
38.5
64.1
A
ISS2
consumption current 2
VOUT = output voltage + 0.5 V
-20
–
3.1
6.2
A
-25
–
3.2
6.3
A
-28
–
3.2
6.4
A
-30
–
3.2
6.4
A
-33
–
3.3
6.5
A
-36
–
3.3
6.5
A
-50
–
3.5
6.9
A
RDS(ON)
internal switch-on resistance
VSW = 0.4 V
-20
–
5.6
8.9
()
-25
–
4.1
6.5
-28
–
4.1
6.5
-30
–
3.2
5.1
-33
–
3.2
5.1
-36
–
3.2
5.1
-50
–
2.2
3.5
ISWO
switching transistor leak
current
VOUT = VSW = 9 V
–
1.0
A
VOUT2
load ripple voltage
IOUT = 10 mA ≈ IOUT (following) × 1.25
–
30
60
mV
VOUT/Tamb output voltage temperature
coefficient
–40
°C ≤ Tamb ≤ +85 °C
–
±50
–
ppm/
°C
fOSC
oscillator frequency
VOUT = output voltage × 0.95
–
42.5
50
57.5
kHz
MaxDuty
maximum duty ratio
VOUT = output voltage × 0.95
–
75
83
90
%
tSS
soft start time
IOUT = 1.0 mA
–
3.0
6.0
12
ms
EFFI
efficiency
-20
–
75
–
%
-25
–
79
–
%
-28
–
79
–
%
-30
–
83
–
%
-33
–
83
–
%
-36
–
83
–
%
-50
–
87
–
%
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