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參數(shù)資料
| 型號： | 935269489115 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | 1.50 MM, PLASTIC, MO-178, SOT-25, SOT-23, SOP-5 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大小： | 298K |
| 代理商： | 935269489115 |
Philips Semiconductors
Product data
SA57251-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
–
0.7
–
0.8
V
VHLD
operation hold voltage
IOUT = 1.0 mA
–
0.7
–
V
ISS1
consumption current 1
VOUT = output voltage × 0.95
(ON/OFF i ON)
-20
–
14.5
24.1
A
(ON/OFF is ON)
-25
–
17.8
29.7
A
-28
–
20.0
33.3
A
-30
–
21.4
35.7
A
-33
–
23.7
39.5
A
-36
–
28.8
48.0
A
-50
–
54.0
89.9
A
ISS2
consumption current 2
VOUT = output voltage + 0.5 V
(ON/OFF i OFF)
-20
–
3.8
7.6
A
(ON/OFF is OFF)
-25
–
3.9
7.7
A
-28
–
3.9
7.8
A
-30
–
3.9
7.8
A
-33
–
4.0
7.9
A
-36
–
4.0
7.9
A
-50
–
4.2
8.3
A
IDRIVEH
DRIVE pin output current
(HIGH)
VDRIVE = VOUT – 0.4 V
-20
–
–1.9
–2.9
mA
(HIGH)
-25
–
–2.7
–4.0
mA
-28
–
–2.7
–4.0
mA
-30
–
–3.5
–5.3
mA
-33
–
–3.5
–5.3
mA
-36
–
–3.5
–5.3
mA
-50
–
–5.3
–8.0
mA
IDRIVEL
DRIVE pin output current
(LOW)
VDRIVE = 0.4 V
-20
–
3.8
5.7
mA
(LOW)
-25
–
5.3
8.0
mA
-28
–
5.3
8.0
mA
-30
–
7.0
10.5
mA
-33
–
7.0
10.5
mA
-36
–
7.0
10.5
mA
-50
–
10.7
16
mA
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
oscillation frequency
VOUT = output voltage × 0.95
–
85
100
115
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
ISS(OFF)
power OFF consumption
current
ON/OFF pin = 0 V
–
0.5
A
VSH
ON/OFF pin voltage
VOUT = output voltage × 0.95
–
0.75
–
V
VSL
ON/OFF pin voltage
VOUT = output voltage × 0.95
–
0.3
V
EFFI
efficiency
-20
–
76
–
%
-25
–
80
–
%
-28
–
80
–
%
-30
–
84
–
%
-33
–
84
–
%
-36
–
84
–
%
-50
–
88
–
%
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