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參數資料
| 型號： | NCP1522ASNT1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | 3.0 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage Step−Down Converter |
| 中文描述： | 1.2 A SWITCHING REGULATOR, 3600 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | LEAD FREE, TSOP-5 |
| 文件頁數： | 4/17頁 |
| 文件大小： | 166K |
| 代理商： | NCP1522ASNT1G |
NCP1522
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(Typical values are referenced to T
A
= +25
°
C, Min and Max values are referenced 40
°
C to
+85
°
C ambient temperature, unless otherwise noted, operating conditions V
IN
= 3.6 V, V
OUT
= 1.8 V, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Input Voltage Range
V
IN
2.7
5.5
V
Undervoltage Lockout (V
IN
Falling)
V
UVLO
2.3
2.5
2.6
V
Quiescent Current (PFM No Load)
I
q
60
95
A
Standby Current, EN Low
Istb
0.3
1.2
A
Oscillator Frequency
F
osc
2.400
3.0
3.600
MHz
Peak Inductor Current
I
LIM
1200
mA
Feedback Reference Voltage
V
ref
0.6
V
FB Pin Tolerance
VFBtol
3.0
3.0
%
Reference Voltage Line Regulation
VFB
0.1
%
Output Voltage Accuracy (Note 4)
V
OUT
3%
Vnom
+3%
V
Minimum Output Voltage
V
OUT
0.9
V
Maximum Output Voltage
V
OUT
3.3
V
Output Voltage Line Regulation (V
in
= 2.7–5.5)
Io = 200 mA
V
OUT
0.1
%
Voltage Load Regulation
(IO = 200 mA to 300 mA)
(IO = 200 mA to 600 mA)
V
LOADREG
0.0005
0.001
%/mA
%/mA
Load Transient Response (300 mA to 600 mA Load Step, Trise 1.0 s)
V
OUT
35
mV
Duty Cycle
100
%
PCh OnResistance
RLxH
300
m
NCh OnResistance
RLxL
300
m
PCh Leakage Current
ILeakH
0.05
A
NCh Leakage Current
ILeakL
0.01
A
Enable Pin High
VENH
1.2
V
Enable Pin Low
VENL
0.4
V
EN << H >> Input Current, EN = 3.6 V
IENH
2.0
A
SoftStart Time
T
start
350
500
s
Thermal Shutdown Threshold
T
SD
160
°
C
Thermal Shutdown Hysteresis
T
SDH
25
°
C
4. The overall output voltage tolerance depends upon the accuracy of the external resistor (R1, R2).
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