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參數(shù)資料
| 型號： | NCP1521BMUTBG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 MHz, 600 mA Step−Down DC−DC Converter |
| 中文描述： | 1.2 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 2 MM, 0.65 MM PITCH, LEAD FREE, UDFN-6 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大小： | 226K |
| 代理商： | NCP1521BMUTBG |
NCP1521B
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
= 1.2 V, unless otherwise noted.)
Rating
Pin
Symbol
Min
Typ
Max
Unit
TSOP
UDFN
VIN PIN
Input Voltage Range
1
3
V
IN
2.7
5.5
V
Quiescent Current, PFM No Switching
1
3
I
q ON
30
45
A
Standby Current, EN Low
1
3
I
q OFF
0.2
1.5
A
Under Voltage Lockout (V
IN
Falling)
1
3
V
UVLO
2.2
2.4
2.55
V
EN PIN
Positive going Input High Voltage Threshold, EN0 Signal
3
1
V
IH
1.2
V
Negative going Input High Voltage Threshold, EN0 Signal
3
1
V
IL
0.4
V
EN High Input Current, EN = 3.6 V
3
1
I
ENH
2.0
A
OUTPUT
Output Voltage Accuracy (Note 6)
Ambient Temperature
Overtemperature Range
V
OUT
3.0
1.0
2.0
3.0
%
Minimum Output Voltage
V
OUT
0.9
V
Maximum Output Voltage
V
OUT
3.3
V
Output Voltage load regulation Overtemperature
I
OUT
= 100 mA to 600 mA
V
OUT
0.0005
%/mA
Load Transient Response, Rise/Falltime 1 s
10 mA to 100 mA Load Step
200 mA to 600 mA Load Step
V
OUT
35
80
mV
Output Voltage Line Regulation, I
OUT
= 100 mA,
V
IN
= 2.7 V to 5.5 V
V
OUT
0.05
%
Line Transient Response, I
OUT
= 100 mA,
3.6 V to 3.0 V Line Step (Falltime=50 s)
V
OUT
6
mV
PP
Output Voltage Ripple, I
OUT
= 300 mA (PWM Mode)
V
OUT
2.0
mV
Output Voltage Ripple, I
OUT
= 0 mA (PFM Mode)
V
OUT
8.0
mV
Peak Inductor Current
5
5
I
LIM
1200
mA
Oscillator Frequency
5
5
F
OSC
1.3
1.5
1.8
MHz
Duty Cycle
5
5
100
%
Soft
Start Time
T
START
320
500
s
Thermal Shutdown Threshold
T
SD
160
°
C
Thermal Shutdown Hysteresis
T
SDH
25
°
C
POWER SWITCHES
P
Channel On
Resistance
RLxH
400
m
N
Channel On
Resistance
RLxL
400
m
P
Channel Leakage Current
I
LeakH
0.05
A
N
Channel Leakage Current
I
LeakL
0.01
A
6. The overall output voltage tolerance depends upon the accuracy of the external resistor (R1, R2).
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