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NCP1521 Datasheet(PDF) 6 Page - ON Semiconductor

Part No. NCP1521
Description  1.5 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage Step−Down Converter
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1521 Datasheet(HTML) 6 Page - ON Semiconductor

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NCP1521
http://onsemi.com
6
Figure 13. Soft Start Time (VIN = 3.6 V)
Figure 14. Frequency vs. Input Voltage
Figure 15. Frequency vs. Temperature
Figure 16. Load Regulation
Figure 17. Output Voltage vs. Enable Input Pin
Voltage
Figure 18. PFM/PWM Threshold vs. Input
Voltage
0
IOUT, OUTPUT CURRENT (mA)
3.0
1.0
−3.0
100
200
300
400
500
700
−1.0
−2.0
0.5
0
0.2
0.4
0.6
0.8
1.0
VIN, ENABLE INPUT VOLTAGE (V)
0.0
1.4
1.5
1.0
2.0
VIN, INPUT VOLTAGE (V)
1.3
1.4
1.5
1.6
1.7
1.8
2.7
3.2
3.7
4.2
4.7
5.7
5.2
2.0
0.0
2.7
3.2
3.7
4.2
4.7
5.2
VIN, INPUT VOLTAGE (V)
5.7
IOUT = 300 mA
IOUT = 600 mA
TEMPERATURE (
°C)
1.2
1.3
1.4
1.5
1.6
1.7
−40
−20
0
20
40
100
1.8
60
VIN = 5.5 V
IOUT = 300 mA
80
VIN = 3.6 V
1.5
−2.5
−0.5
−1.5
2.5
0.5
600
VOUT = 3.3 V
VOUT = 1.8 V
VOUT = 0.9 V
1.2
VOUT = 1.8 V
TA = 25°C
EN
2 V/Div
VOUT
500 mV/Div
100
ms/Div
0
10
20
30
40
50
60
70
80
90
100


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