NCP1521 datasheet(6/17 Pages) ONSEMI | 1.5 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage Step−Down Converter

Nombre de pieza

Descripción

NCP1521

1.5 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage Step−Down Converter ( 17 Page)

ONSEMI

6 page

NCP1521

http://onsemi.com

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

IOUT, OUTPUT CURRENT (mA)

3.0

1.0

−3.0

100

200

300

400

500

700

−1.0

−2.0

0.5

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

100

1.8

VIN = 5.5 V

IOUT = 300 mA

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

2 V/Div

VOUT

500 mV/Div

100

ms/Div

100

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

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