NCP3064B Ver la hoja de datos (PDF) - ON Semiconductor

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Fabricante

NCP3064B

Inverting Converter, Switching Regulator - Buck Boost, ON/OFF Function 1.5 A

ON Semiconductor 

NCP3064, NCP3064B, NCV3064

350

300

250

200

150

100

50

0

0 1 2 3 4 5 6 7 8 9 1011 12131415161718192021

CT, CAPACITANCE (nF)

Figure 5. Oscilator Frequency vs. Timing

Capacitor CT

150

CT = 2.2 nF

145 TJ = 25°C

140

135

130

125

120

0

5

10 15 20 25 30 35 40

VCC, SUPPLY VOLTAGE (V)

Figure 6. Oscillator Frequency vs. Supply

Voltage

2.3

2.2

2.1

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

0.9

−40

1A

0.75 A

0.5 A

ICE = 0.25 A

−20 0 20 40

1.25 A

60 80

100 120 140

TJ, JUNCTION TEMPERATURE (°C)

Figure 7. Emitter Follower Configuration Output

Darlington Switch Voltage Drop vs. Temperature

1.3

1.2

0.75 A

1A

1.1

1.0

0.9

0.5 A

0.8

0.7

ICE = 0.25 A

1.25 A

0.6

−40 −20 0 20 40 60 80 100 120 140

TJ, JUNCTION TEMPERATURE (°C)

Figure 8. Common Emmitter Configuration Outp

Darlington Switch Voltage Drop vs. Temperatur

1.29

1.27

1.25

1.23

1.21

1.19

−40 −20 0

20 40 60 80 100 120 140

TJ, JUNCTION TEMPERATURE (°C)

Figure 9. Comparator Threshold Voltage vs.

Temperature

1.6

1.5

1.4

1.3

1.2

1.1

1

−40 −20 0

20 40 60 80 100 120 140

TJ, JUNCTION TEMPERATURE (°C)

Figure 10. ON/OFF Comparator Threshold

Voltage vs. Temperature

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