LM5177 datasheet(19/112 Pages) TI

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6.7 Typical Characteristics (continued)

The following conditions apply (unless otherwise noted): TJ = 25°C; V(VCC2) = 5V

VIN voltage (V)

3,5

3,7

3,9

4,1

4,3

4,5

4,7

4,9

5,1

5,3

5,5

3,3

3,5

3,7

3,9

4,1

4,3

4,5

4,7

4,9

5,1

I(VCC2)=20mA

I(VCC2)=50mA

I(VCC2)=90mA

Figure 6-13. VCC2 LDO Output voltage versus VIN Voltage

V(BIAS) = 0V

BIAS voltage (V)

3,5

3,7

3,9

4,1

4,3

4,5

4,7

4,9

5,1

5,3

5,5

3,3

3,5

3,7

3,9

4,1

4,3

4,5

4,7

4,9

5,1

I(VCC2)=20mA

I(VCC2)=50mA

I(VCC2)=90mA

Figure 6-14. VCC2 LDO Output voltage versus BIAS Voltage

V(VIN) = 2.5V

Te mperature (

C)

10 15 20 25 30 35 40 45 50 55 60 65 70

9.2

9.4

9.6

9.8

10.2

10.4

10.6

10.8

Figure 6-15. Soft-Start current versus Temperature

Te mperature (

C)

1.22

1.23

1.24

1.25

1.26

1.27

1.28

Figure 6-16. EN/UVLO Threshold versus Temperature

Te mperature (

C)

10 15 20 25 30 35 40 45 50 55 60 65 70

4.2

4.4

4.6

4.8

5.2

5.4

5.6

5.8

Figure 6-17. Hysteresis Current on EN/UVLO versus

Temperature

Switching Frequency (MHz)

0.2

0.4

0.6

0.8

1.2

1.4

1.6

100

150

200

250

300

350

400

450

500

550

600

650

Figure 6-18. Buck Minimum Off-time versus Switching

Frequency

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