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40

60

80

100

120

140

−50

0

50

100

150

OVP

UVP

0

100

200

300

400

500

0

5

10

15

20

25

CH1

CH2

V

−

TONSEL = GND

0

100

200

300

400

500

0

5

10

15

20

25

CH1

CH2

TONSEL = FLOAT

0

100

200

300

400

500

0

5

10

15

20

25

CH1

CH2

TONSEL = V5FILT

TPS51124

SLVS616A – NOVEMBER 2005 – REVISED NOVEMBER 2005

TYPICAL CHARACTERISTICS (continued)

OVP/UVP THRESHOLD

SWITCHING FREQUENCY (SLOW)

vs

vs

JUNCTION TEMPERATURE

INPUT VOLTAGE

Figure 5.

SWITCHING FREQUENCY (MED)

SWITCHING FREQUENCY (FAST)

vs

vs

INPUT VOLTAGE

INPUT VOLTAGE

Figure 7.

Figure 8.

(1)

The data of Figure 6–Figure 8 are measured from the Typical Application Circuit of Figure 25 and Table 2.

11