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TYPICAL CHARACTERISTICS

0

10

20

30

40

50

60

70

105

115

125

135

145

Continous Tj – °C

100 k

10 k

1 k

1 M

1 k

4 k

10 k

40 k

100 k

400 k

1 M

CT = 150 pF

CT = 1500 pF

CT = 15000 pF

VCC = 5 V

TA = 25°C

RT − Timing Resistance − Ω

0

−1

−2

−3

−25

0

25

50

1

2

3

75

100

VCC = 3.6 V

RT = 10 kΩ

CT = 330 pF

fosc = 200 kHz

TA − Free-Air Temperature − °C

TL1451A-EP

DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

SLVS614 – DECEMBER 2005

Figure 3. Estimated Deviced Life at Elevated Temperatures for Wirebond Voiding Fail Mode

Figure 4. Triangle Oscillator Frequency

Figure 5. Oscillator Frequency Variation

vs Timing Resistance

vs Free-Air Temperature

8