8

UCC15701/2

UCC25701/2

UCC35701/2

VFF

CT

SYNC

Figure 2. Timing diagram for oscillator waveforms showing feedforward action and synchronization.

TYPICAL WAVEFORMS (cont.)

10

100

1000

20

60

100

140

180

220

RT [K ]

100pF

150pF

220pF

330pF

470pF

Figure 3. Oscillator frequency vs. RT and CT.

TYPICAL CHARACTERISTIC CURVES

0.97

0.98

0.99

1.00

1.01

1.02

1.03

-55

-35

-15

5

25

45

65

85

105

125

TEMPERATURE [°C]

VFF=0.8

VFF=3.2

Figure 5. Normalized maximum duty cycle vs.

temperature.

UDG-98208

0.98

0.99

1

1.01

1.02

-55

-35

-15

5

25

45

65

85

105

125

TEMPERATURE [°C]

VFF=3.2

VFF=0.8

CT=330pF

FOSC = 100kHz

Figure 4. Oscillator frequency vs. temperature.