Datasheet

 
SLUS544E − SEPTEMBER 2003 − REVISED MARCH 2009
20
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TYPICAL CHARACTERISTICS
Figure 19
PROGRAMMING RESISTORS
vs
SWITCHING FREQUENCY
RCHRG RDISRG − Resistance − Ω
f
S
- Switching Frequency − Hz
10K 100K 1M
1K
10K
100K
10M
1M
RCHRG = RDISRG
D
MAX
= 75%
Figure 20
OSCILLATOR FREQUENCY
vs
TEMPERATURE
f
S
- Oscillator Frequency − kHz
−50 −25 0 25 50 75 100
450
460
470
480
490
500
510
12
5
520
530
540
550
Tj − Temperature − °C
RCHRG = RDISRG = 10.2 kΩ
Figure 21
PROGRAMMABLE MAX DUTY CYCLE
vs
TEMPERATURE
DC − Duty Cycle − %
−50 −25 0 25 50 75 100
73
74
75
76
77
125
Tj − Temperature − °C
RCHRG = RDISRG = 10.2 kΩ
Figure 22
CSx to OUTx delay
vs
CSx Peak Voltage
CSx to OUTx delay − ns
CSx − Peak Voltage − V
0 0.2 0.4 0.6 0.8 1.0 1.2
0
10
20
30
40
50
60
1.4
70
80
90
100
1.6 1.8
105°C
25°C
−40°C