Datasheet


      
SLVS278E – AUGUST 2000 – REVISED MARCH 2003
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 26
OSCILLATOR FREQUENCY
vs
CAPACITANCE
10
100
1000
0 50 100 150 200 250
CT – Capacitance – pF
f
OSC
– Oscillator Frequency – kHz
V
CC
= 7 V,
T
J
= 25 °C
Figure 27
OUTPUT MAXIMUM DUTY CYCLE
vs
JUNCTION TEMPERATURE
81.0
81.5
82.0
82.5
83.0
83.5
84.0
84.5
85.0
–50
0 50 100 150
Output Maximum Duty Cycle – %
V
CC
= 7 V,
V
CC
= 28 V
V
CC
= 4.5 V
T
J
– Junction Temperature – °C
f
osc
= 300 kHz
Figure 28
SCP DELAY TIME
vs
CAPACITANCE
1
10
100
1 k
10 k
100 k
10 100 1 k 10 k 100 k
SCP – Capacitance – pF
– SCP Delay Time (OVP) – s
t
d(SCP)
µ
Figure 29
SOFTSTART TIME
vs
SOFTSTART CAPACITANCE
10
100
1 k
10 k
100 k
100 1 k 10 k 100 k
Softstart Capacitance – pF
t – Softstart Time – s
µ