BiCMOS CURRENT MODE
PWM CONTROLLERS
1
2
3
4
5
6
7
8
TC18C43
TC28C43
TC38C43
TYPICAL CHARACTERISTICS (Cont.)
I
vs. Temperature
Frequency of Operation
Dead Time vs. C
T
DD
2.0
1.8
1.6
1.4
1.2
1.0
10 nF
10nF
V
= 15V
IN
f = 100kHz
R
R
R
R
= 10 k
= 22 k
= 47 k
= 100 k
T
T
T
T
1nF
1nF
100pF
100pF
100kHz
FREQUENCY
1 MHz
100nsec
1 µsec
DISCHARGE TIME
10µsec
–60 –40–20
0
20 40 60 80 100120140
10 kHz
TEMPERATURE (°C)
1000
800
600
400
200
0
PDIP
SLOPE = – 8mW/°C
CerDIP
SLOPE = – 6.4mW/°C
SOIC
SLOPE = – 4mW/°C
25
50
75
100
125
150
AMBIENT TEMPERATURE (°C)
TELCOM SEMICONDUCTOR, INC.
4-99