TC426/TC427/TC428
FIGURE 3-1:
INVERTING DRIVER
SWITCHING TIME
TEST CIRCUIT
V
DD
= 18V
1µF
0.1µF
FIGURE 3-2:
NONINVERTING DRIVER
SWITCHING TIME
TEST CIRCUIT
V
DD
= 18V
1µF
0.1µF
Input
1
Output
C
L
= 1000pF
Input
1
Output
C
L
= 1000pF
Input: 100kHz,
square wave,
t
RISE
= t
FALL
≤
10nsec
2
2
Input: 100kHz,
square wave,
t
RISE
= t
FALL
≤
10nsec
TC426
(1/2 TC428)
TC427
(1/2 TC428)
+5V
Input
0V
18V
Output
0V
10%
10%
t
D1
t
F
90%
90%
+5V
Input
90%
t
D2
0V
t
R
90%
10%
90%
t
R
10%
10%
90%
t
F
18V
t
D1
Output
t
D2
10%
0V
FIGURE 3-3:
+15V
VOLTAGE DOUBLER
30.
29.
28.
0.1µF
V
OUT
(V)
V
OUT
+
–
47µF
+
–
4.7µF
1N4001
27.
26.
25.
24.
23.
22.
0
6
2
f
IN
= 10kHz
1/2
TC426
3
–
7
+
1N4001
10µF
10 20 30 40 50 60 70 80 90 100
I
OUT
(mA)
FIGURE 3-4:
+15V
+
0.1µF
VOLTAGE INVERTER
-5
-6
–
-7
-8
4.7µF
V
OUT
(V)
-9
-10
-11
-12
2
f
IN
= 10kHz
6
1/2
TC426
3
+
7
–
1N4001
–
+
V
OUT
10µF
1N4001
-13
47µF
-14
0
10 20 30 40 50 60 70 80 90 100
I
OUT
(mA)
2002 Microchip Technology Inc.
DS21415B-page 7
MICROCHIP [ MICROCHIP TECHNOLOGY ]
