ꢀ ꢁꢂꢃ ꢄꢂ ꢅ
ꢀ ꢁꢂꢃ ꢄꢂ ꢆ
SLUS557B − MARCH 2003 − REVISED APRIL 2004
APPLICATION INFORMATION
OUTPUTS
UC28023 has one output and UC28025 has dual alternating outputs.
SATURATION VOLTAGE
vs
OUTPUT CURRENT
UC2802x
3
15 VCC
13 VC
2
Source
OUTx
1
12 PWRGND
10 GND
Sink
0
0
0.25
0.50
OUT
0.75
1.00
1.25
1.50
I
− Output Current − A
Figure 16. Simplified Schematic
Figure 17.
RISE/FALL TIME
vs
RISE/FALL TIME
vs
OUTPUT VOLTAGE AND LOAD CURRENT
OUTPUT VOLTAGE AND LOAD CURRENT
0.2
0
0.2
0
C
=10 nF
C
=1 nF
LOAD
LOAD
15
−0.2
15
10
−0.2
10
5
0
5
0
0
100
200
300
400
500
0
40
80
(t
120
160
200
t
(t
) − Time − ns
t
) − Time − ns
RISE FALL
RISE FALL
Figure 18.
Figure 19.
14
www.ti.com
TI [ TEXAS INSTRUMENTS ]
