Datasheet

UC28023
UC28025
SLUS557F -- MARCH 2003 -- REVISED AUGUST 2010
8
www.ti.com
APPLICATION INFORMATION
1
3
4
5
9
7
6
12
ILIM/SD
RAMP
CT
PGND
INV
EAOUT
CLOCK
RT
UC28025
16
2
14
11
OUTB
OUTA
VREF
NI
15 13
VCC VC
10 8
GND SS
15 V
22 pF
120 pF
10 nF
1N 5820
1nF
42 V to 56 V
UDG--03047
4.7 μF
V
IN
1kΩ
10
kΩ
1kΩ
1 Ω
C
T
470 pF
1kΩ
8.2 kΩ
0.1 μF
1.5 kΩ
3.3 kΩ
4.3 kΩ
0.1 μF
4.7 μF
0.8 μH
V
OUT
5V
1Ato10A
6 μF
5:1
+
--
--
+
12 V
Figure 1. Typical Application: 1.5 MHz, 48-V to 5-V DC/DC Push-Pull Converter Using UC28025