Datasheet

UCC28050, UCC28051
UCC38050, UCC38051
SLUS515F−SEPTEMBER 2002 − REVISED MARCH 2009
10
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TYPICAL APPLICATION DIAGRAM
UDG−02008
1
2
5
6
7
8
3
4
40 k
Ω
5 pF
+
+
+
x
x
MULT
2.5 V
2.3 V
+
+
OVP
ENABLE
2.7/2.5 V
0.67/0.57 V (50)
PWM
SQ
Q
R
+
TIMER
+
V
REF
INT. BIAS
1.7 V/1.4 V
UVLO
V
REF
GOOD
OVP
VO_SNS
COMP
MULTIN
CS ZCD
GND
DRV
VCC
+−
L
R
G1
R
S1
C
OUT
R
UP
R
AC1
R
O2
R
V1
C
V1
R
AC2
C
V2
R
V1
ZERO
POWER
DETECT
g
M
E/A
R
O1
V
REF
AND
BIAS REG
÷
C
B
R
B
C
AC1
C
S1
R
ZC
REF
0.23/0.15 V (51)