Datasheet

 
SLUS544E − SEPTEMBER 2003 − REVISED MARCH 2009
6
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FUNCTIONAL BLOCK DIAGRAM
14
REF
10
CHG
9
DISCHG
8
CTRL
4
CS1
6
CS2
5
SLOPE
2
LINEHYS
12
OUT2
11
GND
13
OUT1
7
SS
3
VDD
16
VIN
(N/C on
UCC28220)
SLOPE
COMPENSATION
SQ
QR
+
CLK1
SQ
QR
+
CLK2
OSC
20 k
Ω
30 k
Ω
1 pF
REFERENCE
UVLO/ JFET
CONTROL
RUN
Soft−Start
VREF
VREF
TQ
Q
CLK1
CLK2
+
+
−
1
LINEOV
15
LINEUV
LINE OV/UV
RUN
LATCH
LATCH
+
+
0.5 V
0.5 V
RUN
RUN
P2
FF
NOTE: Pinout for 16 pin option shown. See the 20-pin connection to UCC28221PW in the Terminal Functions table on the next page.