SC4530 Datasheet, PDF (5/23 Pages) Semtech Corporation – 30V, 300mA Output Micropower Step-Down Switching Regulator

Block Diagram
SC4530
EN
8
BANDGAP
REFERENCE
1.232V
530ns
Min. tOFF
530ns
FB
1
EA
CMP
RUN / IDLE
IN
6
R
} ^PARASITICS
RS1
OC
+
IPK
VOS
-
RQ
SQ
BIAS
2
D2
BST
3
Q1
ICNTL
DZ
VHYS
R
UC
+
IVLY
-
SW
4
D1
RS2
GND
5
Figure 2. SC4530 Block Diagram