SC4612H Datasheet, PDF (7/21 Pages) Semtech Corporation – 40V Synchronous Buck Controller

POWER MANAGEMENT
Block Diagram
SC4612H
OSC
DRV
VDD
FB
ILIM
SQ
CO_INT
R
EN
+
-
830mV
SQ
R
OTP
DRV
SQ
R
S_MOD
DRV
VREF
VDD _DRV
REG
& BG _{VREF VREF}
VSS
V+
SS_3 _OUT
V-
12k
OC DETECT
OC
OSC
SPLSE
OSC
+
-
SQ
R
0.6V
- ^OVP
+
BST
DH
PHASE
DL
GND
EAO
SS/EN
SOFTSTART
SSDN
SSLO
SSINT
SS SSHI
SQ
R
SQ
R
SQ
R
SQ
R
dd
© 2008 Semtech Corp.
7
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