SC1480A Datasheet, PDF (5/23 Pages) Semtech Corporation – DDR and DDR Memory VTT power Supply Controller

POWER MANAGEMENT
Shoot-Through Delay Timing Diagram
LX
DH
DL
DL
tplhDL
tplhDH
SC1480A
Block Diagram
VCCA (4)
REFIN (1)
TON (2)
REFOUT (3)
FB (5)
PGD (6)
VSSA (7)
TON
TOFF
+
-
POR / SS
OT
REF BUFFER
VDDP
ON
OFF
CONTROL
HI
LOGIC
PWM
OC
+
ZERO I
-
FAULT
MONITOR
OV
UV
REF + 10%
REF - 10%
REF - 20%
ISENSE
LO
BST (14)
DH (13)
LX (12)
ILIM (11)
VDDP (10)
DL (9)
PGND (8)
 2003 Semtech Corp.
.IGURE 1: Block Diagram
5
www.semtech.com