sc1486aitstr Semtech Corporation, sc1486aitstr Datasheet - Page 8

• Manufacturer Part Number: sc1486aitstr
• Description: Complete Ddr1/2/3 Power Supply Controller
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
Block Diagram
2006 Semtech Corp.
VCCA1 (25)
EN/SPV1 (22)
TON1 (23)
VOUT1 (24)
FB1 (26)
PGD1 (27)
VSSA1 (28)
VCCA2 (11)
REFIN (8)
TON2 (9)
REFOUT (10)
FB2 (12)
PGD2 (13)
VSSA2 (14)
POR / SS
1.5V REF
+
-
X3
TON
TOFF
TON
TOFF
FIGURE 1 - SC1486A Block Diagram
REF BUFFER
+
-
+
-
FAULT
MONITOR
FAULT
MONITOR
OT
8
ON
OFF
PWM
REF + 10%
REF - 10%
REF - 30%
ON
OFF
PWM
2V
REF - 10%
REF - 20%
ZERO I
OV
UV
ZERO I
OV
UV
OC
OC
CONTROL
LOGIC
POR / SS
CONTROL
LOGIC
VDDP2
ISENSE
ISENSE
HI
LO
HI
LO
OT
BST1 (7)
DH1 (6)
LX1 (5)
ILIM1 (4)
VDDP1 (3)
DL1 (2)
PGND1 (1)
BST2 (21)
DH2 (20)
LX2 (19)
ILIM2 (18)
VDDP2 (17)
DL2 (16)
PGND2 (15)
SC1486A
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