sc1485itstr Semtech Corporation, sc1485itstr Datasheet - Page 7
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sc1485itstr
Manufacturer Part Number
sc1485itstr
Description
Dual Synchronous Buck Pseudo Fixed Frequency Power Supply Controller
Manufacturer
Semtech Corporation
Datasheet
1.SC1485ITSTR.pdf
(27 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SC1485ITSTR
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
Company:
Part Number:
sc1485itstrT
Manufacturer:
ON
Quantity:
6 285
Part Number:
sc1485itstrT
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
POWER MANAGEMENT
Block Diagram
2005 Semtech Corp.
VCCA1 (25)
EN/SPV1 (22)
TON1 (23)
VOUT1 (24)
FB1 (26)
PGD1 (27)
VSSA1 (28)
VCCA2 (11)
EN/SPV2 (8)
TON2 (9)
VOUT2 (10)
FB2 (12)
PGD2 (13)
VSSA2 (14)
POR / SS
1.5V REF
POR / SS
1.5V REF
X3
X3
TON
TOFF
TON
TOFF
+
-
+
-
FAULT
MONITOR
FAULT
MONITOR
OT
OT
FIGURE 1.
7
ON
OFF
PWM
REF + 10%
REF - 10%
REF - 30%
ON
OFF
PWM
REF + 10%
REF - 10%
REF - 30%
ZERO I
OV
UV
ZERO I
OV
UV
OC
OC
CONTROL
LOGIC
CONTROL
LOGIC
ISENSE
ISENSE
HI
LO
HI
LO
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)
SC1485
www.semtech.com