sc1470 Semtech Corporation, sc1470 Datasheet - Page 6

• Manufacturer Part Number: sc1470
• Description: Synchronous Buck Pseudo Fixed Frequency Power Supply Controller
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
Shoot-Through Delay Timing Diagram
Block Diagram
2005 Semtech Corp.
VCCA (4)
EN/SPV (1)
TON (2)
VOUT (3)
FB (5)
PGD (6)
VSSA (7)
LX
DL
tplhDL
POR / SS
1.5V REF
X3
TON
TOFF
Figure 1 - SC1470 Block Diagram
+
-
FAULT
MONITOR
OT
DH
DL
6
ON
OFF
PWM
REF + 10%
REF - 10%
REF - 30%
ZERO I
OV
UV
OC
CONTROL
LOGIC
tplhDH
ISENSE
HI
LO
BST (14)
DH (13)
LX (12)
ILIM (11)
VDDP (10)
DL (9)
PGND (8)
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SC1470