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SC411 Datasheet(PDF) 6 Page - Semtech Corporation

Part # SC411
Description  Synchronous Buck Pseudo-Fixed Frequency Power Supply Controller
PDF  27 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC411 Datasheet(HTML) 6 Page - Semtech Corporation

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© 2007 Semtech Corp.
www.semtech.com
SC411
POWER MANAGEMENT
OV
TON (16)
MONITOR
PWM
+
-
TOFF
EN/PSV (15)
1.5V REF
VCCA (2)
TON
ISENSE
BST (13)
REF - 30%
UV
HI
DH (12)
LX (11)
ON
LO
ILIM (10)
OFF
VDDP (9)
DL (8)
ZERO
PGND (7)
CONTROL
LOGIC
POR / SS
VSSA (6)
FAULT
REF + 16%
OC
OT
PGD (4)
X3
FB (3)
REF - 10%
VOUT (1)
DSCHG
DSCHG
NC (5)
NC (14)
Block Diagram
Note: the Error Comparator tolerances are approximately
x3 gain stage = +/- 0.1% gain error
comparator = +/- 3mV offset error
1.5V REF = +/- 1.0%
Error Comparator



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