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SC2441AEVB 数据表(PDF) 10 Page - Semtech Corporation

部件名 SC2441AEVB
功能描述  1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter
PDF  37 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC2441AEVB 数据表(HTML) 10 Page - Semtech Corporation

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10
 2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC2441A
Block Diagram
Figure 5. Phase-Locked Loop (a) and Its Timing Diagram in Locked Condition (R
2 not Used) (b).
(b)
(a)
1.5V
CLK
CKOUT
28
ROSC
10
6
SYNC/SHDN
EXT CLOCK
BUFFER
PHASE /
FREQUENCY
DETECTOR
QU
QD
I
PLLF
C1
R1
C2
PLLF
2
1K
INTERNAL
CLAMP
R2
EXTERNAL PLL
COMPENSATION
OPTIONAL
RESISTOR FOR
SETTING PHASE
SHIFT
CURRENT-
CONTROLLED
OSCILLATOR
ROSC
TOGGLE
FLIP-FLOP
QT
QT
SETS FREE -
RUNNNG
FREQUENCY
CLK1
CLK2
S1
S2
0.4V
V/I
XCLK
XCLK
CLK1
QT
CLK2
CLK
GDH1
GDH2
CKOUT
QT
I
PLLF



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