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Número de pieza
componentes Descripción
MIC2179 Ver la hoja de datos (PDF) - Micrel
Número de pieza
componentes Descripción
Fabricante
MIC2179
1.5A Synchronous Buck Regulator
Micrel
MIC2179 Datasheet PDF : 13 Pages
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Micrel, Inc.
Skip-Mode Functional Diagram
Output Control Logic
One
Shot
S
Q
R
I
LIMIT
Comp.
I
LIMIT
Thresh.
Voltage
MIC2179
V
IN
4.5V to 16.5V
C
IN
VIN
16 17
I
S E N S E
Amp.
110m
Ω
P-channel
( )
V
OUT
= 1.245
R1
R2
+
1
SW
3
PGND
1
2
19
20
L1
I
L1
D
C
O U T
V
O U T
Skip-Mode
Comp.
V
R EF
1.245V
MIC2179 [Adjustable] Skip-Mode Signal Path
S G N D
9 10 11 12
R1
FB
7
R2
V
S W
V
IN
V
O U T
0
One-Shot
Pulse
I
LIM
I
L 1
0
V
R E F
+ 5mV
V
F B
V
R E F
– 5mV
June 2009
10
M9999-063009
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