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Número de pieza
componentes Descripción
MIC2182 Ver la hoja de datos (PDF) - Micrel
Número de pieza
componentes Descripción
Fabricante
MIC2182
High-Efficiency Synchronous Buck Controller
Micrel
MIC2182 Datasheet PDF : 28 Pages
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MIC2182
Block Diagrams
Micrel
EN/UVLO
6
SS
1
PWM
2
Control
Logic
V
DD
Reference
V
IN
Current
Limit
V
IN
C
IN
VDD
11
VIN
10
4.7
µ
F
D2
VBST
14
HSD
C
BST
16
Q2
VSW
L1
R
CS
15
LSD
13
D1
Q1
PGND
12
V
OUT
C
OUT
PWM Mode
to Skip
Mode
0.024V
Skip-Mode
Current
Limit
0.07V
Low
Comp
–
2%V
BG
Hysteresis
Comp
PWM
RESET
CORRECTIVE
RAMP
SYNC
5
Oscillator
COMP
3
C
COMP
R
COMP
MIC2182 [adj.]
Error
Amp
100k
Current
Sense
Amp
A
V
= 2
G
m
= 0.2
×
10
-3
CSH
8
VOUT
9
R1
FB
7
R2
SGND
4
V
OUT
=
1.245V
1
+
RR21
V
OUT(max)
=
6
.
0V
Figure 2a. Adjustable Output Voltage Version
M9999-042204
8
April 22, 2004
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