MIC2182 데이터 시트보기 (PDF) - Micrel
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MIC2182 Datasheet PDF : 28 Pages
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MIC2182
Block Diagrams
Micrel
EN/UVLO
6
SS
1
PWM
2
Control
Logic
VDD
Reference VIN
Current
Limit
VIN
CIN
VDD
11
VIN
10
4.7µF
D2
VBST
14
HSD
CBST
16
Q2
VSW
L1
RCS
15
LSD
13
D1
Q1
PGND
12
VOUT
COUT
PWM Mode
to Skip
Mode
0.024V
Skip-Mode
Current
Limit
0.07V
Low
Comp
–2%VBG
Hysteresis
Comp
PWM
RESET
CORRECTIVE
RAMP
SYNC
5
Oscillator
COMP
3
CCOMP
RCOMP
MIC2182 [adj.]
Error
Amp
100k
Current
Sense
Amp
AV = 2
Gm = 0.2×10-3
CSH
8
VOUT
9
R1
FB
7
R2
SGND
4
VOUT = 1.245V 1+ RR21
VOUT(max) = 6.0V
Figure 2a. Adjustable Output Voltage Version
M9999-042204
8
April 22, 2004
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