MIC2178-5.0BWM 데이터 시트보기 (PDF) - Micrel
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MIC2178-5.0BWM Datasheet PDF : 15 Pages
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MIC2178
PWM-Mode Functional Diagram
VIN
4.5V to 16.5V
CIN
VIN 1 2 9
Micrel, Inc.
ISENSE
Amp.
100mΩ
P-channel
100mΩ
N-channel
Stop
SYNC
18
200kHz
Oscillator
Corrective
Ramp
Reset
Pulse
COMP
CC
RC 13
R
Q
S
PWM
Comp.
Error
Amp.
VREF 1.245V
MIC2178 [Adjustable] PWM-Mode Signal Path
SGND 14 15 16 17
VOUT
R1
1.245
R2
SW
3
L1
8
IL1
D
COUT
PGND
4
5
6
7
1
VOUT
R1
FB
12
R2
VSW
Reset
Pulse
ILOAD
IL1
∆IL1
Error Amp.
Output
ISENSE
March 2005
9
M9999-031805
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