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MIC2177BWM Datasheet(PDF) 11 Page - Micrel Semiconductor

Part # MIC2177BWM
Description  2.5A Synchronous Buck Regulator
PDF  15 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2177BWM Datasheet(HTML) 11 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2177
April 2008
11
M9999-042108
PWM-Mode Functional Diagram
SW
PGND
ISENSE
Amp.
VREF1.245V
100m
N-channel
100m
P-channel
CO MP
VIN
Error
Amp.
R
S
Q
200kHz
Oscillator
PWM
Comp.
VOUT
L1
FB
SG ND
C
C
VIN
4.5V to 16.5V
CIN
SYNC
COUT
MIC2177 [Adjustable] PWM-Mode Signal Path
Stop
18
13
2
1
3
8
D
4
5
6
7
R1
R2
12
14
15 16
17
R
C
Corrective
Ramp
Reset
Pulse
IL1
9
VOUT = 1.245
R1
R2
+ 1
(
)
VSW
IL1
Reset
Pulse
ISENSE
ILOAD
IL1
Error Amp.
Output



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