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MIC2177BWM Datasheet(PDF) 12 Page - Micrel Semiconductor

Part # MIC2177BWM
Description  2.5A Synchronous Buck Regulator
PDF  16 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2177BWM Datasheet(HTML) 12 Page - Micrel Semiconductor

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MIC2177
Micrel
MIC2177
12
April 1999
The feedback resistors, RC compensation network, and
BIAS pin bypass capacitor should be located near their
respective pins. To prevent ground bounce, their ground
traces and SGND should not be in the path of switching
currents returning to the power supply ground bus. SGND
and PGND should be tied together by a ground plane that
extends under the MIC2177.
BIAS
SGND
AUTO
COMP
PGND
FB
SW
VIN
C2
100µF
10V
VOUT
3.3V/1A
L1, 50µH
C4
6.8nF
C3
0.01µF
MIC2177
SYNC
EN
R4
10k
VIN
4.5V to 16.5V
C1
22µF
35V
U1
20
18
10
11
13
14–17
19
12
4–7
3,8
1,2,9
D1
MBRS130L
U1 Micrel
MIC2177-3.3BWM
C1 AVX
TPSE226M035R0300, ESR = 0.3
Ω
C2 AVX
TPSD107M010R0100, ESR = 0.1
Ω
C3 Z5UorX7R Ceramic Dielectric Material
C4 X7RorNP0 Ceramic Dielectric Material
D1 Motorola
MBRS130LT3
L1
Coiltronics CTX50-4P, DCR = 0.097
Ω
L1
Coilcraft
DO3316P-473, DCR = 0.12
Ω
L1
Bi
HM77-11003, DCR = 0.073
Ω
C5
0.01
µF
OUT
Figure 1. MIC2177 4.5V–16.5V to 3.3/1A Regulator
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