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MIC2179 Datasheet(PDF) 6 Page - Micrel Semiconductor

Part # MIC2179
Description  1.5A Synchronous Buck Regulator
PDF  16 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2179 Datasheet(HTML) 6 Page - Micrel Semiconductor

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MIC2179
Micrel
MIC2179
6
June 1998
Block Diagram
SW
PGND
ISENSE
Amp.
PWM/
Skip-Mode
Select
VREF 1.245V
110m
Ω
N-channel
110m
Ω
P-channel
COMP
VIN
Skip-Mode
Comp.
ILIMIT
Comp.
Output
Control
Logic
Power Good
Comp.
1.13V
R
S
Q
200kHz
Oscillator
PWM
Comp.
3.3V
Regulator
UVLO,
Thermal
Shutdown
VOUT
L
FB
SGND
C
C
PWRGD
0.01µF
EN
BIAS
VIN
4.5V to 16.5V
100µF
SYNC
COUT
MIC2179 [Adjustable]
internal
supply Voltage
Enable
Shutdown
Stop
15
14
13
6
8
17
16
3
D
1
2
19
20
R1
R2
7
910
11
12
Bold lines indicate
high current traces
ILIMIT
Thresh.
Voltage
PWM
Skip Mode
PWM Mode
5
VIN
Output Good
20k
*
* Connect
SGND to PGND
RC
Reset
Pulse
Corrective
Ramp
VOUT
1.245
R1
R2
1



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