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MIC5158BN Datasheet(PDF) 6 Page - Micrel Semiconductor

Part # MIC5158BN
Description  Super LDO Regulator Controller
Download  13 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC5158BN Datasheet(HTML) 6 Page - Micrel Semiconductor

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MIC5156/5157/5158
Micrel, Inc.
MIC5156/5157/5158
6
August 2005
Block Diagram MIC5156
EN
Enable
Shutdown
1.235V
Bandgap
Reference
Internal
Bias
Error
Amp
75mV
35mV
GND
S* (Source)
16.6V
ILIMIT
Comparator
D (Drain)
[ ILIMIT ]
G (Gate)
FLAG
VP
VDD
VOUT
Comparator
10k
to all
internal blocks
EA
17k
Regulated
+3.3V Output
+12V Input
+5V Input
+5V Input
RS
3mΩ
0.1µF
Q2
Q1
SMP60N03-10L
Switched
5V Load
12k
* fixed version only
3.3V = 17k, 5V = 32k
adjustable version only
CL
Block Diagram MIC5157
Block Diagram with External Components
Fixed 3.3V Power Supply with 5.0V Load Switch
Block Diagram with External Components
Fixed 3.3V 10A Power Supply
1.235V
Bandgap
Reference
VCP
Clamp
Internal
Bias
Error
Amp
75mV
35mV
GND
S (Source)*
ILIMIT
Comparator
D (Drain)
[ ILIMIT]
G (Gate)
VCP
VDD
VOUT
Comparator
to all
internal blocks
3.3V
Regulated
+3.3V Output
+5V Input
Q1
IRFZ44
RS
3mΩ
1µF
16.6V
10k
58k
15k
17k
5V
Oscillator
Charge Pump
Tripler
C1+ C1– C2+ C2–
0.1µF
0.1µF
C1
C2
C3
FLAG
EN
Enable
Shutdown
CL


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