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SI9181 Datasheet, PDF (9/10 Pages) Vishay Siliconix – Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset | |||
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Si9181
Vishay Siliconix
BLOCK DIAGRAMS
4
VIN
CIN
2.2 mF
6 SENSE
1
CNOISE
Switches shown for device in normal operating mode (SD = HIGH)
8
SD
ON
OFF
6 MW
3
GND
RFB2
RFB1
+
â
To VIN
60 mV 2 mA
+
+
â
+
â
1.215 V
VREF â
+
5
COUT
2.2 mF
2
CDELAY
0.1 mF
7
VOUT
REXT
ERROR
FIGURE 5. 350-mA CMOS LDO Regulator (Fixed Output)
4
VIN
CIN
2.2 mF
8
SD
ON
OFF
3
GND
6 ADJ
1
CNOISE
6 MW
60 mV
+
â
To VIN
2 mA
+
+
â
+
1.215 V
â
VREF â
+
R2
VADJ
R1
5
COUT
2.2 mF
2
CDELAY
0.1 mF
7
VOUT
REXT
ERROR
FIGURE 6. 350-mA CMOS LDO Regulator (Adjustable Output)
Document Number: 71119
S-40694âRev. D, 19-Apr-04
www.vishay.com
9
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