SI9182 Datasheet, PDF (9/10 Pages) Vishay Siliconix – Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-Reset

Si9182
Vishay Siliconix
BLOCK DIAGRAMS
4
V_IN
C_IN
2.2 mF
6 SENSE
1
C_NOISE
Switches shown for device in normal operating mode (SD = HIGH)
8
SD
ON
OFF
6 MW
3
GND
RFB2
RFB1
+
−
To V_IN
60 mV _{2 mA}
+
+
−
+
−
1.215 V
V_{REF −}
+
5
C_OUT
2.2 mF
2
C_DELAY
0.1 mF
7
V_OUT
R_EXT
ERROR
FIGURE 5. 250-mA CMOS LDO Regulator (Fixed Output)
4
V_IN
C_IN
2.2 mF
8
SD
ON
OFF
3
GND
6 ADJ
1
C_NOISE
6 MW
60 mV
+
−
To V_IN
2 mA
+
+
−
+
1.215 V
−
V_{REF −}
+
R₂
V_ADJ
R₁
5
C_OUT
2.2 mF
2
C_DELAY
0.1 mF
7
V_OUT
R_EXT
ERROR
FIGURE 6. 250-mA CMOS LDO Regulator (Adjustable Output)
Document Number: 71150
S-41221—Rev. F, 28-Jun-04
www.vishay.com
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