SI91821 Vishay Siliconix, SI91821 Datasheet - Page 5

• Manufacturer Part Number: SI91821
• Description: Micropower 300-mA CMOS LDO Regulator With Error Flag
• Manufacturer: Vishay Siliconix

Document Number: 71614
S-51147–Rev. E, 20-Jun-05
BLOCK DIAGRAM
V
V
IN
IN
SD
SD
ON
ON
2.2 mF
2.2 mF
C
C
GND
GND
IN
IN
OFF
OFF
2
7
3
2
7
3
6 MW
6 MW
5
5
SET
RFB2
RFB1
SET
Figure 6.
1.215 V
1.215 V
V
V
REF
REF
+
+
6
6
Figure 5.
300-mA CMOS LDO Regulator (Adjustable Output)
+
−
+
−
60 mV
60 mV
C
C
+
−
+
−
NOISE
NOISE
+
−
+
−
300-mA CMOS LDO Regulator
2 mA
2 mA
To V
To V
−
+
−
+
Switches shown for device in normal operating mode (SD = HIGH)
IN
IN
1, 4
8
1, 4
8
2.2 mF
2.2 mF
C
C
OUT
OUT
Vishay Siliconix
V
SET
Si91821
R
R
R
R
EXT
2
1
EXT
www.vishay.com
V
ERROR
V
ERROR
OUT
OUT
5