SPX1117M3 Exar Corporation, SPX1117M3 Datasheet - Page 9

• Manufacturer Part Number: SPX1117M3
• Description: 800mA Low Dropout Voltage Regulator
• Manufacturer: Exar Corporation

Figure 23. Improving Ripple Rejection
Date: 8/25/04
Figure 25. Recommended Connections for Best Results
V
IN
*C
Note A: V
Z
C
(Note A)
1
V
should be ~ R1 at ripple frequency
IN
improves ripple rejection.
IN(MIN)
4.7µF
ADJ
= (Intended V
+
SPX1117
ADJ/GND
SOT-223 (M3)
IN
OUT
Case of Regulator
Connect R to
1
Top View
SPX1117
) + (V
V
R
2
OUT
ADJ
DROPOUT (MAX)
P
Resistance
Parasitic Line
3
V
IN
OUT
R
R
1k ,
)
1%
1
2
R
SPX1117 800mA Low Dropout Voltage Regulator
2
ADJ/GND
Connect R
to Load
5V
330
1%
R
1
+
TO-252 (R)
Front View
1
10µF*
C
2
1
V
R
OUT
2
L
10µF
V
3
OUT
V
V
OUT
IN
ADJ/GND
9
APPLICATION INFORMATION: Continued
Figure 24. 5V Regulator with Shutdown
TO-220-3 (U)
Front View
1
V
2
OUT
(Note A)
V
3
Input
TTL
IN
V
IN
+
Note A: V
4.7µF
1K
IN(MIN)
ADJ/GND
IN
1k
= (Intended V
SPX1117
ADJ
TO-263-3 (T)
1
Top View
2N3904
© Copyright 2004 Sipex Corporation
V
2
OUT
OUT
OUT
) + (V
3
V
DROPOUT (MAX)
IN
330W
1k
1%
1%
)
+
PINOUTS
10µF
5V