SPX1117 Datasheet, PDF (9/15 Pages) Sipex Corporation – 800mA Low Dropout Regulator

APPLICATION INFORMATION: Continued
(Note A)
V _IN
+
4.7µF
SPX1117
5V
IN
OUT
V
OUT
ADJ
R₁
330Ω
1%
*C ₁ improves ripple rejection.
Z_C should be ~ R1 at ripple frequency
R₂
1kΩ,
1%
10µF
+ C₁
10µF*
Note A: V_IN(MIN) = (Intended V_OUT ) + (V DROPOUT (MAX))
Figure 23. Improving Ripple Rejection
V_IN
(Note A)
+
SPX1117
IN
OUT
ADJ
4.7µF
1K
TTL
Input
2N3904
1k
5V
330W
1%
+
10µF
1kΩ
1%
Note A: V = (Intended V ) + (V
)
IN(MIN)
OUT
DROPOUT (MAX)
Figure 24. 5V Regulator with Shutdown
R_P Parasitic Line
Resistance
V_IN
SPX1117
V_OUT
ADJ
Connect R to
Case of Regulator ^R 1
R₂
Connect R₂
to Load
R_L
Figure 25. Recommended Connections for Best Results
SOT-223 (M3)
TO-252 (R)
TO-220-3 (U)
TO-263-3 (T)
PINOUTS
1 23
ADJ/GND V _{OUT V IN}
Top View
1 23
ADJ/GND
V
OUT
V _IN
123
Front View
ADJ/GND _{V OUT V IN}
Front View
123
ADJ/GND V _{OUT V IN}
Top View
Date: 8/25/04
SPX1117 800mA Low Dropout Voltage Regulator
9
© Copyright 2004 Sipex Corporation