FUNCTIONAL DIAGRAM
IN
O.V
I
LIMIT
FLAG
+
-
1.180V
Reference
1.240V
+
-
ADJ
EN
Thermal
Shutdown
20V
R1*
OUT
R2*
GND
TYPICAL PERFORMANCE CHARACTERISTICS
600
120
110
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
Output Current (A)
550
500
Ground Current (mA)
Dropout (mA)
450
400
350
300
250
200
150
100
50
0
1
2
3
4
5
6
Output Current (A)
Figure 3. Ground Current (mA) vs. Output Current (A)
Figure 4. Dropout (mV) vs. Output Current (A)
V
OUT
(AC)
V
OUT
(AC)
I
OUT
(2A/DIV)
V
IN
Figure 5. Load Transient (V
IN
=4V, V
O
=3.3V, C
OUT
=22µF,
10mA~5A)
Rev:B
Nov 2008
Figure 6. Line Transient (C
OUT
=22µF, I
O
=10mA)
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
©
Copyright 2008
Exar
Corporation
4
EXAR [ EXAR CORPORATION ]
