AS1117
Table 1.
TOTAL PC BOARD AREA
2500mm
2500mm
2500mm
2500mm
2500mm
1600mm
2500mm
2500mm
1600mm
900mm
900mm
TOPDIDE COPPER AREA
2500mm
1250mm
950mm
2500mm
1800mm
600mm
1250mm
915mm
600mm
240mm
240mm
BACKSIDE COPPER AREA
2500mm
2500mm
2500mm
0
0
1600mm
0
0
0
900mm
0
THERMAL RESISTANCE
JUNCTION TO AMBIENT
46°C/W°
°
47°C/W°
°
49°C/W°
°
51°C/W°
°
53°C/W°
°
55°C/W°
°
58°C/W°
°
59°C/W°
°
67°C/W°
°
72°C/W°
°
85°C/W°
°
V
IN
C
1
IN
ALPHA
AS1117
ADJ
OUT
V
IN
C
1
R
1
IN
ALPHA
AS1117
ADJ
I
ADJ
50uA
OUT
C
2
v
REF
R
1
V
OUT
LOAD
V
OUT
= V
REF
(1+R
2
/R
1
) +I
ADJ
R
2
R
2
800mA Current output
Regulator
Typical Adjustable Regulator
Alpha Semiconductor Inc. 1031 Serpentine Lane. Pleasanton, CA 94568 Tel: (925) 417-1391 Fax: (925) 417-1390
Rev. 9/14/99
ALPHA [ ALPHA INDUSTRIES ]
