DS78LXX Datasheet, PDF (5/7 Pages) –

TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
AMS78LXX
Maximum Power Dissipation (SO-8)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (° C)
Maximum Power Dissipation (SOT-89)
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0 10 20 30 40 50 60 70 80 90 100
AMBIENT TEMPERATURE (° C)
Maximum Power Dissipation (TO-92)
1.0
0.9
0.8
0.7
0.6
0.125" Lead Lenght
from PC Board
0.5
0.4" Lead
0.4
Lenght from
PC Board
0.3
0.2
0.1
0
0 10 20 30 40 50 60 70 80
AMBIENT TEMPERATURE (° C)
TYPICAL APPLICATIONS
Fixed Output Regulator
V_IN
UNREGULATED
INPUT
C1*
0.33µF
AMS78LXX
GND
I_Q
V_OUT
REGULATED
OUTPUT
C2**
10µF
*Required if regulator is located far from power supply filter.
**C2 must be at least 10µF to maintain stability; it can be increased without bound to maintain regulation during transients and it should be
located as close as possible to the regulator. This capacitor must be rated over the same operating temperature range like the regulator.
Current Regulator
INPUT
C1
0.33µF
I_OUT = (V_OUT/R1)+I_Q
>I_Q = 1.5mA over line and load changes
AMS78LXX
R1
OUTPUT
I_OUT
www.advanced-monolithic.com
updated July 26, 2009