AMS78LXX
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Maximum Power Dissipation (TO-92)
Maximum Power Dissipation (SO-8)
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
1.0
0.9
1.0
0.9
0.8
0.7
0.6
0.8
0.7
0.125" Lead Lenght
from PC Board
0.6
0.5
0.4
0.5
0.4" Lead
Lenght from
PC Board
0.4
0.3
0.2
0.3
0.2
0.2
0.1
0
0.1
0
0
0
10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (° C)
0
10 20 30 40 50 60 70 80 90 100
AMBIENT TEMPERATURE (° C)
0
10 20 30 40 50 60 70 80
AMBIENT TEMPERATURE (° C)
TYPICAL APPLICATIONS
Fixed Output Regulator
VIN
VOUT
UNREGULATED
INPUT
AMS78LXX
REGULATED
OUTPUT
C2**
10
C1*
GND
IQ
m
F
m
0.33
F
*Required if regulator is located far from power supply filter.
**C2 must be at least 10mF 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
AMS78LXX
INPUT
C1
0.33
R1
F
m
OUTPUT
IOUT
IOUT = (VOUT/R1)+IQ
>IQ = 1.5mA over line and load changes
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
ADMOS [ ADVANCED MONOLITHIC SYSTEMS ]
