MC78L00 Datasheet, PDF (6/8 Pages) Motorola, Inc – Three-Terminal Low Current Positive Voltage Regulators

MC78L00, A Series
Figure 1. Dropout Characteristics
8.0
MC78L05C
Vout = 5.0 V
6.0 TJ = 25°C
IO = 1.0 mA
4.0
IO = 40 mA
2.0
IO = 100 mA
0
0
2.0
4.0
6.0
8.0
10
VI, INPUT VOLTAGE (V)
Figure 2. Dropout Voltage versus
Junction Temperature
2.5
IO = 70 mA
2.0
1.5
1.0
IO = 40 mA
IO = 1.0 mA
0.5
Dropout of Regulation is
defined as when
VO = 2% of VO
0
0
25
50
75
100
125
TJ, JUNCTION TEMPERATURE (°C)
Figure 3. Input Bias Current versus
Ambient Temperature
4.2
4.0
3.8
3.6
3.4
3.2 MC78L05C
VI = 10 V
3.0 VO= 5.0 V
IO = 40 mA
0
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
Figure 4. Input Bias Current
versus Input Voltage
5.0
4.0
3.0
MC78L05C
Vout = 5.0 V
IO = 40 mA
2.0
TJ = 25°C
1.0
0
0
5.0 10 15 20 25 30 35 40
VI, INPUT VOLTAGE (V)
Figure 5. Maximum Average Power Dissipation versus
Ambient Temperature – TO–92 Type Package
10,000
No Heatsink
1000
100
R_θJA = 200°C/W
PD(max) to 25°C = 625 mW
10
25
50
75
100
125
150
TA, AMBIENT TEMPERATURE (°C)
Figure 6. SOP–8 Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
170
3.2
150
2.8
PD(max) for TA = 50°C
130
2.4
110
90
70
Graph represents symmetrical layout ^2.0
ÎÎÎÎÎÎÎÎÎÎÎÎÎ _L
2.0 oz.
Copper
ÎÎÎ ÎÎÎ L
1.6
1.2
3.0 mm
50
0.8
R_θJA
30
0.4
0
10
20
30
40
50
L, LENGTH OF COPPER (mm)
6
MOTOROLA ANALOG IC DEVICE DATA