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MC79L00 Datasheet, PDF (5/6 Pages) Motorola, Inc – THREE-TERMINAL LOW CURRENT NEGATIVE FIXED VOLTAGE REGULATORS | |||
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MC79L00, A Series
TYPICAL CHARACTERISTICS
(TA = +25°C, unless otherwise noted.)
Figure 3. Dropout Characteristics
8.0
MC79L05C
6.0
VO = â5.0 V
TJ = 25°C
IO = 1.0 mA
IO = 100 mA
4.0
2.0
IO = 40 mA
0
0
â2.0
â4.0
â6.0
â0.8
â10
Vin, INPUT VOLTAGE (V)
Figure 4. Dropout Voltage versus
Junction Temperature
â2.5
â2.0
IO = 70 mA
â1.5
â1.0
Dropout of Regulation is
defined when
â0.5 âVO = 2% of VO
IO = 1.0 mA
IO = 40 mA
0
0
25
50
75
100
125
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Input Bias Current versus
Ambient Temperature
4.2
4.0
3.8
3.6
3.4
MC79L05C
3.2 Vin = â10 V
VO = â5.0 V
3.0 IO = 40 mA
0
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
Figure 6. Input Bias Current versus
Input Voltage
5.0
4.0
3.0
MC79L05C
VO = â5.0 V
2.0
IO = 40 mA
1.0
0
0 â5.0 â10 â15 â20 â25 â30 â35 â40
Vin, INPUT VOLTAGE (V)
Figure 7. Maximum Average Power Dissipation
versus Ambient Temperature (TOâ92)
10,000
1,000
No Heatsink
100
RÎJA = 200°C/W
PD(max) to 25°C = 625 mW
10
25
50
75
100
125
150
TA, AMBIENT TEMPERATURE (°C)
Figure 8. SOPâ8 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
ÃÃÃÃÃÃÃÃÃÃÃÃÃ L
2.0 oz.
Copper
ÃÃÃ ÃÃÃ L
1.6
1.2
3.0 mm
50
0.8
RθJA
30
0.4
0
10
20
30
40
50
L, LENGTH OF COPPER (mm)
MOTOROLA ANALOG IC DEVICE DATA
5
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