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PDF MC79L12A Data sheet ( Hoja de datos )
| Número de pieza | MC79L12A | |
| Descripción | Negative Voltage Regulators | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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ON Semiconductort
100 mA Negative Voltage
Regulators
The MC79L00, A Series negative voltage regulators are
inexpensive, easy–to–use devices suitable for numerous applications
requiring up to100 mA. Like the higher powered MC7900 Series
negative regulators, this series features thermal shutdown and current
limiting, making them remarkably rugged. In most applications, no
external components are required for operation.
The MC79L00 devices are useful for on–card regulation or any
other application where a regulated negative voltage at a modest
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current level is needed. These regulators offer substantial advantage
over the common resistor/zener diode approach.
• No External Components Required
• Internal Short Circuit Current Limiting
• Internal Thermal Overload Protection
• Low Cost
• Complementary Positive Regulators Offered (MC78L00 Series)
• Available in Either ±5% (AC) or ±10% (C) Selections
MC79L00,
MC79L00A Series
THREE–TERMINAL LOW
CURRENT NEGATIVE FIXED
VOLTAGE REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 29
Pin 1. Ground
2. Input
3. Output
1
2
3
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8)*
Pin 1. Vout
2. Vin
3. Vin
4. NC
5. GND
6. Vin
7. Vin
8. NC
Representative Schematic Diagram
R R6
R8
Q10
5 Q5
R18
R1
Q4
R9
Gnd
R17
R7
Q1
R2
Z1
R3
R4
Q8 Q14
Q9
R16
Output
Q12
C Q2
Q13
Q6 Q7
R10 R11
Q11
R14 R15
Input
*ĂAutomotive temperature range selections are available with special test conditions
and additional tests in 5, 12 and 15 V devices. Contact your local ON Semiconductor
sales office for information.
*SOP–8 is an internally modified SO–8 package.
Pins 2, 3, 6, and 7 are electrically common to the
die attach flag. This internal lead frame modifica-
tion decreases package thermal resistance and
increases power dissipation capability when
appropriately mounted on a printed circuit board.
SOP–8 conforms to all external dimensions of the
standard SO–8 package.
Device No.
±10%
MC79L05C
MC79L12C
MC79L15C
MC79L18C
MC79L24C
Device No.
5%
MC79L05AC
MC79L12AC
MC79L15AC
MC79L18AC
MC79L24AC
Nominal
Voltage
–5.0
–12
–15
–18
–24
ORDERING INFORMATION
Device
MC79LXXACD*
Operating
Temperature Range
MC79LXXACP
MC79LXXCP
MC79LXXABD*
MC79LXXABP*
TJ = 0° to +125°C
TJ = –40° to +125°C
XX indicates nominal voltage
Package
SOP–8
Plastic Power
Plastic Power
SOP–8
Plastic Power
© Semiconductor Components Industries, LLC, 2002
January, 2002 – Rev. 4
1
Publication Order Number:
MC79L00/D
1 page  
MC79L00, MC79L00A Series
8.0
MC79L05C
6.0
VO = -5.0 V
TJ = 25°C
4.0
2.0
TYPICAL CHARACTERISTICS
(TA = +25°C, unless otherwise noted.)
-2.5
IO = 1.0 mA
IO = 100 mA
IO = 40 mA
-2.0 IO = 70 mA
-1.5
-1.0
Dropout of Regulation is
defined when
-0.5 ∆VO = 2% of VO
IO = 1.0 mA
IO = 40 mA
0
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-2.0 -4.0 -6.0
Vin, INPUT VOLTAGE (V)
-0.8
Figure 3. Dropout Characteristics
-10
0
0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 4. Dropout Voltage versus
Junction Temperature
4.2
4.0
3.8
3.6
3.4
MC79L05C
3.2 Vin = -10 V
VO = -5.0 V
3.0 IO = 40 mA
0
0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
Figure 5. Input Bias Current versus
Ambient Temperature
125
5.0
4.0
3.0
MC79L05C
VO = -5.0 V
2.0 IO = 40 mA
1.0
0
0 -5.0 -10 -15 -20 -25 -30 -35 -40
Vin, INPUT VOLTAGE (V)
Figure 6. Input Bias Current versus
Input Voltage
10,000
1,000
No Heatsink
100
RΘJA = 200°C/W
PD(max) to 25°C = 625 mW
10
25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
150
Figure 7. Maximum Average Power Dissipation
versus Ambient Temperature (TO–92)
170 3.2
150 2.8
PD(max) for TA = +50°C
130 2.4
110 Graph represents symmetrical layout 2.0
ÎÎÎÎÎÎÎ90
L
2.0 oz.
Copper
1.6
ÎÎÎÎÎÎÎ70 1.2
L 3.0 mm
50 0.8
RθJA
30 0.4
0 10 20 30 40 50
L, LENGTH OF COPPER (mm)
Figure 8. SOP–8 Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
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| PDF Descargar | [ Datasheet MC79L12A.PDF ] | |
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