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MC79L12A 데이터시트 PDF




ON Semiconductor에서 제조한 전자 부품 MC79L12A은 전자 산업 및 응용 분야에서
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부품번호 MC79L12A 기능
기능 Negative Voltage Regulators
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MC79L12A 데이터시트, 핀배열, 회로
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




MC79L12A pdf, 반도체, 판매, 대치품
MC79L00, MC79L00A Series
ELECTRICAL CHARACTERISTICS (VI = –33 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, 0°C < TJ < +125°C, unless otherwise noted).
MC79L24C
MC79L24AC
Characteristics
Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = +25°C)
Input Regulation
(TJ = +25°C)
–27 Vdc VI –38 Vdc
–27.5 Vdc VI –38 Vdc
–28 Vdc VI –38 Vdc
Load Regulation
TJ = +25°C, 1.0 mA IO 100 mA
1.0 mA IO 40 mA
Output Voltage
–27 Vdc VI –38 V, 1.0 mA IO 40 mA
–28
www.DataSheet4U.coVmI =
Vdc
–33
VI –38 Vdc, 1.0
Vdc, 1.0 mA IO
mA IO
70 mA
40
mA
Input Bias Current
(TJ = +25°C)
(TJ = +125°C)
Input Bias Current Change
–28 Vdc VI –38 Vdc
1.0 mA IO 40 mA
Output Noise Voltage
(TA = +25°C, 10 Hz f 100 kHz)
Ripple Rejection
(–29 VI –35 Vdc, f = 120 Hz, TJ = +25°C)
Dropout Voltage
IO = 40 mA, TJ = +25°C
VO –22.1 –24 –25.9 –23 –24 –25 Vdc
Regline
mV
– – – – – 350
– – 350 – – –
– – 300 – – 300
Regload
– 200 –
– 100 –
mV
– 200
– 100
VO Vdc
– – – –22.8 – –25.2
–21.4 – –26.4 – – –
–21.4 – –26.4 –22.8 – –25.2
IIB mA
– – 6.5 – – 6.5
– – 6.0 – – 6.0
IIB mA
– – 1.5 – – 1.5
– – 0.2 – – 0.1
Vn
– 200 –
– 200 –
µV
RR 30 43 – 31 47 – dB
|VI–VO|
1.7
– 1.7 – Vdc
APPLICATIONS INFORMATION
Design Considerations
The MC79L00, A Series of fixed voltage regulators are
designed with Thermal Overload Protections that shuts
down the circuit when subjected to an excessive power
overload condition, Internal Short Circuit Protection that
limits the maximum current the circuit will pass.
In many low current applications, compensation
capacitors are not required. However, it is recommended
that the regulator input be bypassed with a capacitor if the
regulator is connected to the power supply filter with long
wire length, or if the output load capacitance is large. An
input bypass capacitor should be selected to provide good
high–frequency characteristics to insure stable operation
under all load conditions. A 0.33 µF or larger tantalum,
mylar, or other capacitor having low internal impedance at
high frequencies should be chosen. The bypass capacitor
should be mounted with the shortest possible leads directly
across the regulator’s input terminals. Normally good
construction techniques should be used to minimize ground
loops and lead resistance drops since the regulator has no
external sense lead. Bypassing the output is also
recommended.
+Vin
0.33µF
MC78LXX
+VO
0.1µF
Input
CI*
0.33µF
MC79LXX
Output
CO**
0.1µF
-Vin
0.33µF
MC79LXX
0.1µF
-VO
Figure 1. Positive and Negative Regulator
A common ground is required between the input and the output
voltages. The input voltage must remain typically 2.0 V above
the output voltage even during the low point on the ripple voltage.
ă* CI is required if regulator is located an appreciable
ă* distance from the power supply filter
** CO improves stability and transient response.
Figure 2. Standard Application
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MC79L12A 전자부품, 판매, 대치품
MC79L00, MC79L00A Series
PACKAGE DIMENSIONS
D SUFFIX
PLASTIC PACKAGE
CASE 751–07
ISSUE W
–X–
A
B
–Y–
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8
1
G
5
4
–Z–
H
D
S 0.25 (0.010) M Y M
C
SEATING
PLANE
N X 45_
0.10 (0.004)
M
K
0.25 (0.010) M Z Y S X S
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER
SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN
EXCESS OF THE D DIMENSION AT MAXIMUM
MATERIAL CONDITION.
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 4.80 5.00 0.189 0.197
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.053 0.069
D 0.33 0.51 0.013 0.020
G 1.27 BSC
0.050 BSC
H 0.10 0.25 0.004 0.010
J J 0.19 0.25 0.007 0.010
K 0.40 1.27 0.016 0.050
M 0_ 8_ 0_ 8_
N 0.25 0.50 0.010 0.020
S 5.80 6.20 0.228 0.244
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