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PDF MC78L00A Data sheet ( Hoja de datos )

Número de pieza MC78L00A
Descripción Three-Terminal Low Current Positive Voltage Regulators
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MC78L00A Series
Three-Terminal Low Current
Positive Voltage Regulators
The MC78L00A Series of positive voltage regulators are
inexpensive, easy–to–use devices suitable for a multitude of
applications that require a regulated supply of up to 100 mA. Like
their higher powered MC7800 and MC78M00 Series cousins, these
regulators feature internal current limiting and thermal shutdown
making them remarkably rugged. No external components are
required with the MC78L00 devices in many applications.
These devices offer a substantial performance advantage over the
traditional zener diode–resistor combination, as output impedance
and quiescent current are substantially reduced.
Wide Range of Available, Fixed Output Voltages
Low Cost
Internal Short Circuit Current Limiting
Internal Thermal Overload Protection
No External Components Required
Complementary Negative Regulators Offered (MC79L00A Series)
Representative Schematic Diagram
15k
Q1
3.8k
Q3 Q5
Q4 Q6
Input
Q11
Q12
Q10
5.0k 3.0 Output
0–25k
1.2k
Z1 Q2
420
1.9k 19k 2.2k
C Q9
Q8
Q7
1.0k
2.85k
Ground
Standard Application
Input
Cin*
0.33µF
MC78LXXA
Output
CO**
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 input ripple voltage.
*Cin is required if regulator is located an *appreciable distance from power
supply filter.
**CO is not needed for stability; however, it does *improve transient response.
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Pin: 1. Output
2. Ground
1 3. Input
2
3
TO–92
P SUFFIX
CASE 29
8
1
SOP–8*
D SUFFIX
CASE 751
*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 modification decreases
package thermal resistance and increases power
dissipation capability when appropriately mounted on
a printed circuit board. SOP–8 conforms to all exter-
nal dimensions of the standard SO–8 package.
PIN CONNECTIONS
VOUT 1
GND 2
GND 3
NC 4
8 VIN
7 GND
6 GND
5 NC
(Top View)
DEVICE TYPE/NOMINAL VOLTAGE
5% Output Voltage Accuracy
Voltage
MC78L05AC
MC78L08AC
MC78L09AC
MC78L12AC
MC78L15AC
MC78L18AC
MC78L24AC
5.0
8.0
9.0
12
15
18
24
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 1999
October, 1999 – Rev. 0
1
Publication Order Number:
MC78L00A/D

1 page




MC78L00A pdf
MC78L00A Series
ELECTRICAL CHARACTERISTICS (VI = 27 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, 0°C < TJ < +125°C, unless otherwise noted.)
MC78L18AC
Characteristics
Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C)
Line Regulation
(TJ = +25°C, IO = 40 mA)
21.4 Vdc VI 33 Vdc
20.7 Vdc VI 33 Vdc
22 Vdc VI 33 Vdc
21 Vdc VI 33 Vdc
Load Regulation
(TJ = +25°C, 1.0 mA IO 100 mA)
(TJ = +25°C, 1.0 mA IO 40 mA)
Output Voltage
(21.4 Vdc VI 33 Vdc, 1.0 mA IO 40 mA)
(20.7 Vdc VI 33 Vdc, 1.0 mA IO 40 mA)
(VI = 27 V, 1.0 mA IO 70 mA)
(VI = 27 V, 1.0 mA IO 70 mA)
Input Bias Current
(TJ = +25°C)
(TJ = +125°C)
Input Bias Current Change
(22 Vdc VI 33 Vdc)
(21 Vdc VI 33 Vdc)
(1.0 mA IO 40 mA)
Output Noise Voltage
(TA = +25°C, 10 Hz f 100 kHz)
Ripple Rejection (IO = 40 mA,
f = 120 Hz, 23 V VI 33 V, TJ = +25°C)
Dropout Voltage
(TJ = +25°C)
VO 17.3 18 18.7 Vdc
Regline
45 325 mV
Regload
VO
35 275
mV
30 170
15 85
Vdc
17.1 – 18.9
17.1 – 18.9
IIB mA
– 3.1 6.5
– – 6.0
IIB mA
– – 1.5
– – 0.1
Vn
– 150 –
µV
RR 33 48 – dB
VI – VO – 1.7 – Vdc
ELECTRICAL CHARACTERISTICS (VI = 33 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, 0°C < TJ < +125°C, unless otherwise noted.)
MC78L24AC
Characteristics
Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C)
Line Regulation
(TJ = +25°C, IO = 40 mA)
27.5 Vdc VI 38 Vdc
28 Vdc VI 80 Vdc
27 Vdc VI 38 Vdc
Load Regulation
(TJ = +25°C, 1.0 mA IO 100 mA)
(TJ = +25°C, 1.0 mA IO 40 mA)
Output Voltage
(28 Vdc VI 38 Vdc, 1.0 mA IO 40 mA)
(27 Vdc VI 38 Vdc, 1.0 mA IO 40 mA)
(28 Vdc VI = 33 Vdc, 1.0 mA IO 70 mA)
(27 Vdc VI 33 Vdc, 1.0 mA IO 70 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 (IO = 40 mA,
f = 120 Hz, 29 V VI 35 V, TJ = +25°C)
Dropout Voltage
(TJ = +25°C)
VO 23 24 25 Vdc
Regline
mV
Regload
VO
––
50 300
60 350
mV
40 200
20 100
Vdc
22.8 – 25.2
22.8 – 25.2
IIB mA
– 3.1 6.5
– – 6.0
IIB mA
– – 1.5
– – 0.1
Vn
– 200 –
µV
RR 31 45 – dB
VI – VO – 1.7 – Vdc
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