MC78L05 Motorola, MC78L05 Datasheet

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MC78L05

Manufacturer Part Number
MC78L05
Description
Three-Terminal Low Current Positive Voltage Regulators
Manufacturer
Motorola
Datasheet

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Three-Terminal Low Current
Positive Voltage Regulators
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.
components are required with the MC78L00 devices in many applications.
traditional zener diode–resistor combination, as output impedance and
quiescent current are substantially reduced.
MC78LXXACD*
MC78LXXACP
MC78LXXCP
MC78LXXABD*
MC78LXXABP*
XX indicates nominal voltage
*Available in 5, 8, 9, 12 and 15 V devices.
MOTOROLA ANALOG IC DEVICE DATA
The MC78L00, A Series of positive voltage regulators are inexpensive,
These devices offer a substantial performance advantage over the
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 (MC79L00 Series)
Available in either 5% (AC) or 10% (C) Selections
15k
Z1
Device
Q1
3.8k
1.2k
420
Q2
Representative Schematic Diagram
Q4
1.9k
Q3
ORDERING INFORMATION
Q6
Q7
C
1.0k
19k
Temperature Range
T J = –40 to +125 C
T J = –40 to +125 C
T
T J = 0 to +125 C
Q5
Q8
Operating
2.2k
0
Q9
12 C
Q10
Q11
5.0k
Q12
0–25k
3.0
2.85k
Plastic Power
Plastic Power
Plastic Power
No external
Package
SOP–8
SOP–8
Ground
Output
Input
* SOP–8 is an internally modified SO–8 package.
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.
**C O is not needed for stability; however, it does
Motorola, Inc. 1996
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 external dimensions of the
standard SO–8 package.
*C in is required if regulator is located an
*appreciable distance from power supply filter.
*improve transient response.
MC78L05C
MC78L08C
MC78L09C
MC78L12C
MC78L15C
MC78L18C
MC78L24C
A common ground is required between the input
0.33 F
10%
DEVICE TYPE/NOMINAL VOLTAGE
Input
C in *
MC78L00, A
P SUFFIX
CASE 29
8
Pin 1. Output
Pin 1. V out
Standard Application
1
Order this document by MC78L00/D
2. GND
3. Input
2. GND
3. GND
4. NC
Series
MC78L05AC
MC78L08AC
MC78L09AC
MC78L12AC
MC78L15AC
MC78L18AC
MC78L24AC
MC78LXX
5%
PLASTIC PACKAGE
5. NC
6. GND
7. GND
8. V in
1
2
D SUFFIX
CASE 751
(SOP–8)*
3
C O **
Output
Voltage
5.0
8.0
9.0
12
15
18
24
Rev 3
1

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MC78L05 Summary of contents

Page 1

... GND 1 3. Input SUFFIX PLASTIC PACKAGE CASE 751 8 (SOP–8)* 1 Pin 1. V out GND 6. GND 3. GND 7. GND Standard Application MC78LXX Input Output 0.33 F DEVICE TYPE/NOMINAL VOLTAGE 10% 5% Voltage MC78L05AC 5.0 MC78L08AC 8.0 MC78L09AC 9.0 MC78L12AC 12 MC78L15AC 15 MC78L18AC 18 MC78L24AC 24 Rev 3 1 ...

Page 2

... Hz +25 C) Dropout Voltage ( + MC78L00, A Series Symbol Value Unit Vdc stg –65 to +150 +150 C MC78L05AC, AB Symbol Min Typ Max V O 4.8 5.0 5.2 Reg line – 55 150 – 45 100 Reg load – – ...

Page 3

... Vdc) (1 mA) Output Noise Voltage ( + 100 kHz) Ripple Rejection ( mA 120 Hz +25 C) Dropout Voltage ( +25 C) MOTOROLA ANALOG IC DEVICE DATA MC78L00, A Series MC78L09AC, AB Symbol Min Typ Max V O 8.6 9.0 9.4 Reg line – 20 175 – ...

Page 4

... I IB – 3.1 6.5 – – 6 – – 1.5 – – 0 – 150 – – – – 1.7 – MOTOROLA ANALOG IC DEVICE DATA MC78L15C Min Typ Max Unit 13.8 15 16.2 Vdc mV – 130 300 – 110 250 mV – 25 150 – Vdc 13.5 – ...

Page 5

... mA) Output Noise Voltage ( + 100 kHz) Ripple Rejection ( mA 120 Hz +25 C) Dropout Voltage ( +25 C) MOTOROLA ANALOG IC DEVICE DATA MC78L00, A Series MC78L24AC Symbol Min Typ Max Reg line – – ...

Page 6

... 125 150 L, LENGTH OF COPPER (mm) MOTOROLA ANALOG IC DEVICE DATA Junction Temperature 1 100 125 versus Input Voltage MC78L05C V out = 5 INPUT VOLTAGE (V) 3.2 2.8 P D(max) for 2.4 2.0 Graph represents symmetrical layout Î ...

Page 7

... MC78L05 Input R 0. The MC78L00 regulators can also be used as a current source when connected as above. In order to minimize dissipation the MC78L05C is chosen in this application. Resistor R determines the current as follows: 5 3.8 mA over line and load changes For example, a 100 mA current source would require 1/2 W resistor and the output voltage compliance would be the input voltage less 7 V ...

Page 8

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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