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Fairchild Semiconductor Electronic Components Datasheet

MC7812AE Datasheet

3-Terminal 1A Positive Voltage Regulator

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www.fairchildsemi.com
MC78XXE/LM78XXE/MC78XXAE
3-Terminal 1A Positive Voltage Regulator
Features
• Output Current up to 1A
• Output Voltages of 5, 6, 8, 9, 12, 15, 18, 24V
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Protection
Description
The MC78XXE/LM78XXE/MC78XXAE series of three
terminal positive regulators are available in the
TO-220/D-PAK package and with several fixed output
voltages, making them useful in a wide range of
applications. Each type employs internal current limiting,
thermal shut down and safe operating area protection,
making it essentially indestructible. If adequate heat sinking
is provided, they can deliver over 1A output current.
Although designed primarily as fixed voltage regulators,
these devices can be used with external components to
obtain adjustable voltages and currents.
TO-220
GND
Internal Block Digram
1
D-PAK
GND
1
1. Input 2. GND 3. Output
INPUT
1
CURRENT
GENERATOR
STARTING
CIRCUIT
REFERENCE
VOLTAGE
SERIES
PASS
ELEMENT
SOA
PROTECTION
ERROR
AMPLIFIER
OUTPUT
3
©2003 Fairchild Semiconductor Corporation
THERMAL
PROTECTION
GND
2
Rev. 1.0.0


Fairchild Semiconductor Electronic Components Datasheet

MC7812AE Datasheet

3-Terminal 1A Positive Voltage Regulator

No Preview Available !

MC78XXE/LM78XXE/MC78XXAE
Absolute Maximum Ratings
Parameter
Input Voltage (for VO = 5V to 18V)
(for VO = 24V)
Thermal Resistance Junction-Cases (TO-220)
Thermal Resistance Junction-Air (TO-220)
Operating Temperature Range
Storage Temperature Range
Symbol
VI
VI
RθJC
RθJA
TOPR
TSTG
Value
35
40
5
65
0 ~ +125
-65 ~ +150
Unit
V
V
°C/W
°C/W
°C
°C
Electrical Characteristics (MC7805E/LM7805E)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI = 10V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified)
Parameter
Symbol
Conditions
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Output Voltage Drift (Note2)
Output Noise Voltage
Ripple Rejection (Note2)
Dropout Voltage
Output Resistance (Note2)
Short Circuit Current
Peak Current (Note2)
VO
Regline
Regload
IQ
IQ
VO/T
VN
RR
VDrop
rO
ISC
IPK
TJ = +25°C
5.0mA Io 1.0A, PO 15W
VI = 7V to 20V
TJ = +25°C
VO = 7V to 25V
VI = 8V to 12V
TJ = +25°C
IO = 5.0mA to1.5A
IO =250mA to
750mA
TJ = +25°C
IO = 5mA to 1.0A
VI = 7V to 25V
IO = 5mA
f = 10Hz to 100kHz, TA = +25°C
f = 120Hz
VO = 8V to 18V
IO = 1A, TJ =+25°C
f = 1kHz
VI = 35V, TA =+25°C
TJ = +25°C
MC7805E/LM7805E
Min. Typ. Max.
4.8 5.0 5.2
Unit
4.75 5.0 5.25
V
- 4.0 100
mV
- 1.6 50
- 9 100
mV
- 4 50
- 5.0 8.0 mA
- 0.03 0.5
mA
- 0.3 1.3
- -0.8 - mV/°C
- 42 - µV/Vo
62 73
-
dB
- 2-
- 15 -
- 230 -
- 2.2 -
V
m
mA
A
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
2. These parameters, although guaranteed, are not 100% tested in production.
2


Part Number MC7812AE
Description 3-Terminal 1A Positive Voltage Regulator
Maker Fairchild Semiconductor
Total Page 26 Pages
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