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PDF ( 数据手册 , 数据表 ) MC7805

零件编号 MC7805
描述 3-Terminal 1A Positive Voltage Regulator
制造商 Fairchild Semiconductor
LOGO Fairchild Semiconductor LOGO 


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MC7805 数据手册, 描述, 功能
www.fairchildsemi.com
MC78XX/LM78XX/MC78XXA
3-Terminal 1A Positive Voltage Regulator
Features
• Output Current up to 1A
• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Protection
Description
The MC78XX/LM78XX/MC78XXA 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
1
D-PAK
1
1. Input 2. GND 3. Output
Internal Block Digram
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.1







MC7805 pdf, 数据表
MC78XX/LM78XX/MC78XXA
Electrical Characteristics (MC7815)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =23V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Parameter
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
Conditions
VO
Regline
Regload
IQ
IQ
VO/T
VN
RR
VDrop
rO
ISC
IPK
TJ =+25 oC
5.0mA IO 1.0A, PO 15W
VI = 17.5V to 30V
TJ =+25 oC
VI = 17.5V to 30V
VI = 20V to 26V
TJ =+25 oC
IO = 5mA to 1.5A
IO = 250mA to
750mA
TJ =+25 oC
IO = 5mA to 1.0A
VI = 17.5V to 30V
IO = 5mA
f = 10Hz to 100KHz, TA =+25 oC
f = 120Hz
VI = 18.5V to 28.5V
IO = 1A, TJ=+25 oC
f = 1KHz
VI = 35V, TA=+25 oC
TJ =+25 oC
MC7815
Min. Typ. Max.
14.4 15 15.6
Unit
14.25 15 15.75
V
- 11 300
mV
- 3 150
- 12 300
mV
- 4 150
- 5.2 8.0 mA
- - 0.5
mA
- - 1.0
- -1 - mV/ oC
- 90 - µV/Vo
54 70
-
dB
- 2-
- 19 -
- 250 -
- 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.
8







MC7805 equivalent, schematic
MC78XX/LM78XX/MC78XXA
Electrical Characteristics (MC7812A)
(Refer to the test circuits. 0°C < TJ < 125°C, Io =1A, V I = 19V, C I=0.33µF, C O=0.1µF, unless otherwise specified)
Parameter
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
VO
Regline
Regload
IQ
IQ
V/T
VN
RR
VDrop
rO
ISC
IPK
Conditions
TJ =+25 °C
IO = 5mA to 1A, PO 15W
VI = 14.8V to 27V
VI= 14.8V to 30V
IO = 500mA
VI= 16V to 22V
TJ =+25 °C
VI= 14.5V to 27V
VI= 16V to 22V
TJ =+25 °C
IO = 5mA to 1.5A
IO = 5mA to 1.0A
IO = 250mA to 750mA
TJ =+25°C
VI = 15V to 30V, TJ=+25 °C
VI = 14V to 27V, IO = 500mA
IO = 5mA to 1.0A
IO = 5mA
f = 10Hz to 100KHz
TA =+25°C
f = 120Hz, IO = 500mA
VI = 14V to 24V
IO = 1A, TJ =+25°C
f = 1KHz
VI= 35V, TA =+25 °C
TJ=+25 °C
Min. Typ. Max.
11.75 12 12.25
11.5 12 12.5
Unit
V
- 10 120
- 4 120 mV
- 10 120
- 3 60
- 12 100
- 12 100 mV
- 5 50
- 5.1 6.0 mA
- 0.8
- 0.8 mA
- 0.5
- -1.0 - mV/°C
- 10
- µV/Vo
- 60
-
- 2.0
-
- 18
-
- 250 -
- 2.2
-
dB
V
m
mA
A
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
16










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