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PDF ( 数据手册 , 数据表 ) 7805CT

零件编号 7805CT
描述 MC7805CT
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7805CT 数据手册, 描述, 功能
MC7800, MC7800A,
NCV7805
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1.0 A Positive Voltage
Regulators
These voltage regulators are monolithic integrated circuits designed
as fixed−voltage regulators for a wide variety of applications
including local, on−card regulation. These regulators employ internal
current limiting, thermal shutdown, and safe−area compensation. With
adequate heatsinking they can deliver output currents in excess of
1.0 A. Although designed primarily as a fixed voltage regulator, these
devices can be used with external components to obtain adjustable
voltages and currents.
Output Current in Excess of 1.0 A
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe−Area Compensation
Output Voltage Offered in 2% and 4% Tolerance
Available in Surface Mount D2PAK−3, DPAK−3 and Standard
3−Lead Transistor Packages
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
Pb−Free Packages are Available
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted)
Value
Unit
Rating
Symbol 369C 221A 936
Input Voltage
(5.0 − 18 V)
(24 V)
VI
35 Vdc
40
Power Dissipation
Thermal Resistance,
Junction−to−Ambient
PD
RqJA
Internally Limited
W
92 65 Figure °C/W
14
Thermal Resistance,
Junction−to−Case
RqJC 5.0 5.0 5.0 °C/W
Storage Junction Temperature
Range
Tstg
−65 to +150
°C
Operating Junction Temperature
TJ
+150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
*This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL_STD_883, Method 3015.
Machine Model Method 200 V.
© Semiconductor Components Industries, LLC, 2006
August, 2006 − Rev. 15
1
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1
2
3
TO−220−3
T SUFFIX
CASE 221AB
Heatsink surface
connected to Pin 2.
Pin 1. Input
D2PAK−3
2. Ground D2T SUFFIX
1
3. Output
CASE 936
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
4
12
3
DPAK−3
DT SUFFIX
CASE 369C
STANDARD APPLICATION
Input
Cin*
0.33 mF
MC78XX
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.
XX, These two digits of the type number
indicate nominal 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. Values
of less than 0.1 mF could cause instability.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 22 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 28 of this data sheet.
Publication Order Number:
MC7800/D







7805CT pdf, 数据表
MC7800, MC7800A, NCV7805
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 1.0 A, TJ = Tlow to Thigh (Note 11), unless otherwise nowtewd)w.DataSheet4U.com
MC7808AB/MC7808AC
Characteristic
Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA IO 1.0 A, PD 15 W)
10.6 Vdc Vin 23 Vdc
Line Regulation (Note 12)
10.6 Vdc Vin 25 Vdc, IO = 500 mA
11 Vdc Vin 17 Vdc, IO = 1.0 A
10.4 Vdc Vin 23 Vdc, TJ = 25°C
VO 7.84 8.0 8.16 Vdc
VO 7.7 8.0 8.3 Vdc
Regline
mV
− 6.0 15
− 1.7 18
− 5.0 15
Load Regulation (Note 12)
5.0 mA IO 1.5 A, TJ = 25°C
5.0 mA IO 1.0 A
250 mA IO 750 mA
Regload
mV
− 1.4 25
− 1.0 25
− 0.22 15
Quiescent Current
Quiescent Current Change
11 Vdc Vin 25 Vdc, IO = 500 mA
10.6 Vdc Vin 23 Vdc, IO = 1.0 A, TJ = 25°C
5.0 mA IO 1.0 A
IB − 3.3 6.0 mA
DIB mA
− − 0.8
− − 0.8
− − 0.5
Ripple Rejection
11.5 Vdc Vin 21.5 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Output Noise Voltage (TA = 25°C)
10 Hz f 100 kHz
RR 56 62
VI − VO − 2.0
Vn − 10
− dB
− Vdc
mV/VO
Output Resistance f = 1.0 kHz
rO − 0.9 − mW
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
ISC − 0.2 − A
Peak Output Current (TJ = 25°C)
Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage
TCVO
− −0.4 − mV/°C
11. Tlow = 0°C for MC78XXAC, C Thigh = +125°C for MC78XXAC, C, NCV7805
= *40°C for MC78XXB, MC78XXAB, NCV7805
12. 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 cycle is used.
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7805CT equivalent, schematic
MC7800, MC7800A, NCV7805
ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 1.0 A, TJ = Tlow to Thigh (Note 26), unless otherwise nowtewd)w.DataSheet4U.com
MC7818AC
Characteristic
Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA IO 1.0 A, PD 15 W)
21 Vdc Vin 33 Vdc
Line Regulation (Note 27)
21 Vdc Vin 33 Vdc, IO = 500 mA
24 Vdc Vin 30 Vdc, IO = 1.0 A
24 Vdc Vin 30 Vdc, IO = 1.0 A, TJ = 25°C
20.6 Vdc Vin 33 Vdc, IO = 1.0 A, TJ = 25°C
Load Regulation (Note 27)
5.0 mA IO 1.5 A, TJ = 25°C
5.0 mA IO 1.0 A
250 mA IO 750 mA
Quiescent Current
Quiescent Current Change
21 Vdc Vin 33 Vdc, IO = 500 mA
21.5 Vdc Vin 30 Vdc, TJ = 25°C
5.0 mA IO 1.0 A
Ripple Rejection
VO
17.64
18
18.36
Vdc
VO 17.3 18 18.7 Vdc
Regline
mV
− 9.5 22
− 3.2 25
− 3.2 10.5
− 8.0 22
Regload
mV
− 2.0 25
− 1.8 25
− 1.5 15
IB − 3.5 6.0 mA
DIB mA
− − 0.8
− − 0.8
− − 0.5
RR
53 57
− dB
22 Vdc Vin 32 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Output Noise Voltage (TA = 25°C)
10 Hz f 100 kHz
VI − VO − 2.0 − Vdc
Vn − 10 − mV/VO
Output Resistance f = 1.0 kHz
rO − 1.3 − mW
Short Circuit Current Limit (TA = 25°C)
ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage
TCVO
− −1.5 − mV/°C
26. Tlow = 0°C for MC78XXAC, C Thigh = +125°C for MC78XXAC, C, NCV7805
= *40°C for MC78XXB, MC78XXAB, NCV7805
27. 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 cycle is used.
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