Rev. B/LX
LM78xxA
1A Standard Positive Voltage Regulator
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1A Standard Positive Voltage Regulator
General Description
• The LM78xxA series is three terminal standard positive voltage regulator designed for a wide range of applications that required supply current up to 1A.
• The LM78xxA series is available in 7 fixed output voltage:5V,6V,8V,9V,12V,15V and 18V. • The LM78xxA series provides internal current limiting, thermal shutdown protection and
Safe-area operation compensation which make them virtually immune from output load, and the output current could up to 1A if adequate heat sinking provide
• The LM78xxA is available in TO-220,TO-220F and DPAK (TO-252) packages. .
Features • Output Current up to 1A • Maximum Input voltage up to 36V • Output Voltage Accuracy of ±4% over full temperature • Thermal Overload Protection • Short Circuit Current Limiting • Output Transistor safe operation area (SOA) Protection • Wide Operation Temperature Range: -40°C to 125°C • RoHS Compliance and Halogen Free
Applications
TO-220
• High Efficiency Linear Regulator • Post Regulation for Switching Supply • Microprocessor Power Supply • Mother Board
TO-220F
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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Ordering Information
Pin Configuration
TO-220 TO-220F DPAK (TO-252)
1: INPUT 2: GND 3: OUTPUT 1: INPUT 2: GND 3: OUTPUT 1: INPUT 2: GND 3: OUTPUT
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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Marking Information PN Marking Code Outline Temperatue
Range ROHS Halogen Free ROHS Halogen FreePacking Type
LM7805AT-08-TU LM7805AT-08-UG AS7805AT-E1 AS7805AT-G1
LM7806AT-08-TU LM7806AT-08-UG AS7806AT-E1 AS7805AT-G1
LM7808AT-08-TU LM7808AT-08-UG AS7808AT-E1 AS7805AT-G1
LM7809AT-08-TU LM7809AT-08-UG AS7809AT-E1 AS7805AT-G1
LM7812AT-08-TU LM7812AT-08-UG AS7812AT-E1 AS7805AT-G1
LM7815AT-08-TU LM7815AT-08-UG AS7815AT-E1 AS7805AT-G1
TO-220 -40°C to 125°C
LM7818AT-08-TU LM7818AT-08-UG AS7818AT-E1 AS7805AT-G1
Tube
LM7805AF-08-TU LM7805AF-08-UG AS7805ATF-E1 AS7805ATF-G1
LM7806AF-08-TU LM7806AF-08-UG AS7806ATF-E1 AS7805ATF-G1
LM7808AF-08-TU LM7808AF-08-UG AS7808ATF-E1 AS7805ATF-G1
LM7809AF-08-TU LM7809AF-08-UG AS7809ATF-E1 AS7805ATF-G1
LM7812AF-08-TU LM7812AF-08-UG AS7812ATF-E1 AS7805ATF-G1
LM7815AF-08-TU LM7815AF-08-UG AS7815ATF-E1 AS7805ATF-G1
TO-220F -40°C to 125°C
LM7818AF-08-TU LM7818AF-08-UG AS7818ATF-E1 AS7805ATF-G1
Tube
LM7805AD-08-TU LM7805AD-08-UG Tube
LM7805AD-08-TR30 LM7805AD-08-RG30 AS7805AD-E1 AS7805AD-G1 Tape
&Reel LM7806AD-08-TU LM7806AD-08-UG Tube
LM7806AD-08-TR30 LM7806AD-08-RG30 AS7806AD-E1 AS7806AD-G1 Tape
&Reel LM7808AD-08-TU LM7808AD-08-UG Tube
LM7808AD-08-TR30 LM7808AD-08-RG30 AS7808AD-E1 AS7808AD-G1 Tape
&Reel LM7809AD-08-TU LM7809AD-08-UG Tube
LM7809AD-08-TR30 LM7809AD-08-RG30 AS7809AD-E1 AS7809AD-G1 Tape
&Reel LM7812AD-08-TU LM7812AD-08-UG Tube
LM7812AD-08-TR30 LM7812AD-08-RG30 AS7812AD-E1 AS7812AD-G1 Tape
&Reel LM7815AD-08-TU LM7815AD-08-UG Tube
LM7815AD-08-TR30 LM7815AD-08-RG30 AS7815AD-E1 AS7815AD-G1 Tape
&Reel LM7818AD-08-TU LM7818AD-08-UG Tube
DPAK (TO-252) -40°C to 125°C
LM7818AD-08-TR30 LM7818AD-08-RG30 AS7818AD-E1 AS7818AD-G1 Tape
&Reel
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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Functional Block Diagram
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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Absolute Maximum Ratings (Note 1)
Symbol Description Ratings Unit
VIN Input Voltage 36 V
PD Power Dissipation Internally Limited W
TLEAD Lead Temperature (Soldering 10sec) 260 °C
TJ Operating Junction Temperature 150 °C
TSTG Storage Temperature Range -65 to 150 °C TO-220
TO-220F 60 θJA Thermal Resistance (Junction to Ambient) DPAK (TO-252) 100
°C/ W
ESD ESD (Human Body Model) 6000 V
ESD ESD (Machine Model) 500 V
Recommend Operating Ratings (Note1)
Ratings Symbol Description Min. Max. Unit
LM7805A - 25
LM7806A - 26
LM7808A - 28
LM7809A - 29
LM7812A - 32
LM7815A - 32
VIN Input Voltage
LM7818A - 32
V
TJ Operating Junction Temperature Range -40 125 °C Note1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Recommend operating ratings indicate conditions for which the device is functional, but do not guarantee specific specification limits. For guarantee specification and test conditions, see the Electrical Characteristics, the guarantee specification apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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Electrical Characteristics
For LM7805A (VIN=10V, IO=1A, TJ=-40 to 125°C, unless otherwise specified) LM7805A Symbol Description
Min. Typ. Max. Unit Test Conditions
4.9 5.0 5.1 TJ=25°C VO Output Voltage
4.8 - 5.2 V VIN=7.5V to 20V,
IO=5mA to 1A, PD≤15W
∆VLINE Line Regulation - 25 50 mV VIN=7.5V to 20V, IO=500mA, TJ=25°C
∆VLOAD Load Regulation - 20 50 mV VIN=10V, IO=5mA to 1A, TJ=25°C
IQ Quiescent Current - 3.2 6.0 mA VIN=10V, IO=0
- 0.3 0.8 VIN=8V to 25V, IO=500mA, TJ=25°C ∆IQ Quiescent Current
Change - 0.08 0.5 mA
IO=5mA to 1A, TJ=25°C
PSRR Ripple Rejection - 70 - dB VIN=8V to 18V, f=120Hz, IO=500mA
VDROP Dropout Voltage - 2.0 - V ∆VO=1%, IO=1A, TJ=25°C
eN Output Noise Voltage - 10 - µV/VO f=10Hz to 100kHz, TA=25°C
RO Output Resistance - 10 - mΩ f=1kHz
ISC Short Circuit Current - 0.05 - A VIN=35V, TA=25°C
IPK Peak Output Current - 2.2 - A VIN=10V, TJ=25°C
∆VO/∆T - 0.4 - mV/°C -
(∆VO/VO)/∆T Output Voltage Temperature Coefficient - 80 - ppm/°C -
- 9 - TO-220
- 9 - TO-220F θJC Thermal Resistance (Junction to Case)
- 16 -
°C/ W
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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For LM7806A (VIN=11V, IO=1A, TJ=-40 to 125°C, unless otherwise specified) LM7806A Symbol Description
Min. Typ. Max. Unit Test Conditions
5.88 6.0 6.12 TJ=25°C VO Output Voltage
5.76 - 6.24V VIN=8.6V to 21V,
IO=5mA to 1A, PD≤15W
∆VLINE Line Regulation - 25 50 mV VIN=8.6V to 21V, IO=500mA, TJ=25°C
∆VLOAD Load Regulation - 20 50 mV VIN=11V, IO=5mA to 1A, TJ=25°C
IQ Quiescent Current - 3.2 6.0 mA VIN=11V, IO=0
- 0.3 0.8 VIN=8.6V to 21V, IO=500mA, TJ=25°C ∆IQ Quiescent Current
Change - 0.08 0.5 mA
IO=5mA to 1A, TJ=25°C
PSRR Ripple Rejection - 70 - dB VIN=9.5V to 19.5V, f=120Hz, IO=500mA
VDROP Dropout Voltage - 2.0 - V ∆VO=1%, IO=1A, TJ=25°C
eN Output Noise Voltage - 10 - µV/VO f=10Hz to 100kHz, TA=25°C
RO Output Resistance - 10 - mΩ f=1kHz
ISC Short Circuit Current - 0.05 - A VIN=35V, TA=25°C
IPK Peak Output Current - 2.2 - A VIN=11V, TJ=25°C
∆VO/∆T - 0.5 - mV/°C
(∆VO/VO)/∆T Output Voltage Temperature Coefficient - 80 - ppm/°C
- 9 - TO-220
- 9 - TO-220F θJC Thermal Resistance (Junction to Case)
- 16 -
°C/ W
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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For LM7808A (VIN=14V, IO=1A, TJ=-40 to 125°C, unless otherwise specified) LM7808A Symbol Description
Min. Typ. Max. Unit Test Conditions
7.84 8 8.16 TJ=25°C VO Output Voltage
7.7 - 8.3 V VIN=10.6V to 23V,
IO=5mA to 1A, PD≤15W
∆VLINE Line Regulation - 25 75 mV VIN=10.6V to 23V, IO=500mA, TJ=25°C
∆VLOAD Load Regulation - 25 75 mV VIN=14V, IO=5mA to 1A, TJ=25°C
IQ Quiescent Current - 3.2 6.0 mA VIN=14V, IO=0
- 0.3 0.8 VIN=10.6V to 23V, IO=500mA, TJ=25°C ∆IQ Quiescent Current
Change - 0.08 0.5 mA
IO=5mA to 1A, TJ=25°C
PSRR Ripple Rejection - 62 - dB VIN=11.5V to 21.5V, f=120Hz, IO=500mA
VDROP Dropout Voltage - 2.0 - V ∆VO=1%, IO=1A, TJ=25°C
eN Output Noise Voltage - 10 - µV/VO f=10Hz to 100kHz, TA=25°C
RO Output Resistance - 10 - mΩ f=1kHz
ISC Short Circuit Current - 0.2 - A VIN=35V, TA=25°C
IPK Peak Output Current - 2.2 - A VIN=14V, TJ=25°C
∆VO/∆T - 0.64 - mV/°C -
(∆VO/∆VO)/∆T Output Voltage Temperature Coefficient - 80 - ppm/°C -
- 9 - TO-220
- 9 - TO-220F θJC Thermal Resistance (Junction to Case)
- 16 -
°C/ W
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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For LM7809A (VIN=15V, IO=1A, TJ=-40 to 125°C, unless otherwise specified) LM7809A Symbol Description
Min. Typ. Max. Unit Test Conditions
8.82 9 9.18 TJ=25°C VO Output Voltage
8.65 - 9.35V VIN=11.5V to 23V,
IO=5mA to 1A, PD≤15W
∆VLINE Line Regulation - 25 90 mV VIN=11.5V to 23V, IO=500mA, TJ=25°C
∆VLOAD Load Regulation - 25 100 mV VIN=14V, IO=5mA to 1A, TJ=25°C
IQ Quiescent Current - 3.2 6.0 mA VIN=15V, IO=0
- 0.3 0.8 VIN=11.5V to 23V, IO=500mA, TJ=25°C ∆IQ Quiescent Current
Change - 0.08 0.5 mA
IO=5mA to 1A, TJ=25°C
PSRR Ripple Rejection - 61 - dB VIN=11.5V to 21.5V, f=120Hz, IO=500mA
VDROP Dropout Voltage - 2.0 - V ∆VO=1%, IO=1A, TJ=25°C
eN Output Noise Voltage - 10 - µV/VO f=10Hz to 100kHz, TA=25°C
RO Output Resistance - 10 - mΩ f=1kHz
ISC Short Circuit Current - 0.2 - A VIN=35V, TA=25°C
IPK Peak Output Current - 2.2 - A VIN=15V, TJ=25°C
∆VO/∆T - 0.72 - mV/°C
(∆VO/VO)/∆T Output Voltage Temperature Coefficient - 80 - ppm/°C
- 9 - TO-220
- 9 - TO-220F θJC Thermal Resistance (Junction to Case)
- 16 -
°C/ W
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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For LM7812A (VIN=19V, IO=1A, TJ=-40 to 125°C, unless otherwise specified) LM7812A Symbol Description
Min. Typ. Max. Unit Test Conditions
11.75 12 12.25 TJ=25°C VO Output Voltage
11.5 - 12.5V VIN=14.8V to 27V,
IO=5mA to 1A, PD≤15W
∆VLINE Line Regulation - 25 120 mV VIN=14.8V to 27V, IO=500mA, TJ=25°C
∆VLOAD Load Regulation - 40 120 mV VIN=19V, IO=5mA to 1A, TJ=25°C
IQ Quiescent Current - 3.4 6.0 mA VIN=19V, IO=0
- 0.3 0.8 VIN=14.8V to 30V, IO=500mA, TJ=25°C ∆IQ Quiescent Current
Change - 0.08 0.5 mA
IO=5mA to 1A, TJ=25°C
PSRR Ripple Rejection - 60 - dB VIN=15V to 25V, f=120Hz, IO=500mA
VDROP Dropout Voltage - 2.0 - V ∆VO=1%, IO=1A, TJ=25°C
eN Output Noise Voltage - 10 - µV/VO f=10Hz to 100kHz, TA=25°C
RO Output Resistance - 11 - mΩ f=1kHz
ISC Short Circuit Current - 0.2 - A VIN=35V, TA=25°C
IPK Peak Output Current - 2.2 - A VIN=18V, TJ=25°C
∆VO/∆T - 0.96 - mV/°C -
(∆VO/VO)/∆T Output Voltage Temperature Coefficient - 80 - ppm/°C -
- 9 - TO-220
- 9 - TO-220F θJC Thermal Resistance (Junction to Case)
- 16 -
°C/ W
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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For LM7815A(VIN=23V, IO=1A, TJ=-40 to 125°C, unless otherwise specified) LM7815A Symbol Description
Min. Typ. Max. Unit Test Conditions
14.7 15 15.3 TJ=25°C VO Output Voltage
14.4 - 15.6V VIN=17.9V to 30V,
IO=5mA to 1A, PD≤15W
∆VLINE Line Regulation - 35 150 mV VIN=17.9V to 30V, IO=500mA, TJ=25°C
∆VLOAD Load Regulation - 70 150 mV VIN=23V, IO=5mA to 1A, TJ=25°C
IQ Quiescent Current - 3.4 6.0 mA VIN=23V, IO=0
- 0.3 0.8 VIN=17.9V to 30V, IO=500mA, TJ=25°C ∆IQ Quiescent Current
Change - 0.08 0.5 mA
IO=5mA to 1A, TJ=25°C
PSRR Ripple Rejection - 58 - dB VIN=18.5V to 28.5V, f=120Hz, IO=500mA
VDROP Dropout Voltage - 2.0 - V ∆VO=1%, IO=1A, TJ=25°C
eN Output Noise Voltage - 10 - µV/VO f=10Hz to 100kHz, TA=25°C
RO Output Resistance - 11 - mΩ f=1kHz
ISC Short Circuit Current - 0.2 - A VIN=35V, TA=25°C
IPK Peak Output Current - 2.2 - A VIN=21V, TJ=25°C
∆VO/∆T - 1.2 - mV/°C -
(∆VO/VO)/∆T Output Voltage Temperature Coefficient - 80 - ppm/°C -
- 9 - TO-220
- 9 - TO-220F θJC Thermal Resistance (Junction to Case)
- 16 -
°C/ W
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
www.taitroncomponents.com Page 12 of 18
For LM7818A(VIN=27V, IO=1A, TJ=-40 to 125°C, unless otherwise specified) LM7818A Symbol Description
Min. Typ. Max. Unit Test Conditions
17.64 18 18.36 TJ=25°C VO Output Voltage
17.3 - 18.7V VIN=21V to 33V,
IO=5mA to 1A, PD≤15W
∆VLINE Line Regulation - 45 180 mV VIN=21V to 33V, IO=500mA, TJ=25°C
∆VLOAD Load Regulation - 85 180 mV VIN=27V, IO=5mA to 1A, TJ=25°C
IQ Quiescent Current - 3.6 6.0 mA VIN=27V, IO=0
- 0.3 0.8 VIN=21V to 33V, IO=500mA, TJ=25°C ∆IQ Quiescent Current
Change - 0.08 0.5 mA
IO=5mA to 1A, TJ=25°C
PSRR Ripple Rejection - 57 - dB VIN=22V to 32V, f=120Hz, IO=500mA
VDROP Dropout Voltage - 2.0 - V ∆VOUT=1%, IO=1A, TJ=25°C
eN Output Noise Voltage - 10 - µV/VO f=10Hz to 100kHz, TA=25°C
RO Output Resistance - 11 - mΩ f=1kHz
ISC Short Circuit Current - 0.2 - A VIN=35V, TA=25°C
IPK Peak Output Current - 2.2 - A VIN=24V, TJ=25°C
∆VO/∆T - 1.44 - mV/°C -
(∆VO/VO)/∆T Output Voltage Temperature Coefficient - 80 - ppm/°C -
- 9 - TO-220
- 9 - TO-220F θJC Thermal Resistance (Junction to Case)
- 16 -
°C/ W
DPAK (TO-252)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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Fig.1- Peak Output Current vs. Input/Output Differential Voltage
VIN-VO (V)
Fig.2- Output Voltage vs. Junction Temperature
Junction Temperature (°C)
Fig.3- Output Voltage vs. Output Current
Output Current (mA)
Fig.4- Output Voltage vs. Input Voltage
Input Voltage (V)
Typical Characteristics Curves
Peak
Out
put C
urre
nt (A
)
Out
put V
olta
ge (V
)
Out
put V
olta
ge (V
)
Out
put V
olta
ge (V
)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
www.taitroncomponents.com Page 14 of 18
Fig.6- Ripple Rejection vs. Frequency
Frequency (Hz)
Fig.5- Quiescent Current vs. Junction Temperature
Junction Temperature (°C)
Fig.7- Dropout Voltage vs. Junction Temperature
Junction Temperature (°C)
Fig.8- Power Dissipation vs. Junction Temperature
Junction Temperature (°C)
Typical Characteristics Curves (Continued)
Rip
ple
Rej
ectio
n (d
B)
Dro
pout
Vol
tage
(V)
Pow
er D
issi
patio
n (W
)
Qui
esce
nt C
urre
nt (m
A)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
www.taitroncomponents.com Page 15 of 18
Fig.9- Line Transient (Conditions: IO=500mA, CO=0.1µF)
Time (100µs/Div)
Fig.10- Load Transient (Conditions: VIN=10V, CIN=0.33µF, CO=0.1µF)
Time (40µs/Div)
Typical Performance Characteristics
Typical Application
VIN
(5V/
Div
) ∆V
O (5
0mV/
Div
)
IO (1
A/D
iv)
∆VO
(100
mV/
Div
)
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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Dimensions in mm (inches)
TO-220
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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TO-220F
1A Standard Positive Voltage Regulator
Rev. B/LX
LM78xxA
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DPAK (TO-252)