UNISONIC TECHNOLOGIES CO., LTD
LM78XX LINEAR INTEGRATED CIRCUIT
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Copyright © 2013 Unisonic Technologies Co., Ltd QW-R101-006.Q
3-TERMINAL 1A POSITIVE
VOLTAGE REGULATOR
DESCRIPTION
The UTC LM78XX family is monolithic fixed voltage regulator
integrated circuit. They are suitable for applications that required
supply current up to 1 A.
FEATURES
* Output current up to 1A
* Fixed output voltage of 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V and 18V
available
* Thermal overload shutdown protection
* Short circuit current limiting
* Output transistor SOA protection
ORDERING INFORMATION
Ordering Number Package Pin Assignment Packing
Lead Free Halogen Free 1 2 3
LM78XXL-TA3-T LM78XXG-TA3-T
TO-220 I G O Tube
LM78XXL-TF3-T LM78XXG-TF3-T TO-220F
I G O Tube
LM78XXL-T2Q-T LM78XXG-T2Q-T TO-262
I G O Tube
Note: Pin Assignment: O: Output G: GND I: Input
LM78XX LINEAR INTEGRATED CIRCUIT
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MARKING INFORMATION
PACKAGE VOLTAGE CODE MARKING
TO-220
TO-220F
TO-262
05:
06:
07:
08:
09:
10:
12:
15:
18:
5.0 V
6.0 V
7.0 V
8.0 V
9.0 V
1.0 V
1.2 V
1.5 V
1.8 V
LM78XX LINEAR INTEGRATED CIRCUIT
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TEST CIRCUIT
APPLICATION CIRCUIT
UTC LM78XX 3
2
1
CO=0.1 μF
CI=0.33 μF
VIN VOUT
Note 1: To specify an output voltage, substitute voltage value for "XX".
2: Bypass capacitors are recommended for optimum stability and transient response and should be located as
close as possible to the regulators.
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ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)
PARAMETER SYMBOL RATING UNIT
Input voltage VIN 35 V
Output Current IOUT 1 A
Power Dissipation PD Internally Limited W
Operating Junction Temperature TOPR -20 ~ +150 °C
Storage Temperature TSTG -55 ~ +150 °C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER SYMBOL RATING UNIT
Junction to Ambient θJA 65 °C/W
Junction to Case θJC 5 °C/W
ELECTRICAL CHARACTERISTICS
(IOUT=0.5A, TJ= 0°C~125°C, CI =0.33μF, CO=0.1μF, unless otherwise specified)(Note 1)
For UTC LM7805 (VIN =10V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA ~ 1.0A 4.80 5.0 5.20 V
VIN =7.5V ~ 20V,
IOUT=5mA ~ 1.0A,PD≤15W 4.75 5.25 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 50 mV
TJ =25°C,IOUT=0.25A ~ 0.75A 25 mV
Line regulation ΔVOUT VIN =7V ~ 25V, TJ =25°C 50 mV
VIN =7.5V ~ 20V, TJ =25°C, IOUT=1.0A 50 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =7.5V ~ 20V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 40 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -0.6 mV/°C
Ripple Rejection RR VIN =8V ~ 18V,f=120Hz, TJ =25°C 62 80 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
LM78XX LINEAR INTEGRATED CIRCUIT
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ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LM7806 (VIN =11V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA ~ 1.0A 5.76 6.0 6.24 V
VIN =8.5V ~ 21V,
IOUT=5mA ~ 1.0A, PD≤15W 5.70 6.30 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 60 mV
TJ =25°C,IOUT=0.25A~ 0.75A 30 mV
Line regulation ΔVOUT VIN =8V ~ 25V, TJ =25°C 60 mV
VIN =8.5V ~ 21V, TJ =25°C,IOUT=1.0A 60 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =8.5V ~ 21V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 45 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -0.7 mV/°C
Ripple Rejection RR VIN =9V ~ 19V,f=120Hz, TJ =25°C 59 75 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
For UTC LM7807 (VIN =13V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA - 1.0A 6.72 7.0 7.28 V
VIN =9.5V ~ 22V,
IOUT=5mA ~ 1.0A, PD≤15W 6.65 7.35 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 70 mV
TJ =25°C,IOUT=0.25A ~ 0.75A 35 mV
Line regulation ΔVOUT VIN =9V ~ 25V, TJ =25°C 70 mV
VIN =9.5V ~ 22V, TJ =25°C,IOUT=1.0A 70 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =9.5V ~ 22V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 50 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -0.8 mV/°C
Ripple Rejection RR VIN =10V ~ 20V,f=120Hz, TJ =25°C 59 75 dB
Peak Output Current IPEAK T
J =25°C 1.7 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
LM78XX LINEAR INTEGRATED CIRCUIT
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ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LM7808 (VIN =14V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA~ 1.0A 7.68 8.0 8.32 V
VIN =10.5V ~ 23V,
IOUT=5mA ~ 1.0A, PD≤15W 7.60 8.40 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 80 mV
TJ =25°C,IOUT=0.25A ~ 0.75A 40 mV
Line regulation ΔVOUT VIN =10.5V ~ 25V, TJ =25°C 80 mV
VIN =10.5V ~ 23V, TJ =25°C,IOUT=1.0A 80 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =10.5V ~ 23V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 58 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -0.9 mV/°C
Ripple Rejection RR VIN =11.5V ~ 21.5V,
f=120Hz, TJ =25°C 56 72 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
For UTC LM7809 (VIN =15V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA ~ 1.0A 8.64 9.0 9.36 V
VIN =11.5V ~ 24V,
IOUT=5mA ~ 1.0A,PD≤15W 8.55 9.45 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 90 mV
TJ =25°C,IOUT=0.25A ~ 0.75A 45 mV
Line regulation ΔVOUT VIN =11.5V ~ 25 V, TJ =25°C 90 mV
VIN =11.5V ~ 24V, TJ =25°C, IOUT=1.0A 90 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =11.5V ~ 24V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 58 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -1.1 mV/°C
Ripple Rejection RR VIN =12.5V ~ 22.5V,f=120Hz, TJ =25°C 56 72 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
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ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LM7810 (VIN =16V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA ~ 1.0A 9.60 10.0 10.40 V
VIN =12.5V ~ 25V,
IOUT=5mA ~ 1.0A,PD≤15W 9.50 10.50 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA - 1.0A 100 mV
TJ =25°C,IOUT=0.25A - 0.75A 50 mV
Line regulation ΔVOUT VIN =13V ~ 25V, TJ =25°C 100 mV
VIN =13V ~ 25V, TJ =25°C,IOUT=1.0A 100 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =12.6V ~ 25V 1.0 mA
IOUT=5mA - 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 58 μV
Temperature coefficient of Vo ΔVo/ΔT IOUT=5mA -1.1 mV/°C
Ripple Rejection RR VIN =13V ~ 23V,f=120Hz, TJ =25°C 56 72 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
For UTC LM7812 (VIN =19V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA ~ 1.0A 11.52 12.0 12.48 V
VIN =14.5V ~ 27V,
IOUT=5mA ~ 1.0A,PD≤15W 11.40 12.60 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 120 mV
TJ =25°C,IOUT=0.25A ~ 0.75A 60 mV
Line regulation ΔVOUT VIN =14.5V ~ 30V, TJ =25°C 120 mV
VIN =14.6V ~ 27V, TJ =25°C, IOUT=1.0A 120 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =14.5V ~ 30V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 75 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -1.5 mV/°C
Ripple Rejection RR VIN =15V - 25V,f=120Hz, TJ =25°C 55 72 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
LM78XX LINEAR INTEGRATED CIRCUIT
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ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LM7815 (VIN =23V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA ~ 1.0A 14.40 15.0 15.60 V
VIN =17.5V ~ 30V,
IOUT=5mA ~ 1.0A,PD≤15W 14.25 15.75 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 150 mV
TJ =25°C,IOUT=0.25A ~ 0.75A 75 mV
Line regulation ΔVOUT VIN =18.5V ~ 30V, TJ =25°C 150 mV
VIN =17.7V ~ 30V, TJ =25°C, IOUT =1.0A 150 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =17.5V ~ 30V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 90 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -1.8 mV/°C
Ripple Rejection RR VIN =18.5V ~ 28.5V,f=120Hz, TJ =25°C 54 70 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
For UTC LM7818 (VIN =27V)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT
TJ =25°C, IOUT=5mA ~ 1.0A 17.28 18.0 18.72 V
VIN =21V ~ 33V,
IOUT=5mA ~ 1.0A, PD≤15W 17.10 18.90 V
Dropout Voltage VD T
J =25°C 2.0 V
Load Regulation ΔVOUT TJ =25°C,IOUT=5mA ~ 1.0A 180 mV
TJ =25°C,IOUT=0.25A ~ 0.75A 90 mV
Line regulation ΔVOUT
VIN =21V ~ 33V, TJ =25°C 180 mV
VIN =21V ~ 33V,
TJ =25°C, IOUT =1.0A
180 mV
Quiescent Current IQ T
J =25°C, IOUT≤1.0A 8.0 mA
Quiescent Current Change ΔIQ VIN =21.5V ~ 33V 1.0 mA
IOUT=5mA ~ 1.0A 0.5 mA
Output Noise Voltage eN 10Hz≤f≤100kHz 110 μV
Temperature Coefficient of Vo ΔVo/ΔT IOUT=5mA -2.2 mV/°C
Ripple Rejection RR VIN =22V ~ 32V,f=120Hz, TJ =25°C 53 69 dB
Peak Output Current IPEAK T
J =25°C 1.8 A
Short-Circuit Current ISC V
IN =35V, TJ =25°C 250 mA
Note 1: The Maximum steady state usable output current are dependent on input voltage, heat sinking, lead length
of the package and copper pattern of PCB. The data above represents pulse test conditions with junction
temperatures specified at the initiation of test.
2: Power dissipation<0.5W
LM78XX LINEAR INTEGRATED CIRCUIT
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NOTES FOR USE
1. Thermal design
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual
operating conditions.
2. Absolute maximum ratings
An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating
conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a short
circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum ratings, consider
adding circuit protection devices, such as fuses.
3. GND voltage
The potential of GND pin must be minimum potential in all operating conditions.
4. Actions in strong electromagnetic field
Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the
IC to malfunction.
5. Inter-pin shorts and mounting errors
Use caution when positioning the IC for mounting on printed circuit boards.
The IC may be damaged if there is any connection error or if pins are shorted together.
6. Thermal shutdown circuit
The IC incorporates a built-in thermal shutdown circuit (TSD circuit). The thermal shutdown circuit (TSD
circuit) is designed only to shut the IC off to prevent thermal runaway. It is not designed to protect the IC or
guarantee its operation. Do not continue to use the IC after operating this circuit or use the IC in an environment
where the operation of this circuit is assumed.
7. Overcurrent Protection Circuit
An overcurrent protection circuit is incorporated in order to prevention destruction due to short-time overload
currents.
Continued use of the protection circuits should be avoided. Please note that the current increases negatively
impact the temperature.
8. Testing on application boards
When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the
IC to stress. Always discharge capacitors after each process or step. Always turn the IC's power supply off before
connecting it to or removing it from a jig or fixture during the inspection process. Ground the IC during assembly
steps as an antistatic measure. Use similar precaution when transporting or storing the IC.
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NOTES FOR USE(Cont.)
9. Ground Wiring Pattern
When using both small signal and large current GND patterns, it is recommended to isolate the two ground
patterns, placing a single ground point at the ground potential of application so that the pattern wiring resistance
and voltage variations caused by large currents do not cause variations in the small signal ground voltage. Be
careful not to change the GND wiring pattern of any external components, either.
10. Damage to the internal circuit or element may occur when the polarity of the Vcc pin is opposite to that of the
other pins in applications. (I.e. Vcc is shorted with the GND pin while an external capacitor is charged.) Use a
maximum capacitance of 1000μF for the output pins. Inserting a diode to prevent back-current flow in series with Vcc
or bypass diodes between Vcc and each pin is recommended.
VCC
Output pin
Bypass Diode
Diode for preventing back current flow
Bypass Diode
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TYPICAL CHARACTERISTICS
Power Dissipation, PD(W)
Output Voltage, VO(V)
-25-50
Output Voltage Change vs. Junction Temperature
Junction Temperature, TJ(℃)
50 75 150
0100
Output Voltage vs. Input Voltage
Input Voltage, VIN (V)
0
2
3
7
10
04 81012
-200
-100
0
50
100
200
25 125
-150
-50
150
62
1
4
5
6
8
9
IO=0A
IO=1A
IO=0.5A
IO=5mA TJ=25℃
GND-Pin Current, IQ(mA)
Dropout Voltage, VD (V)
LM78XX LINEAR INTEGRATED CIRCUIT
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TYPICAL CHARACTERISTICS(Cont.)
Output Peak Current, IO peak (A)
Ripple Rejection, RR (dB)
Dropout Voltage, VD(V)
Output Voltage, VD(V)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
