LM7820L-TA3-T [UTC]

Fixed Positive Standard Regulator,;
LM7820L-TA3-T
型号: LM7820L-TA3-T
厂家: Unisonic Technologies    Unisonic Technologies
描述:

Fixed Positive Standard Regulator,

输出元件 调节器
文件: 总12页 (文件大小:476K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
UNISONIC TECHNOLOGIES CO., LTD  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
3-TERMINAL 1A POSITIVE  
VOLTAGE REGULATOR  
1
TO-220  
DESCRIPTION  
1
The UTC LM78XX family is monolithic fixed voltage regulator  
integrated circuit. They are suitable for applications that required  
supply current up to 1 A.  
TO-220F  
FEATURES  
1
* Output current up to 1A  
TO-262  
* Fixed output voltage of 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V,  
20V and 24V available  
* Thermal overload shutdown protection  
* Output transistor SOA protection  
1
TO-92  
ORDERING INFORMATION  
Ordering Number  
Pin Assignment  
Package  
Packing  
Lead Free  
Halogen Free  
1
I
2
3
LM78XXL-TA3-T  
LM78XXL-TF3-T  
LM78XXL-T2Q-T  
LM78XXL-T92-B  
LM78XXL-T92-K  
LM78XXG-TA3-T  
LM78XXG-TF3-T  
LM78XXG-T2Q-T  
LM78XXG-T92-B  
LM78XXG-T92-K  
TO-220  
TO-220F  
TO-262  
TO-92  
G
G
G
G
G
O
O
O
O
O
Tube  
Tube  
I
I
Tube  
I
Tape Box  
Bulk  
TO-92  
I
Note: Pin Assignment: O: Output  
G: GND  
I: Input  
(1) T: Tube, B: Tape Box, K: Bulk  
LM78XXG-TA3-T  
(1)Packing Type  
(2) TA3: TO-220, TF3: TO-220F, T2Q: TO-262  
(2) T92: TO-92  
(2)Package Type  
(3)Green Package  
(4)Output Voltage Code  
(3) G: Halogen Free and Lead Free, L: Lead Free  
(4) XX: refer to Marking Information  
www.unisonic.com.tw  
1 of 12  
Copyright © 2019 Unisonic Technologies Co., Ltd  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
MARKING INFORMATION  
PACKAGE  
VOLTAGE CODE  
MARKING  
UTC  
TO-220  
TO-220F  
TO-262  
05:5.0 V  
06: 6.0 V  
07: 7.0 V  
08: 8.0 V  
09: 9.0 V  
10: 10 V  
12: 12 V  
15: 15 V  
18: 18 V  
20: 20V  
L: Lead Free  
LM78XX  
Voltage Code  
Lot Code  
G: Halogen Free  
□□□□□□  
Date Code  
1
2
3
UTC  
LM78  
L: Lead Free  
G: Halogen Free  
Date Code  
Voltage Code  
TO-92  
24: 24 V  
1
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
2 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
TEST CIRCUIT  
INPUT  
1
Z2  
R13  
R14  
R17  
T8  
R9  
T12  
T14  
R19  
T10  
T9  
R18  
R12  
T13  
OUTPUT  
T11  
R11  
R10  
T5  
3
T6  
R8  
R15  
R5  
T4  
Z1  
T15  
R4  
R2  
R6  
C1  
R7  
T7  
R1  
R16  
T3  
T1  
T2  
GND  
2
R3  
APPLICATION CIRCUIT  
VIN  
VOUT  
1
3
UTC LM78XX  
2
CO=0.1 μF  
CI=0.33 μF  
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.  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
3 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)  
PARAMETER  
SYMBOL  
VIN  
RATING  
UNIT  
V
VOUT=5~18V  
VOUT=24V  
35  
40  
Input voltage  
V
Output Current  
IOUT  
PD  
1
A
Power Dissipation  
Internally Limited  
+150  
W
Junction Temperature  
Operating Temperature  
Storage Temperature  
TJ  
°C  
°C  
°C  
TOPR  
TSTG  
-20 ~ +125  
-55 ~ +150  
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  
65  
UNIT  
°C/W  
TO-220/TO-220F  
TO-262  
Junction to Ambient  
Junction to Case  
θJA  
TO-92  
180  
5
TO-220/TO-262  
TO-220F  
θJC  
7.8  
83  
°C/W  
TO-92  
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  
Output Voltage  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =7.5V ~ 20V,  
IOUT=5mA ~ 1.0A,PD15W  
TJ =25°C  
MIN  
4.80  
TYP MAX UNIT  
5.0  
5.20  
V
4.75  
5.25  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =7V ~ 25V, TJ =25°C  
VIN =7.5V ~ 20V, TJ =25°C, IOUT=1.0A  
TJ =25°C, IOUT1.0A  
50  
25  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
50  
Line regulation  
VOUT  
IQ  
50  
Quiescent Current  
Quiescent Current Change  
8.0  
1.0  
0.5  
VIN =7.5V ~ 20V  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hzf100kHz  
40  
80  
VIN =8V ~ 18V,f=120Hz, TJ =25°C  
TJ =25°C  
59  
Peak Output Current  
IPEAK  
1.8  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
4 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
ELECTRICAL CHARACTERISTICS (Cont.)  
For UTC LM7806 (VIN =11V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =8.5V ~ 21V,  
IOUT=5mA ~ 1.0A, PD15W  
TJ =25°C  
MIN  
5.76  
TYP MAX UNIT  
6.0  
6.24  
V
Output Voltage  
5.70  
6.30  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A~ 0.75A  
VIN =8V ~ 25V, TJ =25°C  
VIN =8.5V ~ 21V, TJ =25°C,IOUT=1.0A  
TJ =25°C, IOUT1.0A  
60  
30  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
60  
Line regulation  
VOUT  
IQ  
60  
Quiescent Current  
Quiescent Current Change  
8.0  
1.0  
0.5  
VIN =8.5V ~ 21V  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hzf100kHz  
45  
75  
VIN =9V ~ 19V,f=120Hz, TJ =25°C  
TJ =25°C  
56  
Peak Output Current  
IPEAK  
1.8  
For UTC LM7807 (VIN =13V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA - 1.0A  
VIN =9.5V ~ 22V,  
IOUT=5mA ~ 1.0A, PD15W  
TJ =25°C  
MIN  
6.72  
TYP MAX UNIT  
7.0  
7.28  
V
Output Voltage  
6.65  
7.35  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =9V ~ 25V, TJ =25°C  
VIN =9.5V ~ 22V, TJ =25°C,IOUT=1.0A  
TJ =25°C, IOUT1.0A  
70  
35  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
70  
Line regulation  
VOUT  
IQ  
70  
Quiescent Current  
Quiescent Current Change  
8.0  
1.0  
0.5  
VIN =9.5V ~ 22V  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hzf100kHz  
50  
75  
VIN =10V ~ 20V,f=120Hz, TJ =25°C  
TJ =25°C  
56  
Peak Output Current  
IPEAK  
1.7  
For UTC LM7808 (VIN =14V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA~ 1.0A  
VIN =10.5V ~ 23V,  
IOUT=5mA ~ 1.0A, PD≤15W  
TJ =25°C  
MIN  
7.68  
TYP MAX UNIT  
8.0  
8.32  
V
Output Voltage  
7.60  
8.40  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =10.5V ~ 25V, TJ =25°C  
VIN =10.5V ~ 23V, TJ =25°C,IOUT=1.0A  
TJ =25°C, IOUT≤1.0A  
VIN =10.5V ~ 23V  
80  
40  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
VOUT  
80  
Line regulation  
VOUT  
IQ  
80  
Quiescent Current  
Quiescent Current Change  
Output Noise Voltage  
Ripple Rejection  
8.0  
1.0  
0.5  
IQ  
IOUT=5mA ~ 1.0A  
eN  
10Hz≤f≤100kHz  
58  
72  
VIN =11.5V ~ 21.5V,  
f=120Hz, TJ =25°C  
RR  
53  
dB  
A
Peak Output Current  
IPEAK  
TJ =25°C  
1.8  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
5 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
ELECTRICAL CHARACTERISTICS (Cont.)  
For UTC LM7809 (VIN =15V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =11.5V ~ 24V,  
IOUT=5mA ~ 1.0A,PD15W  
TJ =25°C  
MIN  
8.64  
TYP MAX UNIT  
9.0  
9.36  
V
Output Voltage  
8.55  
9.45  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =11.5V ~ 25 V, TJ =25°C  
VIN =11.5V ~ 24V, TJ =25°C, IOUT=1.0A  
TJ =25°C, IOUT≤1.0A  
90  
45  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
90  
Line regulation  
VOUT  
IQ  
90  
Quiescent Current  
Quiescent Current Change  
8.0  
1.0  
0.5  
VIN =11.5V ~ 24V  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hz≤f≤100kHz  
58  
72  
VIN =12.5V ~ 22.5V,f=120Hz, TJ =25°C  
TJ =25°C  
53  
Peak Output Current  
IPEAK  
1.8  
For UTC LM7810 (VIN =16V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =12.5V ~ 25V,  
IOUT=5mA ~ 1.0A,PD≤15W  
TJ =25°C  
MIN TYP MAX UNIT  
9.60 10.0 10.40  
V
V
Output Voltage  
9.50  
10.50  
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA - 1.0A  
TJ =25°C,IOUT=0.25A - 0.75A  
VIN =13V ~ 25V, TJ =25°C  
VIN =13V ~ 25V, TJ =25°C,IOUT=1.0A  
TJ =25°C, IOUT≤1.0A  
100  
50  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
100  
100  
8.0  
1.0  
0.5  
Line regulation  
VOUT  
IQ  
Quiescent Current  
Quiescent Current Change  
VIN =12.6V ~ 25V  
IQ  
IOUT=5mA - 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hz≤f≤100kHz  
58  
72  
VIN =13V ~ 23V,f=120Hz, TJ =25°C  
TJ =25°C  
53  
Peak Output Current  
IPEAK  
1.8  
For UTC LM7812 (VIN =19V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =14.5V ~ 27V,  
IOUT=5mA ~ 1.0A,PD≤15W  
TJ =25°C  
MIN TYP MAX UNIT  
11.52 12.0 12.48  
V
Output Voltage  
11.40  
12.60  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =14.5V ~ 30V, TJ =25°C  
VIN =14.6V ~ 27V, TJ =25°C, IOUT=1.0A  
TJ =25°C, IOUT≤1.0A  
120  
60  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
120  
120  
8.0  
1.0  
0.5  
Line regulation  
VOUT  
IQ  
Quiescent Current  
Quiescent Current Change  
VIN =14.5V ~ 30V  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hz≤f≤100kHz  
75  
72  
VIN =15V - 25V,f=120Hz, TJ =25°C  
TJ =25°C  
52  
Peak Output Current  
IPEAK  
1.8  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
6 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
ELECTRICAL CHARACTERISTICS (Cont.)  
For UTC LM7815 (VIN =23V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =17.5V ~ 30V,  
IOUT=5mA ~ 1.0A,PD15W  
TJ =25°C  
MIN  
TYP MAX UNIT  
14.40 15.0 15.60  
V
Output Voltage  
14.25  
15.75  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =18.5V ~ 30V, TJ =25°C  
VIN =17.7V ~ 30V, TJ =25°C, IOUT =1.0A  
TJ =25°C, IOUT1.0A  
150  
75  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
150  
150  
8.0  
1.0  
0.5  
Line regulation  
VOUT  
IQ  
Quiescent Current  
Quiescent Current Change  
VIN =17.5V ~ 30V  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hzf100kHz  
90  
70  
VIN =18.5V ~ 28.5V,f=120Hz, TJ =25°C  
TJ =25°C  
51  
Peak Output Current  
IPEAK  
1.8  
For UTC LM7818 (VIN =27V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =21V ~ 33V,  
IOUT=5mA ~ 1.0A, PD≤15W  
TJ =25°C  
MIN  
TYP MAX UNIT  
17.28 18.0 18.72  
V
Output Voltage  
17.10  
18.90  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =21V ~ 33V, TJ =25°C  
VIN =21V ~ 33V,  
TJ =25°C, IOUT =1.0A  
TJ =25°C, IOUT≤1.0A  
VIN =21.5V ~ 33V  
180  
90  
mV  
mV  
mV  
VOUT  
180  
Line regulation  
VOUT  
180  
mV  
Quiescent Current  
IQ  
8.0  
1.0  
0.5  
mA  
mA  
mA  
μV  
dB  
A
Quiescent Current Change  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hz≤f≤100kHz  
110  
69  
VIN =22V ~ 32V,f=120Hz, TJ =25°C  
TJ =25°C  
50  
Peak Output Current  
IPEAK  
1.8  
For UTC LM7820 (VIN =31V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =23V ~ 35V,  
IOUT=5mA ~ 1.0A, PD≤15W  
TJ =25°C  
MIN  
TYP MAX UNIT  
19.20 20.0 20.80  
V
Output Voltage  
19.00  
21.00  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25°C,IOUT=0.25A ~ 0.75A  
VIN =23V ~ 35V, TJ =25°C  
VIN =23V ~ 35V,  
TJ =25°C, IOUT =1.0A  
TJ =25°C, IOUT≤1.0A  
VIN =23.5V ~ 35V  
200  
100  
200  
mV  
mV  
mV  
VOUT  
Line regulation  
VOUT  
200  
mV  
Quiescent Current  
IQ  
8.0  
1.0  
0.5  
mA  
mA  
mA  
μV  
dB  
A
Quiescent Current Change  
IQ  
IOUT=5mA ~ 1.0A  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hz≤f≤100kHz  
110  
69  
VIN =24V ~ 34V,f=120Hz, TJ =25°C  
TJ =25°C  
50  
Peak Output Current  
IPEAK  
1.8  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
7 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
ELECTRICAL CHARACTERISTICS (Cont.)  
For UTC LM7824 (VIN =33V)  
PARAMETER  
SYMBOL  
VOUT  
TEST CONDITIONS  
TJ =25°C, IOUT=5mA ~ 1.0A  
VIN =27V ~ 38V,  
IOUT=5mA ~ 1.0A, ,PD15W  
TJ =25°C  
MIN  
TYP MAX UNIT  
23.04 24.0 24.96  
V
Output Voltage  
22.80  
25.20  
V
Dropout Voltage  
Load Regulation  
VD  
2.0  
V
TJ =25°C,IOUT=5mA ~ 1.0A  
TJ =25C,IOUT=0.25A ~ 0.75A  
VIN =27V ~ 38V, TJ =25°C  
VIN =27V ~ 38V, TJ =25°C,I OUT=1.0A  
TJ =25°C, IOUT1.0A  
240  
120  
240  
240  
8.0  
mV  
mV  
mV  
mV  
mA  
mA  
mA  
μV  
dB  
A
VOUT  
Line regulation  
VOUT  
IQ  
Quiescent Current  
Quiescent Current Change  
VIN =28V ~ 38V  
1.0  
IQ  
IOUT=5mA ~ 1.0A  
0.5  
Output Noise Voltage  
Ripple Rejection  
eN  
RR  
10Hzf100kHz  
170  
66  
VIN =28V ~ 38V, f=120Hz, TJ =25°C  
TJ =25°C  
49  
Peak Output Current  
IPEAK  
1.8  
Notes: 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  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
8 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
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.  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
9 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
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.  
Bypass Diode  
Diode for preventing back current flow  
VCC  
Output pin  
Bypass Diode  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
10 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
TYPICAL CHARACTERISTICS  
Ambient Temperature vs. Power Dissipation  
Output Voltage vs. Ambient Temperature  
16  
θJC=5°С/W  
θJA=65°С/W  
TJ(max)=125°С  
5.2  
14  
12  
8
θHS=5°С/W  
5.1  
5.0  
θHS=15°С/W  
4.9  
4.8  
4
0
No Heatsink  
125 150  
25 50 75 105  
-50  
0
50  
100  
-50 -25  
0
Ambient Temperature, TA С)  
Ambient Temperature, TA С)  
Output Voltage vs. Input Voltage  
Output Voltage Change vs. Junction Temperature  
200  
10  
IO=5mA  
TJ=25  
9
8
7
150  
100  
50  
6
5
4
0
IO=0A  
-50  
IO=0.5A  
3
-100  
-150  
2
1
0
IO=1A  
-200  
-50 -25  
0
25 50 75 100 125 150  
0
2
4
6
8
10  
12  
Junction Temperature, TJ ()  
Input Voltage, VIN (V)  
Dropout Voltage vs. Juntion Temperature  
IO=1A  
GND Current vs. Input Voltage  
10  
2.5  
2.3  
TJ=25  
9
8
7
6
5
2.1  
1.9  
IO=0A  
4
3
IO=0.5A  
1.7  
1.5  
2
1
IO=1A  
0
-40 -20 0 20 40 60 80 100120 140  
2
4
6
8 10 12 14 16 18 20  
0
Juntion Temperature, TJ ()  
Input Voltage, VIN (V)  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
11 of 12  
QW-R101-006.Y  
LM78XX  
LINEAR INTEGRATED CIRCUIT  
TYPICAL CHARACTERISTICS(Cont.)  
Output Peak Current vs. Dropout Voltage  
Ripple Rejection vs. Frequency  
3
2
80  
70  
IO=0.5A, TJ=25  
60  
50  
40  
1
0
30  
20  
0
5
10  
15  
20  
10  
100  
1K  
10K  
100K  
Frequency, f (Hz)  
Dropout Voltage, V-dif (V)  
Dropout Voltage vs. Output Current  
Output Voltage vs. Output Current  
VIN=10V  
2.5  
2
10  
TJ=25  
9
8
7
6
5
1.5  
4
3
1
0.5  
0
2
1
0
0
0.25  
0.5  
0.75  
1
0
0.4  
0.8 1.2 1.6  
2
2.4  
Output Current, IO (A)  
Output Current, IO (A)  
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. UTC reserves the right to  
make changes to information published in this document, including without limitation specifications and  
product descriptions, at any time and without notice. This document supersedes and replaces all  
information supplied prior to the publication hereof.  
UNISONICTECHNOLOGIESCO.,LTD  
www.unisonic.com.tw  
12 of 12  
QW-R101-006.Y  

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