µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056H – MAY 1976 – REVISED NOVEMBER 2002
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
3-Terminal Regulators
D
Output Current up to 1.5 A
D
Internal Thermal-Overload Protection
D
High Power-Dissipation Capability
D
Internal Short-Circuit Current Limiting
D
Output Transistor Safe-Area Compensation
KTE PACKAGE
(TOP VIEW)
OUTPUT
COMMON
INPUT
COMMON
OUTPUT
KC (TO-220) PACKAGE
(TOP VIEW)
INPUT
COMMON
COMMON
OUTPUT
KCS (TO-220) PACKAGE
(TOP VIEW)
INPUT
COMMON
COMMON
description/ordering information
This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications.
These applications include on-card regulation for elimination of noise and distribution problems associated with
single-point regulation. Each of these regulators can deliver up to 1.5 A of output current. The internal
current-limiting and thermal-shutdown features of these regulators essentially make them immune to overload.
In addition to use as fixed-voltage regulators, these devices can be used with external components to obtain
adjustable output voltages and currents, and also can be used as the power-pass element in precision
regulators.
ORDERING INFORMATION
TJVO(NOM)
(V) PACKAGE†ORDERABLE
PART NUMBER TOP-SIDE
MARKING
POWER-FLEX (KTE) Reel of 2000 µA7805CKTER µA7805C
5TO-220 (KC) T ube of 50 µA7805CKC
µA7805C
TO-220 (KCS, short shoulder) T ube of 20 µA7805CKCS µ
A7805C
POWER-FLEX (KTE) Reel of 2000 µA7808CKTER µA7808C
8TO-220 (KC) T ube of 50 µA7808CKC
µA7808C
TO-220 (KCS, short shoulder) T ube of 20 µA7808CKCS µ
A7808C
10
POWER-FLEX (KTE) Reel of 2000 µA7810CKTER µA7810C
0°Cto125°C
10
TO-220 (KC) T ube of 50 µA7810CKC µA7810C
0°C
to
125°C
POWER-FLEX (KTE) Reel of 2000 µA7812CKTER µA7812C
12 TO-220 (KC) T ube of 50 µA7812CKC
µA7812C
TO-220 (KCS, short shoulder) T ube of 20 µA7812CKCS µ
A7812C
POWER-FLEX (KTE) Reel of 2000 µA7815CKTER µA7815C
15 TO-220 (KC) T ube of 50 µA7815CKC
µA7815C
TO-220 (KCS, short shoulder) T ube of 20 µA7815CKCS µ
A7815C
24
POWER-FLEX (KTE) Reel of 2000 µA7824CKTER µA7824C
24
TO-220 (KC) T ube of 50 µA7824CKC µA7824C
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2002, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056H – MAY 1976 – REVISED NOVEMBER 2002
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
schematic
INPUT
OUTPUT
COMMON
absolute maximum ratings over virtual junction temperature range (unless otherwise noted)†
Input voltage, VI:µA7824C 40 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
All others 35 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θJA (see Notes 1 and 2): KC package 25°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . .
KCS package 25°C/W. . . . . . . . . . . . . . . . . . . . . . . . .
KTE package 23°C/W. . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Virtual junction temperature range, TJ0°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only , and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect device reliability.
NOTES: 1. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) – TA)/θJA. Selecting the maximum of 150°C can impact reliability.
2. The package thermal impedance is calculated in accordance with JESD 51-5.
recommended operating conditions
MIN MAX UNIT
µA7805C 7 25
µA7808C 10.5 25
VI
In
p
ut voltage
µA7810C 12.5 28
V
V
I
Input
voltage
µA7812C 14.5 30
V
µA7815C 17.5 30
µA7824C 27 38
IOOutput current 1.5 A
TJOperating virtual junction temperature µA7800C series 0 125 °C
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056H – MAY 1976 – REVISED NOVEMBER 2002
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 10 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
µA7805C
UNIT
PARAMETER
TEST
CONDITIONS
J
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
I
= 7 V to 20 V, 25°C 4.8 5 5.2
V
Output
voltage
O,
PD ≤ 15 W
I,
0°C to 125°C 4.75 5.25
V
In
p
ut voltage regulation
VI = 7 V to 25 V
°
3 100
mV
Input
voltage
regulation
VI = 8 V to 12 V
1 50
mV
Ripple rejection VI = 8 V to 18 V, f = 120 Hz 0°C to 125°C 62 78 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
15 100
mV
Output
voltage
regulation
IO = 250 mA to 750 mA
5 50
mV
Output resistance f = 1 kHz 0°C to 125°C 0.017 Ω
Temperature coef ficient of output voltage IO = 5 mA 0°C to 125°C–1.1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 25°C 40 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.2 8 mA
Bias current change
VI = 7 V to 25 V
1.3
mA
Bias
current
change
IO = 5 mA to 1 A
o
0.5
mA
Short-circuit output current 25°C 750 mA
Peak output current 25°C 2.2 A
†Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output.
electrical characteristics at specified virtual junction temperature, VI = 14 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
µA7808C
UNIT
PARAMETER
TEST
CONDITIONS
J
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
I
= 10.5 V to 23 V, 25°C 7.7 8 8.3
V
Output
voltage
O,
PD ≤ 15 W
I,
0°C to 125°C 7.6 8.4
V
In
p
ut voltage regulation
VI = 10.5 V to 25 V
6 160
mV
Input
voltage
regulation
VI = 11 V to 17 V
2 80
mV
Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 0°C to 125°C 55 72 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
12 160
mV
Output
voltage
regulation
IO = 250 mA to 750 mA
4 80
mV
Output resistance f = 1 kHz 0°C to 125°C 0.016 Ω
Temperature coef ficient of output voltage IO = 5 mA 0°C to 125°C–0.8 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 25°C 52 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.3 8 mA
Bias current change
VI = 10.5 V to 25 V
1
mA
Bias
current
change
IO = 5 mA to 1 A
0.5
mA
Short-circuit output current 25°C 450 mA
Peak output current 25°C 2.2 A
†Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output.
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056H – MAY 1976 – REVISED NOVEMBER 2002
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 17 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
µA7810C
UNIT
PARAMETER
TEST
CONDITIONS
J
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
I
= 12.5 V to 25 V, 25°C 9.6 10 10.4
V
Output
voltage
O,
PD ≤ 15 W
I,
0°C to 125°C 9.5 10 10.5
V
In
p
ut voltage regulation
VI = 12.5 V to 28 V
°
7 200
mV
Input
voltage
regulation
VI = 14 V to 20 V
2 100
mV
Ripple rejection VI = 13 V to 23 V, f = 120 Hz 0°C to 125°C 55 71 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
12 200
mV
Output
voltage
regulation
IO = 250 mA to 750 mA
4 100
mV
Output resistance f = 1 kHz 0°C to 125°C 0.018 Ω
Temperature coef ficient of output voltage IO = 5 mA 0°C to 125°C–1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 25°C 70 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.3 8 mA
Bias current change
VI = 12.5 V to 28 V
1
mA
Bias
current
change
IO = 5 mA to 1 A
0.5
mA
Short-circuit output current 25°C 400 mA
Peak output current 25°C 2.2 A
†Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output.
electrical characteristics at specified virtual junction temperature, VI = 19 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
µA7812C
UNIT
PARAMETER
TEST
CONDITIONS
J
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
I
= 14.5 V to 27 V, 25°C 11.5 12 12.5
V
Output
voltage
O,
PD ≤ 15 W
I,
0°C to 125°C 11.4 12.6
V
In
p
ut voltage regulation
VI = 14.5 V to 30 V
10 240
mV
Input
voltage
regulation
VI = 16 V to 22 V
3 120
mV
Ripple rejection VI = 15 V to 25 V, f = 120 Hz 0°C to 125°C 55 71 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
12 240
mV
Output
voltage
regulation
IO = 250 mA to 750 mA
4 120
mV
Output resistance f = 1 kHz 0°C to 125°C 0.018 Ω
Temperature coef ficient of output voltage IO = 5 mA 0°C to 125°C–1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 25°C 75 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.3 8 mA
Bias current change
VI = 14.5 V to 30 V
1
mA
Bias
current
change
IO = 5 mA to 1 A
o
0.5
mA
Short-circuit output current 25°C 350 mA
Peak output current 25°C 2.2 A
†Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output.
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056H – MAY 1976 – REVISED NOVEMBER 2002
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 23 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
µA7815C
UNIT
PARAMETER
TEST
CONDITIONS
J
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
I
= 17.5 V to 30 V, 25°C 14.4 15 15.6
V
Output
voltage
O,
PD ≤ 15 W
I,
0°C to 125°C 14.25 15.75
V
In
p
ut voltage regulation
VI = 17.5 V to 30 V
°
11 300
mV
Input
voltage
regulation
VI = 20 V to 26 V
3 150
mV
Ripple rejection VI = 18.5 V to 28.5 V, f = 120 Hz 0°C to 125°C 54 70 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
12 300
mV
Output
voltage
regulation
IO = 250 mA to 750 mA
4 150
mV
Output resistance f = 1 kHz 0°C to 125°C 0.019 Ω
Temperature coef ficient of output voltage IO = 5 mA 0°C to 125°C–1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 25°C 90 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.4 8 mA
Bias current change
VI = 17.5 V to 30 V
1
mA
Bias
current
change
IO = 5 mA to 1 A
0.5
mA
Short-circuit output current 25°C 230 mA
Peak output current 25°C 2.1 A
†Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output.
electrical characteristics at specified virtual junction temperature, VI = 33 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
µA7824C
UNIT
PARAMETER
TEST
CONDITIONS
J
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
I
= 27 V to 38 V, 25°C 23 24 25
V
Output
voltage
O,
PD ≤ 15 W
I,
0°C to 125°C 22.8 25.2
V
In
p
ut voltage regulation
VI = 27 V to 38 V
18 480
mV
Input
voltage
regulation
VI = 30 V to 36 V
6 240
mV
Ripple rejection VI = 28 V to 38 V, f = 120 Hz 0°C to 125°C 50 66 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
12 480
mV
Output
voltage
regulation
IO = 250 mA to 750 mA
4 240
mV
Output resistance f = 1 kHz 0°C to 125°C 0.028 Ω
Temperature coef ficient of output voltage IO = 5 mA 0°C to 125°C–1.5 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 25°C 170 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.6 8 mA
Bias current change
VI = 27 V to 38 V
1
mA
Bias
current
change
IO = 5 mA to 1 A
0.5
mA
Short-circuit output current 25°C 150 mA
Peak output current 25°C 2.1 A
†Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output.
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056H – MAY 1976 – REVISED NOVEMBER 2002
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
+VO
+V
0.1 µF0.33 µF
µA78xx
Figure 1. Fixed-Output Regulator
OUTIN G
–VO
COM
+
–
VIIL
µA78xx
Figure 2. Positive Regulator in Negative Configuration (VI Must Float)
R1
0.33 µF
Input Output
µA78xx
0.1 µF
IO
R2
VO
+
Vxx
)ǒ
Vxx
R1
)
IQ
Ǔ
R2
NOTE A: The following formula is used when Vxx is the nominal output voltage (output to common) of the fixed regulator:
Figure 3. Adjustable-Output Regulator
VO(Reg) R1
Input
IO
IO = (VO/R1) + IO Bias Current
0.33 µF
µA78xx
Output
Figure 4. Current Regulator
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056H – MAY 1976 – REVISED NOVEMBER 2002
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
µA7815C
0.1 µF1N4001
0.1 µF1N4001
0.33 µF
2 µF
1N4001
1N4001
VO = 15 V
VO = –15 V
20-V Input
–20-V Input µA7915C
1 µF
Figure 5. Regulated Dual Supply
operation with a load common to a voltage of opposite polarity
In many cases, a regulator powers a load that is not connected to ground but, instead, is connected to a voltage
source of opposite polarity (e.g., operational amplifiers, level-shifting circuits, etc.). In these cases, a clamp
diode should be connected to the regulator output as shown in Figure 6. This protects the regulator from output
polarity reversals during startup and short-circuit operation.
µA78xx +VO
+VI
–VO
1N4001
or
Equivalent
Figure 6. Output Polarity-Reversal-Protection Circuit
reverse-bias protection
Occasionally, the input voltage to the regulator can collapse faster than the output voltage. This can occur, for
example, when the input supply is crowbarred during an output overvoltage condition. If the output voltage is
greater than approximately 7 V , the emitter-base junction of the series-pass element (internal or external) could
break down and be damaged. To prevent this, a diode shunt can be used as shown in Figure 7.
µA78xx +VO
VI
Figure 7. Reverse-Bias-Protection Circuit
MECHANICAL DATA
MPFM001E – OCTOBER 1994 – REVISED JANUARY 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
KTE (R-PSFM-G3) PowerFLEX PLASTIC FLANGE-MOUNT
0.360 (9,14)
0.350 (8,89)
0.080 (2,03)
0.070 (1,78)
0.010 (0,25) NOM
0.040 (1,02)
Seating Plane
0.050 (1,27)
0.001 (0,03)
0.005 (0,13)
0.010 (0,25)
NOM
Gage Plane
0.010 (0,25)
0.031 (0,79)
0.041 (1,04)
4073375/F 12/00
NOM
3
1
0.350 (8,89)
0.220 (5,59)
0.360 (9,14)
0.295 (7,49)
NOM 0.320 (8,13)
0.310 (7,87)
0.025 (0,63)
0.031 (0,79)
Thermal Tab
(See Note C)
0.004 (0,10)
M
0.010 (0,25)
0.100 (2,54)
3°–6°
0.410 (10,41)
0.420 (10,67)
0.200 (5,08)
0.365 (9,27)
0.375 (9,52)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. The center lead is in electrical contact with the thermal tab.
D. Dimensions do not include mold protrusions, not to exceed 0.006 (0,15).
E. Falls within JEDEC MO-169
PowerFLEX is a trademark of Texas Instruments.
MECHANICAL DATA
MSOT007A – JANUARY 1995 – REVISED SEPTEMBER 1995
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
KC (R-PSFM-T3) PLASTIC FLANGE-MOUNT PACKAGE
4040207/B 01/95
(see Note F)
0.185 (4,70)
0.270 (6,86)
0.230 (5,84)
0.175 (4,46)
(see Note H)
0.052 (1,32)
0.048 (1,22)
0.122 (3,10)
0.102 (2,59)
0.025 (0,64)
0.012 (0,30)
0.420 (10,67)
MAX
0.250 (6,35)
0.380 (9,65)
(see Note H)
0.146 (3,71)
0.156 (3,96) DIA
0.125 (3,18)
(see Note C)
3
0.070 (1,78)
0.045 (1,14)
1
0.035 (0,89)
0.029 (0,74)
0.625 (15,88)
0.562 (14,27)
0.500 (12,70)
0.560 (14,22)
0.120 (3,05)
0.100 (2,54)
0.100 (2,54)
M
0.010 (0,25)
0.200 (5,08)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Lead dimensions are not controlled within this area.
D. All lead dimensions apply before solder dip.
E. The center lead is in electrical contact with the mounting tab.
F. The chamfer is optional.
G. Falls within JEDEC TO-220AB
H. Tab contour optional within these dimensions
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Copyright 2003, Texas Instruments Incorporated