µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056E – MAY 1976 – REVISED JUL Y 1999
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
D
Direct Replacements for Fairchild µA7800
Series
description
This series of fixed-voltage monolithic
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.
The µA7800C series is characterized for
operation over the virtual junction temperature
range of 0°C to 125°C.
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 1999, 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.
KC PACKAGE
(TOP VIEW)
The COMMON terminal is in electrical
contact with the mounting base.
TO-220AB
OUTPUT
COMMON
INPUT
KTE PACKAGE
(TOP VIEW)
The COMMON terminal is in
electrical contact with the mounting
base.
OCI
OUTPUT
COMMON
INPUT
OCI
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056E – MAY 1976 – REVISED JUL Y 1999
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
TJVO(NOM)
(V) PLASTIC
FLANGE-MOUNT
(KC)
HEAT-SINK
MOUNTED
(KTE)
CHIP
FORM
(Y)
5µA7805CKC µA7805CKTE µA7805Y
6µA7806CKC µA7806CKTE µA7806Y
8µA7808CKC µA7808CKTE µA7808Y
8.5 µA7885CKC µA7885CKTE µA7885Y
0°C to 125°C10 µA7810CKC µA7810CKTE µA7810Y
12 µA7812CKC µA7812CKTE µA7812Y
15 µA7815CKC µA7815CKTE µA7815Y
18 µA7818CKC µA7818CKTE µA7818Y
24 µA7824CKC µA7824CKTE µA7824Y
The KTE package is only available taped and reeled. Add the suffix R to the device type
(e.g., µA7805CKTER). Chip forms are tested at 25°C.
schematic
INPUT
OUTPUT
COMMON
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056E – MAY 1976 – REVISED JUL Y 1999
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating temperature ranges (unless otherwise noted)†
µA78xx UNIT
In
p
ut voltage VI
µA7824C 40
V
Inp
u
t
v
oltage
,
V
IAll others 35
V
Virtual junction temperature range, TJ0 to 150 °C
Package thermal im
p
edance θJA (see Notes 1 and 2)
KC package 22 °
C
Package
thermal
impedance
,
θ
JA
(see
Notes
1
and
2)
KTE package 23
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C
Storage temperature range, Tstg –65 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. Operating at the absolute maximum TJ of 150°C can impact reliability. Due to
variations in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be
activated at power levels slightly above or below the rated dissipation.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
MIN MAX UNIT
µA7805C 7 25
µA7806C 8 25
µA7808C 10.5 25
µA7885C 10.5 25
Input voltage, VIµA7810C 12.5 28 V
µA7812C 14.5 30
µA7815C 17.5 30
µA7818C 21 33
µA7824C 27 38
Output current, IO1.5 A
Operating virtual junction temperature, TJµA7800C series 0 125 °C
µA7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056E – MAY 1976 – REVISED JUL Y 1999
4POST 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
T†
µA7805C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 7 V to 20 V, 25°C 4.8 5 5.2
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 4.75 5.25
V
In
p
ut voltage regulation
VI = 7 V to 25 V
25
°
C
3 100
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 8 V to 12 V
25°C
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
25
°
C
15 100
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
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
0°Cto125°C
1.3
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
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 = 11 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T†
µA7806C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 8 V to 21 V, 25°C 5.75 6 6.25
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 5.7 6.3
V
In
p
ut voltage regulation
VI = 8 V to 25 V
25
°
C
5 120
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 9 V to 13 V
25°C
1.5 60
mV
Ripple rejection VI = 9 V to 19 V, f = 120 Hz 0°C to 125°C 59 75 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
25
°
C
14 120
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
4 60
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 –0.8 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 25°C 45 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.3 8 mA
Bias current change
VI = 8 V to 25 V
0
°
Cto125
°
C
1.3
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
0.5
mA
Short-circuit output current 25°C 550 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 14 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T†
µA7808C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 10.5 V to 23 V, 25°C 7.7 8 8.3
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 7.6 8.4
V
In
p
ut voltage regulation
VI = 10.5 V to 25 V
25
°
C
6 160
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 11 V to 17 V
25°C
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
25
°
C
12 160
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
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
0
°
Cto125
°
C
1
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
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.
electrical characteristics at specified virtual junction temperature, VI = 15 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T†
µA7885C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 11 V to 23.5 V, 25°C 8.15 8.5 8.85
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 8.1 8.9
V
In
p
ut voltage regulation
VI = 10.5 V to 25 V
25
°
C
6 170
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 11 V to 17 V
25°C
2 85
mV
Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 0°C to 125°C 54 70 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
25
°
C
12 170
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
4 85
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 55 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
0
°
Cto125
°
C
1
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
6POST 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
T†
µA7810C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 12.5 V to 25 V, 25°C 9.6 10 10.4
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 9.5 10 10.5
V
In
p
ut voltage regulation
VI = 12.5 V to 28 V
25
°
C
7 200
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 14 V to 20 V
25°C
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
25
°
C
12 200
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
4 100
mV
Output resistance f = 1 kHz 0°C to 125°C 0.018 W
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
0
°
Cto125
°
C
1
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
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
T†
µA7812C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 14.5 V to 27 V, 25°C 11.5 12 12.5
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 11.4 12.6
V
In
p
ut voltage regulation
VI = 14.5 V to 30 V
25
°
C
10 240
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 16 V to 22 V
25°C
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
25
°
C
12 240
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
4 120
mV
Output resistance f = 1 kHz 0°C to 125°C 0.018 W
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
0°Cto125°C
1
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
7
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
T†
µA7815C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 17.5 V to 30 V, 25°C 14.4 15 15.6
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 14.25 15.75
V
In
p
ut voltage regulation
VI = 17.5 V to 30 V
25
°
C
11 300
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 20 V to 26 V
25°C
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
25
°
C
12 300
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
4 150
mV
Output resistance f = 1 kHz 0°C to 125°C 0.019 W
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
0
°
Cto125
°
C
1
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
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 = 27 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T†
µA7818C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 21 V to 33 V, 25°C 17.3 18 18.7
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 17.1 18.9
V
In
p
ut voltage regulation
VI = 21 V to 33 V
25
°
C
15 360
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 24 V to 30 V
25°C
5 180
mV
Ripple rejection VI = 22 V to 32 V, f = 120 Hz 0°C to 125°C 53 69 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A
25
°
C
12 360
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
4 180
mV
Output resistance f = 1 kHz 0°C to 125°C 0.022 W
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°C110 µV
Dropout voltage IO = 1 A 25°C 2 V
Bias current 25°C 4.5 8 mA
Bias current change
VI = 21 V to 33 V
0
°
Cto125
°
C
1
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
0.5
mA
Short-circuit output current 25°C 200 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
8POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 33 V, IO = 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T†
µA7824C
UNIT
PARAMETER
TEST
CONDITIONS
T
J
†
MIN TYP MAX
UNIT
Out
p
ut voltage
I
O
= 5 mA to 1 A, V
= 27 V to 38 V, 25°C 23 24 25
V
O
u
tp
u
t
v
oltage
O,
PD ≤ 15 W
0°C to 125°C 22.8 25.2
V
In
p
ut voltage regulation
VI = 27 V to 38 V
25
°
C
18 480
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 30 V to 36 V
25°C
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
25
°
C
12 480
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA
25°C
4 240
mV
Output resistance f = 1 kHz 0°C to 125°C 0.028 W
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
0
°
Cto125
°
C
1
mA
Bias
c
u
rrent
change
IO = 5 mA to 1 A
0°C
to
125°C
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.
electrical characteristics at specified virtual junction temperature, VI = 10 V , IO = 500 mA, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7805Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 5 V
In
p
ut voltage regulation
VI = 7 V to 25 V 3
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 8 V to 12 V 1
mV
Ripple rejection VI = 8 V to 18 V, f = 120 Hz 78 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 15
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 5
mV
Output resistance f = 1 kHz 0.017 W
Temperature coef ficient of output voltage IO = 5 mA –1.1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 40 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.2 mA
Short-circuit output current 750 mA
Peak output current 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 1 1 V , IO = 500 mA, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7806Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 6 V
In
p
ut voltage regulation
VI = 8 V to 25 V 5
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 9 V to 13 V 1.5
mV
Ripple rejection VI = 9 V to 19 V, f = 120 Hz 75 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 14
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.019 W
Temperature coef ficient of output voltage IO = 5 mA –0.8 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 45 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.3 mA
Short-circuit output current 550 mA
Peak output current 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, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7808Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 8 V
In
p
ut voltage regulation
VI = 10.5 V to 25 V 6
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 11 V to 17 V 2
mV
Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 72 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 12
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.016 W
Temperature coef ficient of output voltage IO = 5 mA –0.8 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 52 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.3 mA
Short-circuit output current 450 mA
Peak output current 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 15 V, IO = 500 mA, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7885Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 8.5 V
In
p
ut voltage regulation
VI = 10.5 V to 25 V 6
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 11 V to 17 V 2
mV
Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 70 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 12
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.016 W
Temperature coef ficient of output voltage IO = 5 mA –0.8 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 55 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.3 mA
Short-circuit output current 450 mA
Peak output current 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 = 17 V , IO = 500 mA, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7810Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 10 V
In
p
ut voltage regulation
VI = 12.5 V to 28 V 7
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 14 V to 20 V 2
mV
Ripple rejection VI = 13 V to 23 V, f = 120 Hz 71 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 12
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.018 W
Temperature coef ficient of output voltage IO = 5 mA –1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 70 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.3 mA
Short-circuit output current 400 mA
Peak output current 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 19 V, IO = 500 mA, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7812Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 12 V
In
p
ut voltage regulation
VI = 14.5 V to 30 V 10
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 16 V to 22 V 3
mV
Ripple rejection VI = 15 V to 25 V, f = 120 Hz 71 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 12
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.018 W
Temperature coef ficient of output voltage IO = 5 mA –1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 75 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.3 mA
Short-circuit output current 350 mA
Peak output current 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 = 23 V , IO = 500 mA, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7815Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 15 V
In
p
ut voltage regulation
VI = 17.5 V to 30 V 11
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 20 V to 26 V 3
mV
Ripple rejection VI = 18.5 V to 28.5 V, f = 120 Hz 70 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 12
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.019 W
Temperature coef ficient of output voltage IO = 5 mA –1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 90 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.4 mA
Short-circuit output current 230 mA
Peak output current 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = 27 V, IO = 500 mA, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7818Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 18 V
In
p
ut voltage regulation
VI = 21 V to 33 V 15
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 24 V to 30 V 5
mV
Ripple rejection VI = 22 V to 32 V, f = 120 Hz 69 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 12
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.022 W
Temperature coef ficient of output voltage IO = 5 mA –1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 110 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.5 mA
Short-circuit output current 200 mA
Peak output current 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, TJ = 25°C
(unless otherwise noted)†
PARAMETER
TEST CONDITIONS
µA7824Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
Output voltage 24 V
In
p
ut voltage regulation
VI = 27 V to 38 V 18
mV
Inp
u
t
v
oltage
reg
u
lation
VI = 30 V to 36 V 6
mV
Ripple rejection VI = 28 V to 38 V, f = 120 Hz 66 dB
Out
p
ut voltage regulation
IO = 5 mA to 1.5 A 12
mV
O
u
tp
u
t
v
oltage
reg
u
lation
IO = 250 mA to 750 mA 4
mV
Output resistance f = 1 kHz 0.028 W
Temperature coef ficient of output voltage IO = 5 mA –1.5 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 170 µV
Dropout voltage IO = 1 A 2 V
Bias current 4.6 mA
Short-circuit output current 150 mA
Peak output current 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
13
POST 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
SLVS056E – MAY 1976 – REVISED JUL Y 1999
14 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
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