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LM78LXX Series
3-Terminal Positive Regulators
LM78LXX Series 3-Terminal Positive Regulators
January 2000
General Description
The LM78LXX series of three terminal positive regulators is
available with several fixed output voltages making them
useful ina wide range of applications. When used as a zener
diode/resistor combination replacement, the LM78LXX usually results in an effective output impedance improvement of
two orders of magnitude, and lower quiescent current. These
regulators can provide local on card regulation, eliminating
the distributionproblems associated with single point regulation. The voltagesavailable allowthe LM78LXXto beused in
logic systems, instrumentation, HiFi, and other solid state
electronic equipment.
The LM78LXX is available in the plastic TO-92 (Z) package,
the plastic SO-8 (M) package and a chip sized package
(8-Bump micro SMD) using National’s micro SMD package
technology.With adequate heat sinking the regulator can deliver 100 mA output current. Current limiting is included to
limit the peak output current to a safe value. Safe area pro-
Connection Diagrams
SO-8 Plastic (M)
(Narrow Body)
tection for the output transistors is provided to limit internal
power dissipation. If internal power dissipation becomes too
high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.
Features
n LM78L05 in micro SMD package
n Output voltage tolerances of
range
n Output current of 100 mA
n Internal thermal overload protection
n Output transistor safe area protection
n Internal short circuit current limit
n Available in plastic TO-92 and plastic SO-8 low profile
packages
n No external components
n Output voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V
Plastic Package (Z)
±
5%over the temperature
(TO-92)
DS007744-2
Top View
8-Bump micro SMD
DS007744-24
Top View
(Bump Side Down)
© 2000 National Semiconductor Corporation DS007744 www.national.com
micro SMD Marking Orientation
Bottom View
Top View
DS007744-3
DS007744-33
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Dissipation (Note 5) Internally Limited
LM78LXX Series
Input Voltage 35V
Storage Temperature −65˚C to +150˚C
Operating Junction Temperature
SO-8 0˚C to 125˚C
micro SMD −40˚C to 85˚C
Soldering Information
Infrared or Convection (20 sec.) 235˚C
Wave Soldering (10 sec.) 260˚C (lead time)
ESD Susceptibility (Note 2) 1kV
LM78LXX Electrical Characteristics Limits in standard typeface are for T
=
25˚C, Bold typeface ap-
J
plies over 0˚C to 125˚C for SO-8 package and −40˚C to 85˚C for micro SMD package. Limits are guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless otherwise specified: I
=
40 mA, C
=
0.33 µF, C
I
O
=
0.1 µF.
LM78L05
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
∆V
∆V
I
Q
V
V
O
O
O
Q
n
Output Voltage 4.8 5 5.2
Line Regulation 7V ≤ VIN≤ 20V 18 75
Load Regulation 1 mA ≤ IO≤ 100 mA 20 60
Quiescent Current 3 5
Quiescent Current Change 8V ≤ VIN≤ 20V 1.0
Output Noise Voltage f=10 Hz to 100 kHz
Ripple Rejection f=120 Hz
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
=
10V
IN
7V ≤ V
1mA≤I
IN
O
≤ 20V
≤40 mA
4.75 5.25
(Note 3)
1mA≤I
(Note 3)
8V ≤ V
1mA≤I
1mA≤I
(Note 4)
8V ≤ V
O
≤70 mA
O
≤ 20V 10 54
IN
≤40 mA 5 30
O
≤40 mA 0.1
O
≤ 16V
IN
=
5mA
4.75 5.25
47 62 dB
40 µV
−0.65 mV/˚C
O
V
mV
mA∆I
(Min) Minimum Value of Input Voltage
V
IN
Required to Maintain Line Regulation
θ
JA
Thermal Resistance
(8-Bump micro SMD)
6.7 7 V
230.9 ˚C/W
LM78L62AC
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
V
O
∆V
O
∆V
O
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Output Voltage 5.95 6.2 6.45
Line Regulation 8.5V ≤ VIN≤ 20V 65 175
Load Regulation 1 mA ≤ IO≤ 100 mA 13 80
=
12V
IN
8.5V ≤ V
1mA≤I
≤ 20V
IN
≤40 mA
O
5.9 6.5
(Note 3)
1mA≤I
(Note 3)
9V ≤ V
1mA≤I
≤70 mA
O
≤ 20V 55 125
IN
≤40 mA 6 40
O
5.9 6.5
V
mV
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LM78L62AC (Continued)
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
I
Q
Q
V
n
Quiescent Current 2 5.5
Quiescent Current Change 8V ≤ VIN≤ 20V 1.5
Output Noise Voltage f=10 Hz to 100 kHz
Ripple Rejection f=120 Hz
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
(Min) Minimum Value of Input Voltage
V
IN
Required to Maintain Line Regulation
=
12V
IN
1mA≤I
(Note 4)
10V ≤ V
O
≤40 mA 0.1
O
40 46 dB
=
IN
5mA
≤ 20V
50 µV
−0.75 mV/˚C
7.9 V
LM78L82AC
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
V
∆V
∆V
I
Q
V
O
O
O
Q
n
Output Voltage 7.87 8.2 8.53
Line Regulation 11V ≤ VIN≤ 23V 80 175
Load Regulation 1 mA ≤ IO≤ 100 mA 15 80
Quiescent Current 2 5.5
Quiescent Current Change 12V ≤ VIN≤ 23V 1.5
Output Noise Voltage f=10 Hz to 100 kHz
Ripple Rejection f=120 Hz
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
=
14V
IN
11V ≤ V
1mA≤I
≤ 23V
IN
≤40 mA
O
7.8 8.6
(Note 3)
1mA≤I
(Note 3)
12V ≤ V
1mA≤I
1mA≤I
(Note 4)
12V ≤ V
O
≤70 mA
O
≤ 23V 70 125
IN
≤40 mA 8 40
O
≤40 mA 0.1
O
≤ 22V
IN
=
5mA
7.8 8.6
39 45 dB
60 µV
−0.8 mV/˚C
LM78LXX Series
mA∆I
V
mV
mA∆I
(Min) Minimum Value of Input Voltage
V
IN
Required to Maintain Line Regulation
9.9 V
LM78L09AC
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage 8.64 9.0 9.36
=
15V
IN
11.5V ≤ V
1mA≤I
≤ 24V
IN
≤40 mA
O
8.55 9.45
(Note 3)
1mA≤I
(Note 3)
≤70 mA
O
8.55 9.45
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V
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LM78L09AC (Continued)
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
∆V
O
Line Regulation 11.5V ≤ VIN≤ 24V 100 200
LM78LXX Series
∆V
O
I
Q
Q
V
n
I
PK
(Min) Minimum Value of Input Voltage
V
IN
Load Regulation 1 mA ≤ IO≤ 100 mA 20 90
Quiescent Current 2 5.5
Quiescent Current Change 11.5V ≤ VIN≤ 24V 1.5
Output Noise Voltage 70 µV
Ripple Rejection f=120 Hz
Peak Output Current 140 mA
Average Output Voltage Tempco I
Required to Maintain Line Regulation
LM78L12AC
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
V
∆V
∆V
I
Q
V
I
PK
O
O
O
Q
n
Output Voltage 11.5 12 12.5
Line Regulation 14.5V ≤ VIN≤ 27V 30 180
Load Regulation 1 mA ≤ IO≤ 100 mA 30 100
Quiescent Current 3 5
Quiescent Current Change 16V ≤ VIN≤ 27V 1
Output Noise Voltage 80 µV
Ripple Rejection f=120 Hz
Peak Output Current 140 mA
Average Output Voltage Tempco I
=
15V
IN
13V ≤ V
1mA≤I
≤ 24V 90 150
IN
≤40 mA 10 45
O
mV
mA∆I
1mA≤I
15V ≤ V
O
≤40 mA 0.1
O
38 44 dB
=
IN
5mA
≤ 25V
−0.9 mV/˚C
10.7 V
=
19V
IN
14.5V ≤ V
1mA≤I
(Note 3)
1mA≤I
(Note 3)
16V ≤ V
1mA≤I
≤ 27V
IN
≤40 mA
O
≤70 mA
O
≤ 27V 20 110
IN
≤40 mA 10 50
O
11.4 12.6
11.4 12.6
V
mV
mA∆I
1mA≤I
15V ≤ V
O
≤40 mA 0.1
O
40 54 dB
=
IN
5mA
≤ 25
−1.0 mV/˚C
(Min) Minimum Value of Input Voltage
V
IN
Required to Maintain Line Regulation
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13.7 14.5 V
Page 5
LM78L15AC
Unless otherwise specified, V
Symbol Parameter Conditions Min Typ Max Units
V
∆V
∆V
I
Q
V
O
O
O
Q
n
Output Voltage 14.4 15.0 15.6
Line Regulation 17.5V ≤ VIN≤ 30V 37 250
Load Regulation 1 mA ≤ IO≤ 100 mA 35 150
Quiescent Current 3 5
Quiescent Current Change 20V ≤ VIN≤ 30V 1
Output Noise Voltage 90 µV
Ripple Rejection f=120 Hz
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
=
23V
IN
17.5V ≤ V
1mA≤I
≤ 30V
IN
≤40 mA
O
14.25 15.75
(Note 3)
1mA≤I
(Note 3)
20V ≤ V
1mA≤I
1mA≤I
18.5V ≤ V
O
≤70 mA
O
≤ 30V 25 140
IN
≤40 mA 12 75
O
≤40 mA 0.1
O
≤ 28.5V
IN
=
5mA
14.25 15.75
37 51 dB
−1.3 mV/˚C
LM78LXX Series
V
mV
mA∆I
(Min) Minimum Value of Input Voltage
V
IN
Required to Maintain Line Regulation
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the devicemay occur. Electricalspecifications do not apply when operating the device
outside of its stated operating conditions.
Note 2: Human body model, 1.5 kΩ in series with 100 pF.
Note 3: Power dissipation ≤ 0.75W.
Note 4: Recommended minimum load capacitance of 0.01 µF to limit high frequency noise.
Note 5: Typical thermal resistance values for the packages are:
Z Package: θ
M Package: θ
micro SMD Package: θ
=
JC
=
JA
60 ˚C/W,=θ
180 ˚C/W
JA
JA
=
230.9˚C/W
=
230 ˚C/W
16.7 17.5 V
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Typical Performance Characteristics
Maximum Average Power
Dissipation (Z Package)
LM78LXX Series
Ripple Rejection
DS007744-14
Peak Output Current
Output Impedance
DS007744-16
Dropout Voltage
DS007744-17
Quiescent Current
Quiescent Current
DS007744-18
DS007744-21
DS007744-19
DS007744-20
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Equivalent Circuit
LM78LXX Series
LM78LXX
Typical Applications
Fixed Output Regulator
*
Required if the regulator is located more than 3" from the power supply filter.
*
*See (Note 4) in the electrical characteristics table.
DS007744-7
DS007744-8
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Typical Applications (Continued)
LM78LXX Series
=
V
5V + (5V/R1 + I
OUT
>
3IQ, load regulation (Lr) ≈ [(R1 + R2)/R1] (Lrof LM78L05)
5V/R1
=
I
OUT
>
I
Q
/R1) + I
(V
OUT
=
1.5 mAover line and load changes
)R2
Q
Q
Adjustable Output Regulator
DS007744-9
Current Regulator
DS007744-10
5V, 500 mA Regulator with Short Circuit Protection
*Solid tantalum.
*
Heat sink Q1.
*
**
Optional: Improves ripple rejection and transient response.
*
Load Regulation: 0.6%0 ≤ I
≤ 250 mA pulsed with t
L
=
50 ms.
ON
±
15V, 100 mA Dual Power Supply
DS007744-11
*Solid tantalum.
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DS007744-12
Page 9
Typical Applications (Continued)
Variable Output Regulator 0.5V-18V
*Solid tantalum.
=
V
OUT
V
OUT
A 0.5V output will correspond to (R2/R4)=0.1 (R3/R4)=0.9
+5V,R1=(−VIN/I
V
G
=
5V (R2/R4) for (R2 + R3)=(R4 + R5)
Q LM78L05
)
LM78LXX Series
DS007744-13
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Physical Dimensions inches (millimeters) unless otherwise noted
LM78LXX Series
NOTES: UNLESS OTHERWISE SPECIFIED
1. EPOXY COATING
2. 63Sn/37Pb EUTECTIC BUMP
3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.
4. PIN 1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. REMAINING PINS ARE
NUMBERED COUNTERCLOCKWISE.
5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X
AGE LENGTH AND X
IS PACKAGE HEIGHT.
3
IS PACKAGE WIDTH, X2IS PACK-
1
6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.
8-Bump micro SMD
Order Number LM78L05IBP or LM78L05IBPX
NS Package Number BPA08AAA
=
X
1.285 X
1
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=
2
1.285 X
=
0.7
3
Page 11
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
LM78LXX Series
S.O. Package (M)
Order Number LM78L05ACM, LM78L12ACM or LM78L15ACM
NS Package Number M08A
Molded Offset TO-92 (Z)
Order Number LM78L05ACZ, LM78L09ACZ, LM78L12ACZ,
LM78L15ACZ, LM78L62ACZ or LM78L82ACZ
NS Package Number Z03A
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Notes
LM78LXX Series 3-Terminal Positive Regulators
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
www.national.com
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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Email: europe.support@nsc.com
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