LM78L12 [NSC]
3-Terminal Positive Regulators; 三端稳压器正
| 型号： | LM78L12 |
| 厂家： | 
National Semiconductor |
| 描述： | 3-Terminal Positive Regulators |
| 文件： | 总12页 (文件大小：214K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
January 2000
LM78LXX Series
3-Terminal Positive Regulators
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 cir-
cuit takes over preventing the IC from overheating.
General Description
The LM78LXX series of three terminal positive regulators is
available with several fixed output voltages making them
useful in a wide range of applications. When used as a zener
diode/resistor combination replacement, the LM78LXX usu-
ally results in an effective output impedance improvement of
two orders of magnitude, and lower quiescent current. These
Features
n LM78L05 in micro SMD package
±
%
5 over the temperature
n Output voltage tolerances of
range
n Output current of 100 mA
regulators can provide local on card regulation, eliminating
the distribution problems associated with single point regula-
tion. The voltages available allow the LM78LXX to be used in
logic systems, instrumentation, HiFi, and other solid state
electronic equipment.
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
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 de-
liver 100 mA output current. Current limiting is included to
limit the peak output current to a safe value. Safe area pro-
n No external components
n Output voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V
Connection Diagrams
SO-8 Plastic (M)
(Narrow Body)
(TO-92)
Plastic Package (Z)
DS007744-3
DS007744-2
Bottom View
Top View
micro SMD Marking Orientation
8-Bump micro SMD
DS007744-24
Top View
(Bump Side Down)
DS007744-33
Top View
© 2000 National Semiconductor Corporation
DS007744
www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Junction Temperature
SO-8
0˚C to 125˚C
micro SMD
−40˚C to 85˚C
Soldering Information
Infrared or Convection (20 sec.)
Wave Soldering (10 sec.)
ESD Susceptibility (Note 2)
235˚C
260˚C (lead time)
1kV
Power Dissipation (Note 5)
Input Voltage
Internally Limited
35V
Storage Temperature
−65˚C to +150˚C
=
LM78LXX Electrical Characteristics Limits in standard typeface are for TJ 25˚C, Bold typeface ap-
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 produc-
tion testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless otherwise specified: IO
=
=
=
40 mA, CI 0.33 µF, CO 0.1 µF.
LM78L05
=
Unless otherwise specified, VIN 10V
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VO
Output Voltage
4.8
5
5.2
7V ≤ VIN ≤ 20V
1 mA ≤ IO ≤ 40 mA
(Note 3)
4.75
4.75
5.25
V
1 mA ≤ IO ≤ 70 mA
(Note 3)
5.25
∆VO
Line Regulation
Load Regulation
7V ≤ VIN ≤ 20V
18
10
20
5
75
54
60
30
5
8V ≤ VIN ≤ 20V
mV
∆VO
1 mA ≤ IO ≤ 100 mA
1 mA ≤ IO ≤ 40 mA
IQ
Quiescent Current
3
∆IQ
Quiescent Current Change
8V ≤ VIN ≤ 20V
1.0
0.1
mA
µV
1 mA ≤ IO ≤ 40 mA
=
Vn
Output Noise Voltage
Ripple Rejection
f
10 Hz to 100 kHz
40
(Note 4)
=
f
120 Hz
47
62
dB
mA
8V ≤ VIN ≤ 16V
IPK
Peak Output Current
140
=
IO 5 mA
Average Output Voltage Tempco
−0.65
mV/˚C
VIN (Min)
Minimum Value of Input Voltage
Required to Maintain Line Regulation
6.7
7
V
θJA
Thermal Resistance
(8-Bump micro SMD)
230.9
˚C/W
LM78L62AC
=
Unless otherwise specified, VIN 12V
Symbol Parameter
Conditions
Min
Typ
Max
Units
VO
Output Voltage
5.95
6.2
6.45
8.5V ≤ VIN ≤ 20V
1 mA ≤ IO ≤ 40 mA
(Note 3)
5.9
5.9
6.5
V
1 mA ≤ IO ≤ 70 mA
(Note 3)
6.5
∆VO
∆VO
Line Regulation
Load Regulation
8.5V ≤ VIN ≤ 20V
9V ≤ VIN ≤ 20V
65
55
13
6
175
125
80
mV
1 mA ≤ IO ≤ 100 mA
1 mA ≤ IO ≤ 40 mA
40
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2
LM78L62AC (Continued)
=
Unless otherwise specified, VIN 12V
Symbol Parameter
Conditions
Min
Typ
Max
5.5
1.5
0.1
Units
IQ
Quiescent Current
2
∆IQ
Quiescent Current Change
8V ≤ VIN ≤ 20V
mA
1 mA ≤ IO ≤ 40 mA
=
Vn
Output Noise Voltage
Ripple Rejection
f
10 Hz to 100 kHz
50
µV
(Note 4)
=
f
120 Hz
40
46
dB
mA
10V ≤ VIN ≤ 20V
IPK
Peak Output Current
140
=
IO 5 mA
Average Output Voltage Tempco
−0.75
mV/˚C
VIN (Min)
Minimum Value of Input Voltage
Required to Maintain Line Regulation
7.9
V
LM78L82AC
=
Unless otherwise specified, VIN 14V
Symbol Parameter
Conditions
Min
Typ
Max
Units
VO
Output Voltage
7.87
8.2
8.53
11V ≤ VIN ≤ 23V
1 mA ≤ IO ≤ 40 mA
(Note 3)
7.8
7.8
8.6
V
1 mA ≤ IO ≤ 70 mA
(Note 3)
8.6
∆VO
∆VO
Line Regulation
Load Regulation
11V ≤ VIN ≤ 23V
12V ≤ VIN ≤ 23V
80
70
15
8
175
125
80
mV
1 mA ≤ IO ≤ 100 mA
1 mA ≤ IO ≤ 40 mA
40
IQ
Quiescent Current
2
5.5
1.5
0.1
∆IQ
Quiescent Current Change
12V ≤ VIN ≤ 23V
mA
µV
1 mA ≤ IO ≤ 40 mA
=
Vn
Output Noise Voltage
Ripple Rejection
f
10 Hz to 100 kHz
60
(Note 4)
=
f
120 Hz
39
45
dB
mA
12V ≤ VIN ≤ 22V
IPK
Peak Output Current
140
−0.8
=
IO 5 mA
Average Output Voltage Tempco
mV/˚C
VIN (Min)
Minimum Value of Input Voltage
Required to Maintain Line Regulation
9.9
V
LM78L09AC
=
Unless otherwise specified, VIN 15V
Symbol Parameter
Conditions
Min
Typ
Max
Units
VO
Output Voltage
8.64
9.0
9.36
11.5V ≤ VIN ≤ 24V
1 mA ≤ IO ≤ 40 mA
(Note 3)
8.55
8.55
9.45
9.45
V
1 mA ≤ IO ≤ 70 mA
(Note 3)
3
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LM78L09AC (Continued)
=
Unless otherwise specified, VIN 15V
Symbol Parameter
∆VO
Conditions
11.5V ≤ VIN ≤ 24V
13V ≤ VIN ≤ 24V
Min
Typ
100
90
20
10
2
Max
200
150
90
Units
Line Regulation
Load Regulation
mV
∆VO
1 mA ≤ IO ≤ 100 mA
1 mA ≤ IO ≤ 40 mA
45
IQ
Quiescent Current
5.5
1.5
0.1
∆IQ
Quiescent Current Change
11.5V ≤ VIN ≤ 24V
1 mA ≤ IO ≤ 40 mA
mA
Vn
Output Noise Voltage
Ripple Rejection
70
44
µV
dB
=
f
120 Hz
38
15V ≤ VIN ≤ 25V
IPK
Peak Output Current
140
−0.9
mA
=
IO 5 mA
Average Output Voltage Tempco
mV/˚C
VIN (Min)
Minimum Value of Input Voltage
Required to Maintain Line Regulation
10.7
V
LM78L12AC
=
Unless otherwise specified, VIN 19V
Symbol Parameter
Conditions
Min
Typ
Max
Units
VO
Output Voltage
11.5
12
12.5
14.5V ≤ VIN ≤ 27V
1 mA ≤ IO ≤ 40 mA
(Note 3)
11.4
11.4
12.6
V
1 mA ≤ IO ≤ 70 mA
(Note 3)
12.6
∆VO
∆VO
Line Regulation
Load Regulation
14.5V ≤ VIN ≤ 27V
16V ≤ VIN ≤ 27V
30
20
30
10
3
180
110
100
50
mV
mA
1 mA ≤ IO ≤ 100 mA
1 mA ≤ IO ≤ 40 mA
IQ
Quiescent Current
5
∆IQ
Quiescent Current Change
16V ≤ VIN ≤ 27V
1
1 mA ≤ IO ≤ 40 mA
0.1
Vn
Output Noise Voltage
Ripple Rejection
80
54
µV
dB
=
f
120 Hz
40
15V ≤ VIN ≤ 25
IPK
Peak Output Current
140
−1.0
mA
=
IO 5 mA
Average Output Voltage Tempco
mV/˚C
VIN (Min)
Minimum Value of Input Voltage
Required to Maintain Line Regulation
13.7
14.5
V
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4
LM78L15AC
=
Unless otherwise specified, VIN 23V
Symbol Parameter
Conditions
Min
Typ
Max
Units
VO
Output Voltage
14.4
15.0
15.6
17.5V ≤ VIN ≤ 30V
1 mA ≤ IO ≤ 40 mA
(Note 3)
14.25
14.25
15.75
V
1 mA ≤ IO ≤ 70 mA
(Note 3)
15.75
∆VO
∆VO
IQ
Line Regulation
Load Regulation
17.5V ≤ VIN ≤ 30V
20V ≤ VIN ≤ 30V
37
25
35
12
3
250
140
150
75
mV
mA
1 mA ≤ IO ≤ 100 mA
1 mA ≤ IO ≤ 40 mA
Quiescent Current
5
∆IQ
Quiescent Current Change
20V ≤ VIN ≤ 30V
1
1 mA ≤ IO ≤ 40 mA
0.1
Vn
Output Noise Voltage
Ripple Rejection
90
51
µV
dB
=
f
120 Hz
37
18.5V ≤ VIN ≤ 28.5V
IPK
Peak Output Current
140
−1.3
mA
=
IO 5 mA
Average Output Voltage Tempco
mV/˚C
VIN (Min)
Minimum Value of Input Voltage
Required to Maintain Line Regulation
16.7
17.5
V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications 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:
=
=
=
230 ˚C/W
JA
Z Package: θ
60 ˚C/W,
θ
JC
=
M Package: θ
180 ˚C/W
JA
=
micro SMD Package: θ
230.9˚C/W
JA
5
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Typical Performance Characteristics
Maximum Average Power
Dissipation (Z Package)
Dropout Voltage
Peak Output Current
DS007744-17
DS007744-16
DS007744-14
Ripple Rejection
Output Impedance
Quiescent Current
DS007744-18
DS007744-20
DS007744-19
Quiescent Current
DS007744-21
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6
Equivalent Circuit
LM78LXX
DS007744-7
Typical Applications
Fixed Output Regulator
DS007744-8
*
*
Required if the regulator is located more than 3" from the power supply filter.
*See (Note 4) in the electrical characteristics table.
7
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Typical Applications (Continued)
Adjustable Output Regulator
DS007744-9
=
V
5V + (5V/R1 + I ) R2
Q
OUT
>
5V/R1 3 I , load regulation (L ) ≈ [(R1 + R2)/R1] (L of LM78L05)
Q
r
r
Current Regulator
DS007744-10
=
I
(V
/R1) + I
OUT Q
OUT
=
>
I
1.5 mA over line and load changes
Q
5V, 500 mA Regulator with Short Circuit Protection
DS007744-11
*Solid tantalum.
*
* Heat sink Q1.
**
*
Optional: Improves ripple rejection and transient response.
=
Load Regulation: 0.6% 0 ≤ I ≤ 250 mA pulsed with t
50 ms.
L
ON
±
15V, 100 mA Dual Power Supply
DS007744-12
*Solid tantalum.
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8
Typical Applications (Continued)
Variable Output Regulator 0.5V-18V
DS007744-13
*Solid tantalum.
=
=
=
V
V
V
G
+ 5V, R1 (−V /I
)
OUT
IN Q LM78L05
=
5V (R2/R4) for (R2 + R3) (R4 + R5)
OUT
=
=
A 0.5V output will correspond to (R2/R4) 0.1 (R3/R4) 0.9
9
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Physical Dimensions inches (millimeters) unless otherwise noted
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 X1 IS PACKAGE WIDTH, X2 IS PACK-
AGE LENGTH AND X3 IS PACKAGE HEIGHT.
6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.
8-Bump micro SMD
Order Number LM78L05IBP or LM78L05IBPX
NS Package Number BPA08AAA
=
=
=
X1 1.285 X2 1.285 X3 0.7
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10
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
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
11
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Notes
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.
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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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