LM340LAZ-5.0 [NSC]
3-Terminal Positive Regulators; 三端稳压器正
| 型号： | LM340LAZ-5.0 |
| 厂家： | 
National Semiconductor |
| 描述： | 3-Terminal Positive Regulators |
| 文件： | 总6页 (文件大小：146K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February 1995
LM140L/LM340L Series 3-Terminal Positive Regulators
General Description
The LM140L series of three terminal positive regulators is
available with several fixed output voltages making them
useful in a wide range of applications. The LM140LA is an
improved version of the LM78LXX series with a tighter out-
put voltage tolerance (specified over the full military temper-
ature range), higher ripple rejection, better regulation and
lower quiescent current. The LM140LA regulators have
becomes too high for the heat sinking provided, the thermal
shut-down circuit takes over, preventing the IC from over-
heating.
For applications requiring other voltages, see LM117L Data
Sheet.
Features
Y
g
2%
V
specification, 0.04%/V line regulation, and
OUT
Line regulation of 0.04%/V
0.01%/mA load regulation. When used as a zener diode/re-
sistor combination replacement, the LM140LA usually re-
sults 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 distribution problems associated with single point regu-
lation. The voltages available allow the LM140LA to be used
in logic systems, instrumentation, Hi-Fi, and other solid state
electronic equipment. Although designed primarily as fixed
voltage regulators, these devices can be used with external
components to obtain adjustable voltages and currents.
Y
Load regulation of 0.01%/mA
Y
e
g
Output voltage tolerances of 2% at T
25 C and
§
j
g
g
4% over the temperature range (LM140LA)
3% over the temperature range (LM340LA)
Y
Y
Y
Y
Y
Output current of 100 mA
Internal thermal overload protection
Output transistor safe area protection
Internal short circuit current limit
Available in metal TO-39 low profile package
(LM140LA/LM340LA) and plastic TO-92 (LM340LA)
The LM140LA/LM340LA are available in the low profile
metal three lead TO-39 (H) and the LM340LA are also avail-
able in the plastic TO-92 (Z). 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 protection for the output transistor is provided to
limit internal power dissipation. If internal power dissipation
Output Voltage Options
LM140LA-5.0
LM140LA-12
LM140LA-15
5V
12V
15V
LM340LA-5.0
LM340LA-12
LM340LA-15
5V
12V
15V
Connection Diagrams
TO-39 Metal Can Package (H)
TL/H/7782–2
Bottom View
Order Number LM140LAH-5.0, LM140LAH-5.0/883, LM140LAH-12,
LM140LAH-12/883, LM140LAH-15, LM140LAH-15/883, LM340LAH-5.0, LM340LAH-12 or LM340LAH-15
See NS Package Number H03A
TO-92 Plastic Package (Z)
TL/H/7782–3
Bottom View
Order Number LM340LAZ-5.0, LM340LAZ-12 or LM340LAZ-15
See NS Package Number Z03A
C
1995 National Semiconductor Corporation
TL/H/7782
RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
(Note 4)
Operating Temperature Range
LM140LA
LM340LA
b
a
a
55 C to 125 C
§
§
0 C to 70 C
§
§
a
Maximum Junction Temperature
150 C
§
Input Voltage
35V
Storage Temperature Range
Metal Can (H package)
Molded TO-92
b
b
a
65 C to 150 C
a
55 C to 150 C
Internal Power Dissipation (Note 1)
Internally Limited
§
§
§
§
Lead Temperature (Soldering, 10 sec.)
Metal Can
Plastic TO-92
a
a
300 C
§
230 C
§
Electrical Characteristics
Test conditions unless otherwise specified. T
e b
a
55 C to 125 C (LM140LA), T
e
a
0 C to 70 C (LM340LA), I
e
40 mA,
O
§
§
§
§
A
A
e
e
0.01 mF.
C
0.33 mF, C
IN
O
Output Voltage Option
Input Voltage (unless otherwise noted)
5.0V
10V
12V
19V
15V
23V
Units
Symbol
Parameter
Conditions
Min Typ Max Min Typ Max Min Typ Max
e
V
O
Output Voltage
T
j
25 C
§
4.9
4.8
5
5.1 11.75 12 12.25 14.7 15 15.3
e
b
Output Voltage LM140LA
Over Temp.
I
1
100 mA
5.2 11.5
(14.5–27)
12.35 14.55
12.5 14.4
15.6
O
(7.2–20)
(17.6–30)
V
(Note 3)
e
e
b
b
LM340LA
I
I
1
1
100 mA or
40 mA and
4.85
5.15 11.65
15.45
O
O
(7–20)
(14.3–27)
30
(17.5–30)
e
V
( )V
IN
e
e
e
DV
Line Regulation
Load Regulation
T
25 C
§
I
40 mA
18 30
(7–25)
18 30
65
65
37
(17.3–30)
37
70
70
50
O
j
j
O
e
V
( )V
IN
(14.2–30)
e
I
100 mA
30
(14.5–30)
10
O
mV
e
V
( )V
IN
(7.5–25)
5
(17.5–30)
12
e
e
b
b
T
25 C
§
I
O
1
1
40 mA
20
40
80
I
100 mA
O
20 40
12
30
35 100
30
Long Term
Stability
mV
24
3
1000 hrs
e
e
I
Quiescent
Current
T
T
25 C
§
125 C
3
4.5
4.2
0.1
0.5
4.5
4.2
0.1
0.5
3.1 4.5
4.2
O
j
j
mA
mA
§
e
e
b
1 40 mA
DI
Quiescent
T
25 C DLoad I
0.1
§
Q
j
O
Current Change
DLine
0.5
e
V
( )V
IN
(7.5–25)
40
(14.3–30)
80
(17.5–30)
e
V
N
Output Noise
Voltage
T
f
25 C (Note 2)
§
10 Hz–10 kHz
j
90
52
mV
e
e
DV
e
IN
Ripple Rejection
f
120 Hz, V
( )V
55 62
(7.5–18)
47
54
45
IN
dB
DV
OUT
(14.5–25)
(17.5–28.5)
Input Voltage
Required to
Maintain Line
Regulation
e
e
T
25 C, I
§
40 mA
7
14.2
17.3
V
j
O
Note 1: Thermal resistance of H-package is typically 26 C/W i , 250 C/W i still air, and 94 C/W i 400 lf/min of air. For the Z-package is 60 C/W i , 232 C/
§
§
§
§
§
jC
jA
jA
jC
W i still air, and 88 C/W i at 400 lf/min of air. The maximum junction temperature shall not exceed 125 C on electrical parameters.
§
§
jA
Note 2: It is recommended that a minimum load capacitor of 0.01 mF be used to limit the high frequency noise bandwidth.
Note 3: The temperature coefficient of V is typically within 0.01% V / C.
jA
§
O
OUT
Note 4: A military RETS specification is available upon request. At the time of printing, the LM140LA-5.0, -12, and -15 RETS specifications complied with the Min
and Max limits in this table. The LM140LAH-5.0, LM140LAH-12, and LM140LAH-15 may also be procured as Standard Military Drawings.
2
Typical Performance Characteristics
Maximum Average
Power Dissipation
(Metal Can Package)
Maximum Average Power
Dissipation
Maximum Average Power
Dissipation (Plastic Package)
TL/H/7782–4
Typical Applications
Fixed Output Regulator
Adjustable Output Regulator
TL/H/7782–5
*Required if the regulator is located far from the power supply filter.
**See note 3 in the electrical characteristics table.
TL/H/7782–6
a
R2)/R1 (L, of LM140LA-5.0)
e
a
a
I
O
V
5V
(5V/R1
) R2
OUT
e
[
3 I load regulation (L,) (R1
]
5V/R1
O
3
Equivalent Circuit
TL/H/7782–1
4
Physical Dimensions inches (millimeters)
TO-39 Metal Can Package (H)
Order Number LM140LAH-5.0, LM140LAH-5.0/883, LM140LAH-12, LM140LAH-12/883,
LM140LAH-15, LM140LAH-15/883, LM340LAH-5.0, LM340LAH-12 or LM340LAH-15
NS Package Number H03A
5
Physical Dimensions inches (millimeters) (Continued)
TO-92 Plastic Package (Z)
Order Number LM340LAZ-5.0, LM340LAZ-12, or LM340LAZ-15
NS Package Number Z03A
LIFE SUPPORT POLICY
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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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