April 3, 2008
LM140QML
Three Terminal Positive Regulators
General Description
The monolithic 3-terminal positive voltage regulators employ
internal current-limiting, thermal shutdown and safe-area
compensation, making them essentially indestructible. If ad-
equate heat sinking is provided, they can deliver over 0.5A
output current. They are intended as fixed voltage regulators
in a wide range of applications including local (on-card) reg-
ulation for elimination of noise and distribution problems as-
sociated with single-point regulation. In addition to use as
fixed voltage regulators, these devices can be used with ex-
ternal components to obtain adjustable output voltages and
currents.
Considerable effort was expended to make the entire series
of regulators easy to use and minimize the number of external
components. It is not necessary to bypass the output, al-
though this does improve transient response. Input bypassing
is needed only if the regulator is located far from the filter ca-
pacitor of the power supply.
Features
Complete specifications at 1.0A and 0.5A loads
No external components
Internal thermal overload protection
Internal short circuit current-limiting
Output transistor safe-area compensation
Ordering Information
NS Part Number SMD Part Number NS Package Number Package Description
LM140H-5.0/883 H03A 3LD TO-39 Metal Can
LM140H-12/883 H03A 3LD TO-39 Metal Can
LM140H-15/883 H03A 3LD TO-39 Metal Can
LM140K-5.0/883 K02C 2LD TO-3 Metal Can
LM140K-12/883 K02C 2LD TO-3 Metal Can
LM140K-15/883 K02C 2LD TO-3 Metal Can
Connection Diagrams
Steel Metal Can TO-39 Package (H)
20155401
Bottom View
See NS Package Number H03A
TO-3 Metal Can (K)
20155402
Bottom View
See NS Package Number K02C
© 2008 National Semiconductor Corporation 201554 www.national.com
LM140QML Three Terminal Positive Regulators
Absolute Maximum Ratings (Note 1)
DC Input Voltage 35V
Internal Power Dissipation (Note 2) Internally Limited
Maximum Junction Temperature (TJmax) 150°C
Storage Temperature Range -65°C TA +150°C
Operating Temperature Range -55°C TA +125°C
Lead Temperature (Soldering 10 seconds) 300°C
Thermal Resistance
 θJA
T0−39 (Still Air) 232°C/W
T0−39 (500 LF/Min Air Flow) 77°C/W
T0−3 (Still Air) 35°C/W
T0−3 (500 LF/Min Air Flow) TBD
 θJC
T0−39 15°C/W
T0−3 4°C/W
ESD Susceptibility (Note 3) 2KV
Quality Conformance Inspection
MIL-Std-883, Method 5005 - Group A
Subgroup Description Temp °C
1 Static tests at +25
2 Static tests at +125
3 Static tests at -55
4 Dynamic tests at +25
5 Dynamic tests at +125
6 Dynamic tests at -55
7 Functional tests at +25
8A Functional tests at +125
8B Functional tests at -55
9 Switching tests at +25
10 Switching tests at +125
11 Switching tests at -55
12 Settling time at +25
13 Settling time at +125
14 Settling time at -55
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LM140QML
LM140H–5.0 Electrical Characteristics
DC Parameters
The following conditions apply, unless otherwise specified.
DC: VI = 10V, IL =350mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
VOOutput Voltage VI = 35V, IL = 5mA 4.75 5.75 V 1
4.80 5.20 V 1
VI = 8V 4.70 5.30 V 1, 2, 3
VI = 8V, IL = 5mA 4.70 5.30 V 1, 2, 3
VI = 20V, IL = 5mA 4.70 5.30 V 1, 2, 3
VI = 20V 4.70 5.30 V 1, 2, 3
RLine Line Regulation 7V VI 25V, IL = 200mA -50 50 mV 1
8V VI 25V, IL = 200mA -50 50 mV 2, 3
8V VI 20V, IL = 200mA -25 25 mV 1
-40 40 mV 2, 3
RLoad Load Regulation 5mA IL 500mA -50 50 mV 1
-100 100 mV 2, 3
5mA IL 200mA -25 25 mV 1
-50 50 mV 2, 3
IQQuiescent Current 7.0 mA 1, 2, 3
ΔIQQuiescent Current Change 8V VI 25V, IL = 200mA -0.8 0.8 mA 1, 2, 3
5mA IL 350mA -0.5 0.5 mA 1, 2, 3
IPk Peak Current VI - VO = 7V (Note 4) 0.4 2.0 A 1, 2, 3
VDO Dropout Voltage (Note 5) 2.5 V 1
IOS Short Circuit Current VI = 35V 1.0 A 1, 2, 3
AC Parameters
The following conditions apply, unless otherwise specified.
AC: VI = 10V, IL =350mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
RR Ripple Rejection IL = 125mA, eI = 1VRMS,
ƒ = 2.4KHz, VI = 10V
62 dB 4, 5, 6
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LM140QML
LM140H–12 Electrical Characteristics
DC Parameters
The following conditions apply, unless otherwise specified.
DC: VI = 19V, IL =350mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
VOOutput Voltage VI = 35V, IL = 5mA 11.4 12.6 V 1
11.5 12.5 V 1
VI = 15.5V 11.4 12.6 V 1, 2, 3
VI = 15.5V, IL = 5mA 11.4 12.6 V 1, 2, 3
VI = 27V, IL = 5mA 11.4 12.6 V 1, 2, 3
VI = 27V 11.4 12.6 V 1, 2, 3
RLine Line Regulation 14.5V VI 30V, IL = 200mA -60 60 mV 1
15.0V VI 30V, IL = 200mA -120 120 mV 2, 3
16V VI 25V, IL = 200mA -30 30 mV 1
-60 60 mV 2, 3
RLoad Load Regulation 5mA IL 500mA -120 120 mV 1
-240 240 mV 2, 3
5mA IL 200mA -60 60 mV 1
-120 120 mV 2, 3
IQQuiescent Current 7.0 mA 1, 2, 3
ΔIQQuiescent Current Change 14.5V VI 30V, IL = 200mA -0.8 0.8 mA 1, 2, 3
5mA IL 350mA -0.5 0.5 mA 1, 2, 3
IPk Peak Current VI - VO = 7V (Note 4) 0.4 2.0 A 1, 2, 3
VDO Dropout Voltage (Note 5) 2.5 V 1
IOS Short Circuit Current VI = 35V 1.0 A 1, 2, 3
AC Parameters
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
RR Ripple Rejection VI = 17V, IL = 125mA,
eI = 1VRMS, ƒ = 2.4KHz
55 dB 4, 5, 6
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LM140QML
LM140H–15 Electrical Characteristics
DC Parameters
The following conditions apply, unless otherwise specified.
DC: VI = 23V, IL =350mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
VOOutput Voltage VI = 35V, IL = 5mA 14.25 15.75 V 1
14.40 15.60 V 1
VI = 18.5V 14.25 15.75 V 1, 2, 3
VI = 18.5V, IL = 5mA 14.25 15.75 V 1, 2, 3
VI = 30V, IL = 5mA 14.25 15.75 V 1, 2, 3
VI = 30V 14.25 15.75 V 1, 2, 3
RLine Line Regulation 17.5V VI 30V, IL = 200mA -60 60 mV 1
18.5V VI 30V, IL = 200mA -120 120 mV 2, 3
20V VI 30V, IL = 200mA -30 30 mV 1
-60 60 mV 2, 3
RLoad Load Regulation 5mA IL 500mA -150 150 mV 1
-300 300 mV 2, 3
5mA IL 200mA -75 75 mV 1
-150 150 mV 2, 3
IQQuiescent Current 7.0 mA 1, 2, 3
ΔIQQuiescent Current Change 17.5V VI 30V, IL = 200mA -0.8 0.8 mA 1, 2, 3
5mA IL 350mA -0.5 0.5 mA 1, 2, 3
IPk Peak Current VI - VO = 7V (Note 4) 0.4 2.0 A 1, 2, 3
VDO Dropout Voltage (Note 5) 2.5 V 1
IOS Short Circuit Current VI = 35V 1.0 A 1, 2, 3
AC Parameters
The following conditions apply, unless otherwise specified.
AC: VI = 23V, IL =350mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
RR Ripple Rejection VI=20V, IL=125mA,
eI=1VRMS, ƒ = 2.4KHz
54 dB 4, 5, 6
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LM140QML
LM140K–5.0 Electrical Characteristics
DC Parameters
The following conditions apply, unless otherwise specified.
DC: VI = 10V, IL = 5mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
IQQuiescent Current IL = 1A 6.0 mA 1
7.0 mA 2, 3
ΔQQuiescent Current Change IL = 1A, 8V VI 20mA -0.8 0.8 mA 1
IL 500mA, 8V VI 25V -0.8 0.8 mA 1, 2, 3
5mA, IL 1.0A -0.5 0.5 mA 1, 2, 3
VOOutput Voltage 4.80 5.20 V 1
VI = 8V 4.75 5.25 V 1, 2, 3
VI = 8V, IL = 1A 4.75 5.25 V 1, 2, 3
VI = 20V 4.75 5.25 V 1, 2, 3
VI = 20V, IL = 1A 4.75 5.25 V 1, 2, 3
RLine Line Regulation IL = 500mA, 7V VI 25V -50 50 mV 1, 2, 3
IL = 1A, 7.3V VI 20V -50 50 mV 1
IL = 1A, 8.0V VI 20V -50 50 mV 2, 3
IL = 1A, 8V VI 12V -25 25 mV 1, 2, 3
RLoad Load Regulation 5mA IL 1.5A -50 50 mV 1
5mA IL 1.0A -50 50 mV 2, 3
250mA IL 750mA -25 25 mV 1
IOS Current Limit -4.0 -0.02 A 1
VI = 35V -2.0 -0.02 A 1
AC Parameters
The following conditions apply, unless otherwise specified.
AC: VI = 10V, IL = 5mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
RR Ripple Rejection ƒ = 120Hz, IL = 350mA,
eI = 1VRMS
68 dB 4
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LM140QML
LM140K–12 Electrical Characteristics
DC Parameters
The following conditions apply, unless otherwise specified.
DC: VI = 19V, IL = 5mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
IQQuiescent Current IL = 1A 6.0 mA 1
7.0 mA 2, 3
ΔIQQuiescent Current Change IL = 1A, 15.5V VI 27V -0.8 0.8 mA 1
IL = 500mA 15V VI 30V -0.8 0.8 mA 1, 2, 3
5mA IL 1A -0.5 0.5 mA 1, 2, 3
VOOutput Voltage 11.5 12.5 V 1
VI = 15.5V 11.4 12.6 V 1, 2, 3
VI = 15.5V, IL = 1A 11.4 12.6 V 1, 2, 3
VI = 27V 11.4 12.6 V 1, 2, 3
VI = 27V, IL = 1A 11.4 12.6 V 1, 2, 3
RLine Line Regulation IL = 500mA, 14.5V VI 25V -120 120 mV 1, 2, 3
IL = 1A, 14.6V VI 27V -120 120 mV 1
IL = 1A, 15.0V VI 27V -120 120 mV 2, 3
IL = 1A, 16V VI 22V -60 60 mV 1, 2, 3
RLoad Load Regulation 5mA IL 1.5A -120 120 mV 1
5mA IL 1.0A -120 120 mV 2, 3
250mA IL 750mA -60 60 mV 1
IOS Current Limit VI = 17V -3.5 -0.02 A 1
VI = 35V -2.0 -0.02 A 1
AC Parameters
The following conditions apply, unless otherwise specified.
AC: VI = 19V, IL = 5mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
RR Ripple Rejection ƒ = 120Hz, IL = 350mA,
eI = 1VRMS
61 dB 4
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LM140QML
LM140K–15 Electrical Characteristics
DC Parameters
The following conditions apply, unless otherwise specified.
DC: VI = 23V, IL = 5mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
IQQuiescent Current IL = 1A 6.0 mA 1
7.0 mA 2, 3
ΔIQQuiescent Current Change IL = 1A, 18.5V VI 30V -0.8 0.8 mA 1
IL = 500mA, 18.5V VI 30V -0.8 0.8 mA 2, 3
5mA IL 1A -0.5 0.5 mA 1, 2, 3
VOOutput Voltage 14.4 15.6 V 1
VI = 18.5V 14.25 15.75 V 1, 2, 3
VI = 18.5V, IL = 1A 14.25 15.75 V 1, 2, 3
VI = 30V 14.25 15.75 V 1, 2, 3
VI = 30V, IL = 1A 14.25 15.75 V 1, 2, 3
RLine Line Regulation IL = 500mA, 17.5V VI 30V -150 150 mV 1
IL = 500mA, 18.5V VI 30V -150 150 mV 2, 3
IL = 1A, 17.7V VI 30V -75 75 mV 1
IL = 1A, 20V VI 26V -75 75 mV 1, 2, 3
RLoad Load Regulation 5mA IL 1.5A -150 150 mV 1
5mA IL 1.0A -150 150 mV 2, 3
250mA IL 750mA -75 75 mV 1
IOS Current Limit VI = 20V -3.5 -0.02 A 1
VI =35V -2.0 -0.02 A 1
AC Parameters
The following conditions apply, unless otherwise specified.
AC: VI = 23V, IL = 5mA
Symbol Parameter Conditions Notes Min Max Unit Sub-
groups
RR Ripple Rejection ƒ = 120Hz, IL = 350mA,
eI = 1VRMS
60 dB 4
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test
conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (package
junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax - TA)/
θJA or the number given in the Absolute Maximum Ratings, whichever is lower.
Note 3: Human body model, 100pF discharged through 1.5K
Note 4: VO is set to 90% VRef
Note 5: VDO = VI − VO when VO is 95% of VRef.
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LM140QML
Revision History Section
Released Revision Section Originator Changes
02/21/06 A New Release, Corporate format L. Lytle 6 MDS data sheets converted into one Corp.
data sheet format. The drift tables were
eliminated from the 883 section since it did not
apply. MDS data sheets MNLM140-05H Rev
0B0, MNLM140-05-K Rev. 0C0,
MNLM140-12H Rev 0A0, MNLM140-12K Rev
0B0, MNLM140-15H Rev 0A0, and
MNLM140-15K Rev 0B0 will be archived.
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LM140QML
Physical Dimensions inches (millimeters) unless otherwise noted
Metal Can TO-39 (H)
NS Package Number H03A
Steel Metal Can Package (K)
NS Package Number K02C
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LM140QML
Notes
11 www.national.com
LM140QML
Notes
LM140QML Three Terminal Positive Regulators
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