LM4130
Precision Micropower Low Dropout Voltage Reference
General Description
The LM4130 family of precision voltage references performs
comparable to the best laser-trimmed bipolar references, but
in cost effective CMOS technology. Key to this break through
is the use of EEPROM registers for correction of curvature,
tempco, and accuracy on a CMOS bandgap architecture that
allows package level programming to overcome assembly
shift. The shifts in voltage accuracy and tempco during as-
sembly of die into plastic packages limit the accuracy of ref-
erences trimmed with laser techniques.
Unlike other LDO references, the LM4130 requires no output
capacitor. Neither is a buffer amplifier required, even with
loads up to 20mA. These advantages and the SOT23 pack-
aging are important for cost-critical and space-critical appli-
cations.
Series references provide lower power consumption than
shunt references, since they don't have to idle the maximum
possible load current under no load conditions. This advan-
tage, the low quiescent current (75A), and the low dropout
voltage(275mV) make the LM4130 ideal for battery-powered
solutions.
The LM4130 is available in five grades (A, B, C, D and E) for
greater flexibility. The best grade devices (A) have an initial
accuracy of 0.05% with guaranteed temperature coefficient
of 10ppm/C or less, while the lowest grade parts (E) have
an initial accuracy of 0.5% and a tempco of 30ppm/C.
Features
n
Small SOT23-5 package
n
High output voltage accuracy
0.05%
n
Low Temperature Coefficient
10 ppm/C
n
Stable with capacitive loads to 100F
n
Low dropout voltage
275 mV
@
10 mA
n
Supply Current
75 A
n
Full accuracy
-40C to 85C
n
Extended operation to 125C
n
Excellent load and line regulation
n
Output current
20 mA
n
Output impedance
<
1
n
Voltage options:
2.048V, 2.500V, and 4.096V
Applications Summary
n
Portable, battery powered equipment
n
Instrumentation and process control
n
Automotive & Industrial
n
Test equipment
n
Data acquisition systems
n
Precision regulators
n
Battery chargers
n
Base stations
n
Communications
n
Medical equipment
n
Servo systems
Connection Diagram and Pin Configuration
DS101046-1
*
Optional, Recommended for improved transient response and
input noise reduction.
(See Application Information)
DS101046-2
Refer to the Ordering Information Table in this Data Sheet for Specific Part
Number
SOT23-5 Surface Mount Package
November 1999
LM4130
Precision
Micropower
Low
Dropout
V
oltage
Reference
1999 National Semiconductor Corporation
DS101046
www.national.com
Ordering Information
Industrial Temperature Range (-40C to + 85C)
Initial Output Voltage Accuracy at 25C
And Temperature Coefficient
LM4130 Supplied as
1000 Units, Tape and
Reel
LM4130 Supplied as
3000 Units, Tape and
Reel
Part Marking
0.05%, 10 ppm/C max (A grade)
LM4130AIM5-2.0
LM4130AIM5X-2.0
R02A
LM4130AIM5-2.5
LM4130AIM5X-2.5
R03A
LM4130AIM5-4.1
LM4130AIM5X-4.1
R04A
0.2%, 10 ppm/C max (B grade)
LM4130BIM5-2.0
LM4130BIM5X-2.0
R02B
LM4130BIM5-2.5
LM4130BIM5X-2.5
R03B
LM4130BIM5-4.1
LM4130BIM5X-4.1
R04B
0.1%, 20 ppm/C max (C grade)
LM4130CIM5-2.0
LM4130CIM5X-2.0
R02C
LM4130CIM5-2.5
LM4130CIM5X-2.5
R03C
LM4130CIM5-4.1
LM4130CIM5X-4.1
R04C
0.4%, 20 ppm/C max (D grade)
LM4130DIM5-2.0
LM4130DIM5X-2.0
R02D
LM4130DIM5-2.5
LM4130DIM5X-2.5
R03D
LM4130DIM5-4.1
LM4130DIM5X-4.1
R04D
0.5%, 30 ppm/C max (E grade)
LM4130EIM5-2.0
LM4130EIM5X-2.0
R02E
LM4130EIM5-2.5
LM4130EIM5X-2.5
R03E
LM4130EIM5-4.1
LM4130EIM5X-4.1
R04E
SOT23-5 Package Marking Information
Only four fields of marking are possible on the SOT23-5's small surface. This
table gives the meaning of the four fields.
Field Information
First Field:
R = Reference
Second and Third Field:
02 = 2.048V Voltage Option
03 = 2.50V Voltage Option
04 = 4.096V Voltage Option
Fourth Field:
A-E = Initial Reference Voltage Tolerance and Temperature Coefficient
A =
0.05%, 10ppm/C
B =
0.2%, 10ppm/C
C =
0.1%, 20ppm/C
D =
0.4%, 20ppm/C
E =
0.5%, 30ppm/C
LM4130
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2
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Maximum Voltage on any Input
-0.3V to 6V
Output Short-Circuit Duration
Indefinite
Power Dissipation (T
A
= 25C)
350 mW
(Note 2)
ESD Susceptibility (Note 3)
Human Body Model
2 kV
Machine Model
200V
Lead Temperature:
Soldering, (10 sec.)
+260C
Vapor Phase (60 sec.)
+215C
Infrared (15 sec.)
+220C
Operating Range
(Note 1)
Storage Temperature Range
-65C to +150C
Operating Temperature
Range
-40C to +85C
LM4130-2.048
Electrical Characteristics
Unless otherwise specified V
CC
= 5V, I
LOAD
= 0, T
A
= 25C. Limits with standard typeface are for T
A
= 25C, and limits in bold-
face type apply over the operating temperature range.
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 4)
Max
(Note 5)
Units
V
REF
Output Voltage Initial
Accuracy
LM4130A-2.048
LM4130B-2.048
LM4130C-2.048
LM4130D-2.048
LM4130E-2.048
0.05
0.2
0.1
0.4
0.5
%
TCV
REF
/C
(Note 6)
Temperature Coefficient
ppm/C
LM4130A, B
0C
T
A
+85C
-40C
T
A
+85C
10
20
LM4130C, D
20
LM4130E
30
V
REF
/
V
IN
Line Regulation
I
LOAD
= 100A
ppm/V
V
REF
+ 300 mV
V
IN
5.5V
75
200
V
REF
+ 400 mV
V
IN
5.5V
350
V
REF
/
I
LOAD
Load Regulation
0 mA
I
LOAD
20 mA
32
60
80
ppm/mA
V
REF
Long-Term Stability
(Note 7)
1000 Hrs
50
ppm
Thermal Hysteresis
(Note 8)
-40C
T
A
+125C
50
V
IN
- V
REF
Dropout Voltage
(Note 9)
I
LOAD
= 10 mA
275
400
mV
V
N
Output Noise Voltage
0.1 Hz to 10 Hz
125
V
PP
I
S
Supply Current
50
75
90
A
I
SC
Short Circuit Current
30
60
mA
65
mA
LM4130
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3
LM4130-2.500
Electrical Characteristics
Unless otherwise specified V
CC
= 5V, I
LOAD
= 0 T
A
= 25C. Limits with standard typeface are for T
A
= 25C, and limits in bold-
face type apply over the operating temperature range.
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 4)
Max
(Note 5)
Units
V
REF
Output Voltage Initial
Accuracy
LM4130A-2.500
LM4130B-2.500
LM4130C-2.500
LM4130D-2.500
LM4130E-2.500
0.05
0.2
0.1
0.4
0.5
%
TCV
REF
/C
(Note 6)
Temperature Coefficient
ppm/C
LM4130A, B
0C
T
A
+85C
-40C
T
A
+85C
10
20
LM4130C, D
20
LM4130E
30
V
REF
/
V
IN
Line Regulation
I
LOAD
= 100A
ppm/V
V
REF
+ 200 mV
V
IN
5.5V
30
100
V
REF
+ 400 mV
V
IN
5.5V
150
V
REF
/
I
LOAD
Load Regulation
0 mA
I
LOAD
20 mA
25
60
80
ppm/mA
V
REF
Long-Term Stability
(Note 7)
1000 Hrs
50
ppm
Thermal Hysteresis
(Note 8)
-40C
T
A
+125C
50
V
IN
- V
REF
Dropout Voltage
(Note 9)
I
LOAD
= 10 mA
275
400
mV
V
N
Output Noise Voltage
0.1 Hz to 10 Hz
150
V
PP
I
S
Supply Current
50
75
90
A
I
SC
Short Circuit Current
30
60
mA
65
mA
LM4130
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4
LM4130-4.096
Electrical Characteristics
Unless otherwise specified V
CC
= 5.0V, I
LOAD
= 0 T
A
= 25C. Limits with standard typeface are for T
A
= 25C, and limits in
boldface type apply over the operating temperature range.
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 4)
Max
(Note 5)
Units
V
REF
Output Voltage Initial
Accuracy
LM4130-4.096A
LM4130-4.096B
LM4130-4.096C
LM4130-4.096D
LM4130-4.096E
0.05
0.2
0.1
0.4
0.5
%
TCV
REF
/C
(Note 6)
Temperature Coefficient
ppm/C
LM4130A, B
0C
T
A
+85C
-40C
T
A
+85C
10
20
LM4130C, D
20
LM4130E
30
V
REF
/
V
IN
Line Regulation
I
LOAD
= 100A
ppm/V
V
REF
+ 500 mV
V
IN
5.5V
75
250
400
V
REF
/
I
LOAD
Load Regulation
0 mA
I
LOAD
20 mA
16
60
80
ppm/mA
V
REF
Long-Term Stability
(Note 7)
1000 Hrs
50
ppm
Thermal Hysteresis
(Note 8)
-40C
T
A
+125C
50
V
IN
- V
REF
Dropout Voltage
(Note 9)
I
LOAD
= 10 mA
275
500
mV
V
N
Output Noise Voltage
0.1 Hz to 10 Hz
245
V
PP
I
S
Supply Current
50
75
90
A
I
SC
Short Circuit Current
30
60
mA
65
mA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The guar-
anteed 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: Without PCB copper enhancements. The maximum power dissipation must be de-rated at elevated temperatures and is limited by T
JMAX
(maximum junction
temperature),
J-A
(junction to ambient thermal resistance) and T
A
(ambient temperature). The maximum power dissipation at any temperature is: PDiss
MAX
= (T
JMAX
- T
A
)/
J-A
up to the value listed in the Absolute Maximum Ratings.
J-A
for SOT23-5 package is 220C/W, T
JMAX
= 125C.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. The machine model is a 200 pF capacitor discharged di-
rectly into each pin.
Note 4: Typical numbers are at 25C and represent the most likely parametric norm.
Note 5: Limits are 100% production tested at 25C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National's Average Outgoing Quality Level (AOQL).
Note 6: Temperature coefficient is measured by the
Box
method; i.e., the maximum
V
REF
is divided by the maximum
T.
Note 7: Long term stability is V
REF
@
25C measured during 1000 hrs.
Note 8: Thermal hysteresis is defined as the change in +25C output voltage before and after cycling the device from -40C to 125C.
Note 9: Dropout voltage is defined as the minimum input to output differential at which the output voltage drops by 0.5% below the value measured with a 5V input.
LM4130
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5
LM4130 Typical Performance Characteristics
T
A
= 25C, No Load, V
IN
= 5.0V, unless other-
wise noted.
Temperature Drift Characteristics
DS101046-44
Load Regulation vs Temperature
DS101046-36
Line Regulation vs Load
DS101046-17
Line Regulation vs Temperature
DS101046-31
LM4130
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6
LM4130 Typical Performance Characteristics
T
A
= 25C, No Load, V
IN
= 5.0V, unless
otherwise noted. (Continued)
Output Voltage vs Load Current
DS101046-21
Dropout vs Load (V
REF
= 2.5)
DS101046-42
Supply Current vs Temperature
DS101046-29
Short Circuit Current vs Temperature
DS101046-28
LM4130
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7
LM4130 Typical Performance Characteristics
T
A
= 25C, No Load, V
IN
= 5.0V, unless
otherwise noted. (Continued)
Power-Up Response (2.048V)
DS101046-40
Power-Up Response (4.096V)
DS101046-34
Output Impedance
DS101046-23
Power Supply Rejection Ratio
DS101046-22
LM4130
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8
LM4130 Typical Performance Characteristics
T
A
= 25C, No Load, V
IN
= 5.0V, unless
otherwise noted. (Continued)
Load Transient Response
DS101046-25
Line Transient Response
DS101046-26
0.1Hz to 10 Hz Noise (V
REF
= 2.5V)
DS101046-27
Output Noise Spectra
DS101046-43
LM4130
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9
Pin Functions
V
REF
(Pin 5): Reference Output. The output of the LM4130
can source up to 20 mA. It is stable with output capacitor
ranges from 0 to 100 F.
V
IN
(Pin 4):Positive Supply. Bypassing with a 0.1F capaci-
tor is recommended if the output loading changes or input is
noisy.
Ground (Pin 2):Negative Supply or Ground Connection.
NC (Pins 1, 3):No Connection (internally terminated). These
pins must be left unconnected.
Application Information
Output Capacitor
The LM4130 is designed to operate with or without an output
capacitor and is stable with capacitive loads of up to 100F.
Connecting a capacitor between the output and ground will
significantly improve the load transient response when
switching from a light load to a heavy load. However, the out-
put capacitor should not be made arbitrarily large because it
will effect the turn-on time as well as line and load transients.
Input Capacitor
A small 0.1F capacitor on the input significantly improves
stability under a wide range of load conditions. With an input
bypass capacitor, the LM4130 will drive any combination of
resistance and capacitance up to V
REF
/20mA and 100F re-
spectively.
Noise on the power-supply input can effect the output noise,
but it can be reduced by using an optional bypass capacitor
between the input pin and the ground.
Printed Circuit Board Layout Consideration
References in SOT packages are generally less prone to as-
sembly stress than devices in Small Outline (SOIC) pack-
age.
To minimize the mechanical stress due to PC board mount-
ing that can cause the output voltage to shift from its initial
value, mount the reference on a low flex area of the PC
board, such as near the edge or a corner.
Typical Application Circuits
Precision High Current Low Droput Regulator
DS101046-4
Voltage Reference with Complimentary Output
DS101046-6
Precision High Current Low Droput Regulator
DS101046-7
Precision Voltage Reference
with Force and Sense Output
DS101046-9
Programmable Current Source
DS101046-10
LM4130
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10
Typical Application Circuits
(Continued)
Precision Regulator with Current Limiting Circuit
DS101046-11
Low Cost Higher Output
Current Circuit
DS101046-12
*
Select R
1
to deliver 80% of typical load current. The LM4130 then will
source as necessary, up to 20mA, to maintain the output regulation. Care
must be taken not to remove the load as the output will be driven to the
rail. This approach will effect line regulation.
Supply Splitter
DS101046-13
LM4130
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11
Physical Dimensions
inches (millimeters) unless otherwise noted
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
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Email: support@nsc.com
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www.national.com
LM4130
Precision
Micropower
Low
Dropout
V
oltage
Reference
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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