LM4041
Precision Micropower Shunt Voltage Reference
LM4041 Precision Micropower Shunt Voltage Reference
January 2001
General Description
Ideal for space critical applications, the LM4041 precision
voltage reference is available in the sub-miniature SC70 and
SOT-23 surface-mount packages. The LM4041’s advanced
design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus
making the LM4041 easy to use. Further reducing design
effort is the availability of a fixed (1.225V) and adjustable
reverse breakdown voltage. The minimum operating current
is 60 µA for the LM4041-1.2 and the LM4041-ADJ. Both
versions have a maximum operating current of 12 mA.
The LM4041 utilizes fuse and zener-zap reverse breakdown
or reference voltage trim during wafer sort to ensure that the
prime parts have an accuracy of better than
(A grade) at 25˚C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable
reverse breakdown voltage accuracy over a wide range of
operating temperatures and currents.
±
0.1%
Features
n Small packages: SOT-23, TO-92, and SC70
n No output capacitor required
n Tolerates capacitive loads
n Reverse breakdown voltage options of 1.225V and
adjustable
Key Specifications (LM4041-1.2)
j
Output voltage tolerance
±
(A grade, 25˚C)
j
Low output noise
(10 Hz to 10kHz)20µV
j
Wide operating current range60µA to 12mA
j
Industrial temperature range−40˚C to +85˚C
j
Extended temperature range−40˚C to +125˚C
j
Low temperature coefficient100 ppm/˚C (max)
0.1%(max)
Applications
n Portable, Battery-Powered Equipment
n Data Acquisition Systems
n Instrumentation
n Process Control
n Energy Management
n Automotive
n Precision Audio Components
rms
Connection Diagrams
SOT-23
DS011392-1
*This pin must be left floating or connected to pin 2.
DS011392-40
Top View
See NS Package Number MF03A
(JEDEC Registration TO-236AB)
SC-70
DS011392-46
*This pin must be left floating or connected to pin 1.
Third Field:
RACA–E = Initial Reverse Breakdown
RADVoltage or Reference Voltage Tolerance
±
A=
0.1%, B =±0.2%, C =±0.5%, D =±1.0%, E =±2.0%
www.national.com2
LM4041
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National SemiconductorSalesOffice/
Distributors for availability and specifications.
Reverse Current20 mA
Forward Current10 mA
Soldering (10 seconds)+260˚C
ESD Susceptibility
Human Body Model (Note 3)2 kV
Machine Model (Note 3)200V
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Maximum Output Voltage
(LM4041-ADJ)15V
Power Dissipation (T
= 25˚C) (Note 2)
A
M3 Package306 mW
Z Package550 mW
M7 Package241mW
Storage Temperature−65˚C to +150˚C
Lead Temperature
M3 Packages
Vapor phase (60 seconds)+215˚C
Infrared (15 seconds)+220˚C
Operating Ratings(Notes 1, 2)
Temperature Range(T
Industrial Temperature Range−40˚C ≤ T
Extended Temperature Range−40˚C ≤ T
Reverse Current
LM4041-1.260 µA to 12 mA
LM4041-ADJ60 µA to 12 mA
Output Voltage Range
LM4041-ADJ1.24V to 10V
Z Package
LM4041-1.2
Electrical Characteristics (Industrial Temperature Range)