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Diodes LM4041 User Manual

Lm4041, Precision micropower shunt voltage references, Description

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LM4041

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES

LM4041

Document number:

DS32020 Rev. 8 - 2

1 of 7

www.diodes.com

September 2011

© Diodes Incorporated

Description

The LM4041 is a bandgap circuit designed to achieve a

precision micro-power voltage reference of 1.225 V. The

device is available in the small outline SOT23 and

SC70-5

surface mount packages which are ideal for applications

where space saving is important.

Both packages are available to 0.5% C grade and 1%

D grade for precision applications.

Excellent performance is

maintained over the 60µA to 12mA operating current range

with a typical temperature coefficient of only 20ppm/°C. The

device has been designed to be highly tolerant of capacitive

loads so maintaining excellent stability.

This device offers a pin for pin compatible alternative to the

LM4041 voltage reference in both adjustable and 1.225V

output variants.

Features

• Small

packages: SOT23, SC70-5

No output capacitor required

• Output voltage tolerance
• LM4041C: ±0.5% at 25°C
• LM4041D: ±1% at 25°C
• Low output noise: 20µVrms

(10Hz to 10kHz)

• Wide operating current range: 60µA to 12mA
• Extended temperature range: -40°C to +125°C
• Low temperature coefficient : 100ppm/°C (max)
• All parts AEC-Q100 Grade1 qualified

Applications

• Battery powered equipment
• Precision power supplies
• Portable

instrumentation

• Portable

communications

devices

• Notebook and palmtop computers
• Data acquisition systems

Pin Assignments

LM4041_F (SOT23)






Pin 3 must left floating or connected to pin 2.


LM4041_ADJF….(SOT23)








LM4041_H5 (SC70-5)






Pin 2 must be left floating or connected to pin 1


LM4041_ADJH5 (SC70-5)

















3 N/C

CATHODE 1

ANODE

2

3 ANODE

REF 1

CATHODE

2

5 N/C

ANODE 1

CATHODE

3

N/C 2

4 N/C

5 REF

4 N/C

N/C 1

ANODE 2

CATHODE 3