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LM4051

50ppm/°C Precision Micropower Shunt Voltage References with Multiple Reverse Breakdown Voltages

Maxim Integrated 

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LM4050/LM4051

50ppm/°C Precision Micropower Shunt Voltage

References with Multiple Reverse Breakdown Voltages

General Description

The LM4050/LM4051 are precision two-terminal, shunt-

mode, bandgap voltage references available in fixed

reverse breakdown voltages of 1.225V, 2.048V, 2.500V,

3.000V, 3.3V, 4.096V, and 5.000V. Ideal for space-critical

applications, the LM4050/LM4051 are offered in the sub

miniature 3-pin SC70 surface-mount packages (1.8mm

x 1.8mm), 50% smaller than comparable devices in

SOT23 surface-mount package (SOT23 versions are also

available).

Laser-trimmed resistors ensure excellent initial accuracy.

With a 50ppm/°C temperature coefficient, these devices

are offered in three grades of initial accuracy ranging from

0.1% to 0.5%. The LM4050/LM4051 have a 60µA to 15mA

shunt-current capability with low dynamic impedance,

ensuring stable reverse breakdown voltage accuracy over

a wide range of operating temperatures and currents. The

LM4050/LM4051 do not require an external stabilizing

capacitor while ensuring stability with any capacitive loads.

The LM4050/LM4051 specifications are guaranteed over

the temperature range of -40°C to +125°C.

Applications

●● Portable, Battery-Powered Equipment

●● Notebook Computers

●● Cell Phones

●● Industrial Process Controls

●● Automotive

Pin Configuration

VS

ISHUNT + ILOAD

RS

ILOAD

VR

ISHUNT

LM4050

Features

●● 50ppm/°C (max) Temperature Coefficient Guaranteed

over the -40°C to +125°C Temperature Range

●● Ultra-Small 3-Pin SC70 Package

●● 0.1% (max) Initial Accuracy

●● Wide Operating Current Range: 60µA to 15mA

●● Low 28µVRMS Output Noise (10Hz to 10kHz)

●● 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and

5.000V Fixed Reverse Breakdown Voltages

●● No Output Capacitors Required

●● Tolerates Capacitive Loads

●● AEC-Q100 Qualified, Refer to Ordering Information

for the Specific /V Versions

Pin Configuration

TOP VIEW

+

+1

LM4050

LM4051

-2

3 N.C.*

SC70/SOT23

*PIN 3 MUST BE LEFT UNCONNECTED OR CONNECTED TO PIN 2.

Ordering Information appears at end of data sheet.

19-2563; Rev 15; 7/20

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