LM4050, LM4051 50ppm/°C Precision Micropower Shunt Voltage References with Multiple Reverse Breakdown Voltages

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The LM4050/LM4051 are precision two-terminal, shuntmode, 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 subminiature 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.

Key Features

Applications/Uses

	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 28µV_RMS 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

	Cell Phones
	Industrial Process Controls
	Notebook Computers
	Portable Battery-Powered Equipment

Key Specifications: Voltage References

Part Number

Output Voltage (V)

Tempco (max) (ppm/°C)

Initial Accuracy (% max @ +25°C)

Reverse Breakdown Current (min) (µA)

Reverse Breakdown Current (max) (mA)

Features

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

LM4050A

2.048
2.5
3.0
3.3
4.096
5.0

0.1

•

Shunt

Yes

SC-70/3
SOT-23/3

-40 to +125

$1.25 @ 1k

LM4050B

2.048
2.5
3.0
3.3
4.096
5.0

0.2

$0.82 @ 1k

LM4050C

2.048
2.5
3.0
3.3
4.096
5.0

0.5

$0.73 @ 1k

LM4051A

1.25

0.1

$1.25 @ 1k

LM4051B

1.25

0.2

$0.82 @ 1k

LM4051C

1.25

0.5

$0.73 @ 1k

See All Voltage References (159)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.