1 Features

• No output capacitor required

• Tolerates capacitive loads

• Reverse breakdown voltage options of 1.225V and

adjustable

• Key specifications:

– Output voltage tolerance (A Grade, 25 ̊C) ±

0.1% (maximum)

– Output noise (10Hz to 10kHz) 20μVrms

– Operating current range: 60μA to 12mA

– Industrial temp. range: −40 ̊C to +85 ̊C

– Extended temp. range: −40 ̊C to +125 ̊C

– Temperature coefficient: 50ppm/ ̊C (maximum)

2 Applications

• Battery-Powered Equipment

• Data-Acquisition Systems

• Instrumentation and Test Equipment

• Process Control

• Energy Management/Metering

• Automotive Electronics

• Precision Audio

• Base Stations

• Battery Chargers

• Medical Equipment

• Communication

3 Description

Designed for space critical applications, the LM4051-

N precision voltage reference is available in the

sub-miniature (3mm x 1.30mm) SOT-23 surface

mount package. The LM4051-N’s advanced design

eliminates the need for an external stabilizing

capacitor while maintaining stability with any

capacitive load, thus making the LM4051-N 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 60μA for

the LM4051-1.2 and the LM4051-ADJ. Both versions

have a maximum operating current of 12mA.

The LM4051-N comes in three grades (A, B, and C).

The best grade devices (A) have an initial accuracy of

0.1%, while the B-grade have 0.2% and the C-grade

0.5%, all with a tempco of 50 ppm/ ̊C designed for

−40°C to 125̊°C.

The LM4051-N utilizes fuse and zener-zap trim of

reference voltage during wafer sort to ensure that the

prime parts have an accuracy of better than ± 0.1% (A

grade) at 25°C.