LM4050AEM3-3.0 데이터 시트보기 (PDF) - Maxim Integrated

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LM4050AEM3-3.0

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

Maxim Integrated 

19-2563; Rev 3; 3/06

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-criti-

cal 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 ver-

sions 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 accu-

racy 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 break-

down 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

Typical Operating Circuit

VS

ISHUNT + ILOAD

RS

ILOAD

VR

ISHUNT

LM4050/LM4051

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

Selector Guide

PART

PIN-

OUTPUT PACKAGE

PACKAGE VOLTAGE (V) CODE

LM4050_EM3-2.1 3 SOT 23-3

2.048

U3-1

LM4050_EX3-2.1 3 SC70-3

2.048

X3-2

LM4050_EM3-2.5 3 SOT 23-3

2.500

U3-1

LM4050_EX3-2.5 3 SC70-3

2.500

X3-2

LM4050_ EM3-3.0 3 SOT 23-3

3.000

U3-1

LM4050_EX3-3.0 3 SC70-3

3.000

X3-2

LM4050_EX3-3.3 3 SC70-3

3.300

X3-2

LM4050_EM3-4.1 3 SOT 23-3

4.096

U3-1

LM4050_EX3-4.1 3 SC70-3

4.096

X3-2

LM4050_EM3-5.0 3 SOT 23-3

5.000

U3-1

LM4050_EX3-5.0 3 SC70-3

5.000

X3-2

LM4051_EM3-1.2 3 SOT 23-3

1.225

U3-1

LM4051_EX3-1.2 3 SC70-3

1.225

X3-2

Note: All devices are specified over the -40°C to +125°C oper-

ating temperature range.

Ordering Information appears at end of data sheet.

Pin Configuration

TOP VIEW

+1

LM4050/ 3 N.C.*

LM4051

-2

SC70-3/SOT23-3

*PIN 3 MUST BE LEFT FLOATING

OR CONNECTED TO PIN 2.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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