General Description

The MAX6018 is a precision, low-voltage, low-dropout,

micropower voltage reference in a SOT23 package. This

three-terminal reference operates with an input voltage

put voltage options of 1.2V, 1.6V, 1.8V, and 2.048V

The MAX6018 voltage reference consumes less than

5µA (max) of supply current and can source and sink

up to 1mA of load current. Unlike conventional shunt-

mode (two-terminal) references that waste supply cur-

rent and require an external resistor, devices in the

MAX6018 family offer a supply current that is virtually

independent of supply voltage (with only 0.1µA/V varia-

tion with supply voltage) and do not require an external

resistor. The MAX6018 has initial accuracies of 0.2% (A

grade) and 0.4% (B grade) and temperature drift of

50ppm/°C (max). The low-dropout voltage and the

ultra-low, supply voltage-independent supply current

make this device ideal for two-cell alkaline, end-of-life,

battery-monitoring systems. The MAX6018 is available

in a tiny 3-pin SOT23 package.

Applications

Two-Cell, Battery-Operated Systems

Battery-Operated Equipment

Hand-Held Equipment

Data-Acquisition Systems

Industrial and Process-Control Systems

Features

o Ultra-Low Supply Current: 5µA (max)

o 1.6V Output from 1.8V Input

o Ultra-Small, 3-Pin SOT23 Package

o Initial Accuracy: ±0.2% (max)

o Low Temperature Drift: 50ppm/°C (max)

o 200mV Dropout Voltage

o Load Regulation (1mA Source): 700µV/mA (max)

(max)

o Four Output Voltage Options: 1.2V, 1.6V,

1.8V, 2.048V

Precision, Micropower, 1.8V Supply,

Low-Dropout, SOT23 Voltage Reference

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

*

IN

OUT

REFERENCE

OUT

GND

MAX6018

*OPTIONAL

1

µF, MAX*

Typical Application Circuit

19-2211; Rev 2; 12/02

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.

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX6018AEUR12-T -40°C to +85°C

3 SOT23-3

FZJH

MAX6018BEUR12-T -40°C to +85°C

3 SOT23-3

FZJI

MAX6018AEUR16-T -40°C to +85°C

3 SOT23-3

FZJJ

MAX6018BEUR16-T -40°C to +85°C

3 SOT23-3

FZJK

MAX6018AEUR18-T -40°C to +85°C

3 SOT23-3

FZJL

MAX6018BEUR18-T -40°C to +85°C

3 SOT23-3

FZJM

MAX6018AEUR21-T -40°C to +85°C

3 SOT23-3

FZJN

MAX6018BEUR21-T -40°C to +85°C

3 SOT23-3

FZJO

Selector Guide

PART

OUTPUT

VOLTAGE (V)

INITIAL

ACCURACY (%)

MAX6018AEUR12

1.263

±0.2

MAX6018BEUR12

1.263

±0.4

MAX6018AEUR16

1.600

±0.2

MAX6018BEUR16

1.600

±0.4

MAX6018AEUR18

1.800

±0.2

MAX6018BEUR18

1.800

±0.4

MAX6018AEUR21

2.048

±0.2

MAX6018BEUR21

2.048

±0.4

OUT

1

3

GND

IN

MAX6018

SOT23

TOP VIEW

2

Pin Configuration