Datasheet

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General Description

The MAX6029 micropower, low-dropout bandgap volt-

age reference combines ultra-low supply current and

low drift in a miniature 5-pin SOT23 surface-mount pack-

age that uses 70% less board space than comparable

devices in an SO package. An initial accuracy of 0.15%

and a 30ppm/°C (max) temperature coefficient make the

MAX6029 suitable for precision applications. This

series-mode voltage reference sources up to 4mA and

sinks up to 1mA of load current. A wide 2.5V to 12.6V

supply range, ultra-low 5.25µA (max) supply current,

and a low 200mV dropout voltage make these devices

ideal for battery-operated systems. Additionally, an

internal compensation capacitor eliminates the need for

an external compensation capacitor and ensures stabili-

ty with load capacitances up to 10µF.

The MAX6029 provides six output voltages of 2.048V,

2.5V, 3V, 3.3V, 4.096V, and 5V. The MAX6029 is avail-

able in a 5-pin SOT23 or an 8-pin SO package and is

specified over the extended temperature range (-40°C

to +85°C).

Applications

Battery-Powered Systems

Hand-Held Instruments

Precision Power Supplies

A/D and D/A Converters

Features

♦ Ultra-Low 5.25µA (max) Supply Current

♦ ±0.15% (max) Initial Accuracy

♦ 30ppm/°C (max) Temperature Coefficient

♦ 4mA Output Source Current

♦ 1mA Output Sink Current

♦ 2.5V to 12.6V Supply Range

♦ Low 200mV Dropout

♦ Stable with Capacitive Loads Up to 10µF

♦ No External Capacitors Required

♦ Miniature 5-Pin SOT23 Package, 8-Pin SO Package

MAX6029

Ultra-Low-Power Precision Series

Voltage Reference

________________________________________________________________ Maxim Integrated Products 1

GND

N.C.N.C.

15OUTIN

MAX6029

SOT23

TOP VIEW

OUT

N.C.GND

N.C.

N.C.IN

N.C.

MAX6029

Pin Configurations

Ordering Information

19-2892; Rev 2; 11/06

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

PIN-PACKAGE

TOP

MARK

PKG

CODE

MAX6029EUK21-T

5 SOT23-5 AEHD U5-1

MAX6029EUK25-T

5 SOT23-5 AEHF U5-1

MAX6029ESA25 8 SO — S8-2

MAX6029EUK30-T

5 SOT23-5 AEHH U5-1

MAX6029EUK33-T

5 SOT23-5 AEHN U5-1

MAX6029EUK41-T

5 SOT23-5 AEHJ U5-1

MAX6029ESA41 8 SO — S8-2

MAX6029EUK50-T

5 SOT23-5 AEHL U5-1

Selector Guide

PART PIN-PACKAGE

OUTPUT

VOLTAGE (V)

MAX6029EUK21-T 5 SOT23-5 2.048

MAX6029EUK25-T 5 SOT23-5 2.500

MAX6029ESA25 8 SO 2.500

MAX6029EUK30-T 5 SOT23-5 3.000

MAX6029EUK33-T 5 SOT23-5 3.300

MAX6029EUK41-T 5 SOT23-5 4.096

MAX6029ESA41 8 SO 4.096

MAX6029EUK50-T 5 SOT23-5 5.000

Note: All devices are specified over the -40°C to +85°C oper-

ating temperature range.

Summary of content (16 pages)

PAGE 1
9-2892; Rev 2; 11/06 Ultra-Low-Power Precision Series Voltage Reference The MAX6029 micropower, low-dropout bandgap voltage reference combines ultra-low supply current and low drift in a miniature 5-pin SOT23 surface-mount package that uses 70% less board space than comparable devices in an SO package. An initial accuracy of 0.15% and a 30ppm/°C (max) temperature coefficient make the MAX6029 suitable for precision applications.
PAGE 2
MAX6029 Ultra-Low-Power Precision Series Voltage Reference ABSOLUTE MAXIMUM RATINGS IN to GND ...............................................................-0.3V to +13V OUT to GND ..............-0.3V to the lower of +6V and (VIN + 0.3V) Output to GND Short-Circuit Duration........................Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW 8-Pin SO (derate 5.9mW/°C above +70°C)...............470.6mW Operating Temperature Range ..........
PAGE 3
Ultra-Low-Power Precision Series Voltage Reference (VIN = 2.7V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX MAX6029EUK 2.4963 2.5000 2.5038 MAX6029ESA 2.495 2.500 2.
PAGE 4
MAX6029 Ultra-Low-Power Precision Series Voltage Reference ELECTRICAL CHARACTERISTICS—MAX6029_30 (VOUT = 3.000V) (VIN = 3.2V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 2.9955 3.0000 3.
PAGE 5
Ultra-Low-Power Precision Series Voltage Reference (VIN = 3.5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER OUTPUT Output Voltage Output Voltage Temperature Coefficient SYMBOL VOUT TA = +25°C TCVOUT (Notes 2, 3) ∆VOUT/∆VIN Line Regulation ∆VOUT/∆IOUT Load Regulation Dropout Voltage (Note 5) Output Short-Circuit Current VIN - VOUT MIN TYP MAX UNITS 3.2951 3.3000 3.3050 V 30 ppm/°C µV/V VIN = 3.5V to 12.
PAGE 6
MAX6029 Ultra-Low-Power Precision Series Voltage Reference ELECTRICAL CHARACTERISTICS—MAX6029_41 (VOUT = 4.096V) (VIN = 4.3V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 4.0899 4.088 4.0960 4.1021 4.096 4.
PAGE 7
Ultra-Low-Power Precision Series Voltage Reference (VIN = 5.2V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 4.9925 5.0000 5.0075 V 30 ppm/°C 34 375 µV/V 0.3 0.8 3.3 9 OUTPUT Output Voltage Output Voltage Temperature Coefficient VOUT TA = +25°C TCVOUT (Notes 2, 3) ∆VOUT/∆VIN VIN = 5.2V to 12.
PAGE 8
Typical Operating Characteristics (VIN = 2.5V for MAX6029EUK21, VIN = 3.2V for MAX6029EUK30, and VIN = 5.2V for MAX6029EUK50, IOUT = 0, TA = +25°C, unless otherwise noted.) 2.044 5.006 2.999 2.997 2.995 MAX6029 toc03 3 TYPICAL UNITS 3.001 OUTPUT VOLTAGE (V) 2.046 OUTPUT VOLTAGE vs. TEMPERATURE (VOUT = 5V) 3 TYPICAL UNITS 5.004 5.002 OUTPUT VOLTAGE (V) 3 TYPICAL UNITS 2.048 OUTPUT VOLTAGE (V) 3.003 MAX6029 toc01 2.050 OUTPUT VOLTAGE vs. TEMPERATURE (VOUT = 3V) MAX6029 toc02 OUTPUT VOLTAGE vs.
PAGE 9
Ultra-Low-Power Precision Series Voltage Reference LOAD REGULATION (VOUT = 3V) 3.0050 2.04784 2.04782 2.04780 2.04778 3.0040 3.0035 3.0030 3.0025 2.04776 3.0020 2.04774 3.0015 2.04772 5.5 7.0 8.5 10.0 11.5 13.0 -1 0 1 3 4 5 LOAD REGULATION (VOUT = 5V) LINE REGULATION (VOUT = 5V) MAX6029 toc13 5.0030 5.0025 5.0020 3 5.00070 2 3 4 5 6 10 11 12 13 0 -10 -30 -60 5 7 6 7 8 9 10 11 12 13 0.1 INPUT VOLTAGE (V) POWER-SUPPLY REJECTION RATIO vs.
PAGE 10
MAX6029 Ultra-Low-Power Precision Series Voltage Reference Typical Operating Characteristics (continued) (VIN = 2.5V for MAX6029EUK21, VIN = 3.2V for MAX6029EUK30, and VIN = 5.2V for MAX6029EUK50, IOUT = 0, TA = +25°C, unless otherwise noted.) LINE-TRANSIENT RESPONSE (VOUT = 3V) LINE-TRANSIENT RESPONSE (VOUT = 5V) MAX6029 toc19 3.7V MAX61029 toc20 VIN 200mV/div AC-COUPLED 3.2V 5.7V VIN 200mV/div AC-COUPLED 5.
PAGE 11
Ultra-Low-Power Precision Series Voltage Reference LOAD-TRANSIENT RESPONSE (SOURCING, VOUT = 5V) LOAD-TRANSIENT RESPONSE (SINKING, VOUT = 5V) MAX6029 toc25 MAX6029 toc26 COUT = 0 COUT = 0 IOUT 10mA/div 4mA 0 0 IOUT 1mA/div -1mA VOUT 500mV/div AC-COUPLED 5V VOUT 1V/div AC-COUPLED 5V 400µs/div 2ms/div LOAD-TRANSIENT RESPONSE (SOURCING, VOUT = 5V) LOAD-TRANSIENT RESPONSE (SINKING, VOUT = 5V) 6029 toc27 MAX6029 toc28 COUT = 1µF COUT = 1µF IOUT 10mA/div 4mA 0 0 IOUT 1mA/div -1mA VOUT 20
PAGE 12
Typical Operating Characteristics (continued) (VIN = 2.5V for MAX6029EUK21, VIN = 3.2V for MAX6029EUK30, and VIN = 5.2V for MAX6029EUK50, IOUT = 0, TA = +25°C, unless otherwise noted.) 0.1Hz TO 10Hz OUTPUT NOISE (VOUT = 2.048V) TURN-ON TRANSIENT (VOUT = 5V) 0.1Hz TO 10Hz OUTPUT NOISE (VOUT = 3V) MAX6029 toc32 MAX6029 toc31 MAX6029 toc33 5.2V VIN 2V/div VOUT 10µV/div VOUT 10µV/div 0 5V VOUT 2V/div 0 1s/div 400µs/div 1s/div NOISE vs. FREQUENCY (VOUT = 2.048V) 0.
PAGE 13
Ultra-Low-Power Precision Series Voltage Reference PIN NAME FUNCTION SOT23 SO 1 2 IN 2 4 GND Ground 3, 4 1, 3, 5, 7, 8 N.C. No Connection. Leave unconnected or connect to ground. 5 6 OUT Reference Output Positive Voltage Supply Applications Information Input Bypassing The MAX6029 does not require an input bypass capacitor. For improved transient performance, bypass the input to ground with a 0.1µF ceramic capacitor. Place the capacitor as close to IN as possible.
PAGE 14
Ultra-Low-Power Precision Series Voltage Reference MAX6029 Typical Operating Circuit VIN = 2.5V TO 12.6V Chip Information TRANSISTOR COUNT: 30 PROCESS: BiCMOS * IN MAX6029 OUT GND *CAPACITOR IS OPTIONAL.
PAGE 15
Ultra-Low-Power Precision Series Voltage Reference SOT-23 5L .EPS ______________________________________________________________________________________ 15 MAX6029 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.
PAGE 16
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.25 0.19 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .