Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - voltage reference Series Adjustable SOIC 8 N

General Description

The MAX6035 is a high-voltage, precision micropower

voltage reference. This three-terminal device is available

with output voltage options of 2.5V, 3.0V, and 5.0V. It is an

excellent upgrade for industry-standard devices such as

the REF02 and REF43. The MAX6035 offers 14x lower

power than the REF02 and 5x lower power than the

REF43, as well as a reduced package size from an 8-pin

SO to a 3-pin SOT23. The MAX6035 features a proprietary

temperature coefficient curvature-correction circuit and

laser-trimmed, thin-film resistors that result in a very low

temperature coefficient of 25ppm/°C (max) and an initial

accuracy of ±0.2% (max).

The MAX6035 typically draws only 73µA of supply cur-

rent and can source 10mA or sink 2mA of load current.

Unlike conventional shunt-mode (two-terminal) refer-

ences that waste supply current and require an external

resistor, this device offers a supply current that is virtu-

ally independent of the supply voltage and does not

require an external resistor. Additionally, this internally

compensated device does not require an external com-

pensation capacitor, but is also stable with capacitive

loads up to 5µF. Eliminating the external compensation

capacitor saves valuable board area in space-critical

applications. The supply independent, ultra-low supply

current makes this device ideal for battery-operated,

high-performance systems.

The MAX6035 is available in a 3-pin SOT23 package

and is specified for operation from -40°C to +125°C.

Applications

Features

♦ Wide Supply Voltage Range: Up to 33V

♦ 25ppm/°C (max) Temperature Coefficient

(-40°C to +85°C)

♦ ±0.2% (max) Initial Accuracy

♦ 95µA (max) Quiescent Supply Current

♦ 10mA Source Current, 2mA Sink Current

♦ No Output Capacitor Required

♦ Stable with Capacitive Loads up to 5µF

MAX6035

High-Supply-Voltage, Precision

Voltage Reference in SOT23

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2606; Rev 3; 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

TEMP RANGE

PIN -

PA C K A G E

TOP

MARK

MAX6035AAUR25-T

-40°C to +125°C 3 SOT23-3

FZMW

MAX6035BAUR25-T

-40°C to +125°C 3 SOT23-3

FZMX

MAX6035ESA25

-40°C to +85°C

8 SO —

MAX6035AAUR30-T

-40°C to +125°C 3 SOT23-3

FZMY

MAX6035BAUR30-T

-40°C to +125°C 3 SOT23-3

FZMZ

MAX6035AAUR50-T

-40°C to +125°C 3 SOT23-3

FZNA

MAX6035BAUR50-T

-40°C to +125°C 3 SOT23-3

FZNB

PART

MAXIMUM

TEMPCO

(ppm/°C)

(

-40°C to +85°C

)

MAXIMUM

INITIAL

ACCURACY

(%)

OUTPUT

VOLTAGE

(V)

MAX6035AAUR25 25 0.20 2.5

MAX6035BAUR25 65 0.50 2.5

MAX6035ESA25 40 0.20 2.5

MAX6035AAUR30 25 0.20 3.0

MAX6035BAUR30 65 0.50 3.0

MAX6035AAUR50 25 0.20 5.0

MAX6035BAUR50 65 0.50 5.0

Selector Guide

OUT

3 GND

MAX6035

SOT23

TOP VIEW

OUT

N.C.GND

N.C.

N.C.IN

N.C.

MAX6035

Pin Configurations

MAX6035

0.1µF*

*CAPACITOR IS OPTIONAL.

REFERENCE

OUT

GND

+SUPPLY INPUT (SEE SELECTOR GUIDE)

Typical Operating Circuit

4mA to 20mA Industrial

Control Loops

Li+ Battery Chargers

12-Bit A/D and D/A

Converters

Digital Multimeters

Portable Data-Acquisition

Systems

Low-Power Test

Equipment

Note: The 3-pin SOT23 package code is U3-1. The 8-pin SO

package code is S8-2.

Summary of content (15 pages)

PAGE 1
9-2606; Rev 3; 11/06 High-Supply-Voltage, Precision Voltage Reference in SOT23 The MAX6035 is a high-voltage, precision micropower voltage reference. This three-terminal device is available with output voltage options of 2.5V, 3.0V, and 5.0V. It is an excellent upgrade for industry-standard devices such as the REF02 and REF43. The MAX6035 offers 14x lower power than the REF02 and 5x lower power than the REF43, as well as a reduced package size from an 8-pin SO to a 3-pin SOT23.
PAGE 2
MAX6035 High-Supply-Voltage, Precision Voltage Reference in SOT23 ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND) IN ............................................................................-0.3V to +36V OUT .............................................................-0.3V to (VIN + 0.3V) OUT Short-Circuit Duration to GND or IN (Note 1).....Continuous Current into Any Pin..........................................................±20mA Continuous Power Dissipation 3-Pin SOT23 (derate 4.
PAGE 3
High-Supply-Voltage, Precision Voltage Reference in SOT23 (VIN = 5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX IOUT = 10µA 1.9 IOUT = 10mA 2.25 Dropout Voltage (Note 7) VIN - VOUT Thermal Hysteresis (Note 5) ∆VOUT/cycle 135 Long-Term Stability ∆VOUT/time 1000hr at +25°C 110 UNITS V ppm ppm/ 1000hr DYNAMIC CHARACTERISTICS Output Noise Voltage en f = 0.
PAGE 4
MAX6035 High-Supply-Voltage, Precision Voltage Reference in SOT23 ELECTRICAL CHARACTERISTICS—MAX6035_AUR30 (3.0V) (continued) (VIN = 5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL OUT Short-Circuit Current ISC Dropout Voltage (Note 7) VIN - VOUT CONDITIONS MIN TYP Short to GND 27 Short to IN -4 TA = 0°C to +125°C IOUT = 10µA TA = -40°C to +125°C MAX UNITS mA 1.75 IOUT = 10µA 1.9 IOUT = 10mA 2.
PAGE 5
High-Supply-Voltage, Precision Voltage Reference in SOT23 MAX6035 ELECTRICAL CHARACTERISTICS—MAX6035_AUR50 (5.0V) (continued) (VIN = 5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 6
Typical Operating Characteristics (VIN = 5V for MAX6035AAUR25/MAX6035AAUR30, VIN = 15V for MAX6035AAUR50, IOUT = 0, TA = +25°C, unless otherwise noted.) OUTPUT VOLTAGE (V) 2.5015 2.5010 2.5005 2.999 2.997 5.001 5.000 2.995 4.998 2.4995 4.997 -15 10 60 35 110 85 -40 -15 10 35 -40 110 85 60 60 35 110 85 TEMPERATURE (°C) MAX6035 LINE REGULATION (VOUT = 2.5V) MAX6035 LINE REGULATION (VOUT = 3V) MAX6035 LINE REGULATION (VOUT = 5V) TA = +85°C 2.4995 2.4990 TA = +25°C 2.
PAGE 7
High-Supply-Voltage, Precision Voltage Reference in SOT23 -20 -60 -60 -80 -80 -80 -100 -100 -100 -120 0.001 0.1 10 1000 0.1 10 1000 0.001 10 1000 FREQUENCY (kHz) MAX6035 SUPPLY CURRENT vs. INPUT VOLTAGE (VOUT = 2.5V) MAX6035 SUPPLY CURRENT vs. INPUT VOLTAGE (VOUT = 3V) MAX6035 SUPPLY CURRENT vs.
PAGE 8
MAX6035 High-Supply-Voltage, Precision Voltage Reference in SOT23 Typical Operating Characteristics (continued) (VIN = 5V for MAX6035AAUR25/MAX6035AAUR30, VIN = 15V for MAX6035AAUR50, IOUT = 0, TA = +25°C, unless otherwise noted.) MAX6035 toc21 MAX6035 toc20 MAX6035 toc19 20µV/div 10µV/div 10µV/div 1s/div 1s/div 1s/div MAX6035 10Hz to 1kHz OUTPUT NOISE (VOUT = 2.
PAGE 9
High-Supply-Voltage, Precision Voltage Reference in SOT23 MAX6035 LOAD TRANSIENT (VOUT = 3V) MAX6035 LOAD TRANSIENT (VOUT = 2.
PAGE 10
MAX6035 High-Supply-Voltage, Precision Voltage Reference in SOT23 Typical Operating Characteristics (continued) (VIN = 5V for MAX6035AAUR25/MAX6035AAUR30, VIN = 15V for MAX6035AAUR50, IOUT = 0, TA = +25°C, unless otherwise noted.) MAX6035 LOAD TRANSIENT (VOUT = 5V) MAX6035 LOAD TRANSIENT (VOUT = 3V) MAX6035 LOAD TRANSIENT (VOUT = 2.
PAGE 11
High-Supply-Voltage, Precision Voltage Reference in SOT23 MAX6035 LOAD TRANSIENT (VOUT = 2.
PAGE 12
MAX6035 High-Supply-Voltage, Precision Voltage Reference in SOT23 Pin Description PIN NAME FUNCTION SOT23 SO 1 2 IN 2 6 OUT Reference Output 3 4 GND Ground 1, 3, 5, 7, 8 N.C. No Connection. Not internally connected. Input Voltage Applications Information power supply. Additionally, shunt-mode references have to be biased at the maximum expected load current, even if the load current is not present at the time.
PAGE 13
High-Supply-Voltage, Precision Voltage Reference in SOT23 MAX6035 10,000 1000 100 TEMPERATURE COEFFICIENT (ppm/°C) 8 BIT 10 10 BIT 12 BIT 1 14 BIT 16 BIT 0.1 18 BIT 0.01 1 10 OPERATING TEMPERATURE RANGE (TMAX - TMIN) (°C) 20 BIT 100 Figure 3. Temperature Coefficient vs.
PAGE 14
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. SOT23 L.
PAGE 15
High-Supply-Voltage, Precision Voltage Reference in SOT23 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 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.