Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - voltage reference Series Adjustable SOT 23-3

General Description

The MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/

MAX6045/MAX6050 precision, low-dropout, micropower

voltage references are available in miniature SOT23-3

surface-mount packages. They feature a proprietary

curvature-correction circuit and laser-trimmed thin-film

resistors that result in a low temperature coefficient of

<15ppm/°C and initial accuracy of better than 0.2%.

These devices are specified over the extended temper-

ature range.

These series-mode voltage references draw only 27µA

of quiescent supply current and can sink or source up

to 500µA of load current. Unlike conventional shunt-

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

rent and require an external resistor, devices in the

MAX6012 family offer a supply current that’s virtually

independent of supply voltage (with only a 0.8µA/V vari-

ation with supply voltage) and do not require an external

resistor. Additionally, these internally compensated

devices do not require an external compensation

capacitor and are stable with up to 2.2nF of load capac-

itance. Eliminating the external compensation capacitor

saves valuable board area in space-critical applications.

Their low dropout voltage and supply-independent,

ultra-low supply current make these devices ideal for

battery-operated, low-voltage systems.

Applications

Hand-Held Equipment

Data Acquisition Systems

Industrial and Process-Control Systems

Battery-Operated Equipment

Hard-Disk Drives

Features

♦ 0.2% (max) Initial Accuracy

♦ 15ppm/°C (max) Temperature Coefficient

♦ 35µA (max) Quiescent Supply Current

♦ 0.8µA/V Supply Current Variation with V

♦ ±500µA Output Source and Sink Current

♦ 100mV Dropout at 500µA Load Current

♦ 0.12µV/µA Load Regulation

♦ 8µV/V Line Regulation

♦ Stable with C

LOAD

= 0 to 2.2nF

MAX6012/6021/6025/6030/6041/6045/6050

Precision, Low-Power, Low-Dropout,

SOT23-3 Voltage References

________________________________________________________________ Maxim Integrated Products 1

+SUPPLY INPUT (SEE SELECTOR GUIDE)

OUT REFERENCE

OUT

2.2nF MAX*

*CAPACITORS ARE OPTIONAL

GND

MAX6012

MAX6021

MAX6025

MAX6030

MAX6041

MAX6045

MAX6050

Typical Operating Circuit

19-4777; Rev 3; 4/01

PART

MAX6012AEUR-T

MAX6012BEUR-T

MAX6021AEUR-T

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

3 SOT23-3

Ordering Information

TOP

MARK

FZAP

FZDA

FZAU

MAX6021BEUR-T

MAX6025AEUR-T

MAX6025BEUR-T -40°C to +85°C

-40°C to +85°C

-40°C to +85°C 3 SOT23-3

3 SOT23-3

FZDF

FZAQ

FZDB

MAX6041AEUR-T

MAX6041BEUR-T -40°C to +85°C

-40°C to +85°C 3 SOT23-3

3 SOT23-3

FZAR

FZDC

Pin Configuration appears at end of data sheet.

OUT

+ 200mV) to 12.65.000MAX6050

OUT

+ 200mV) to 12.64.500

OUT

+ 200mV) to 12.64.096MAX6041

MAX6045

OUT

+ 200mV) to 12.62.500MAX6025

2.5 to 12.62.048

2.5 to 12.61.247MAX6012

MAX6021

INPUT VOLTAGE (V)

OUTPUT

VOLTAGE (V)

PART

Selector Guide

MAX6045AEUR-T

-40°C to +85°C 3 SOT23-3 FZAS

MAX6045BEUR-T -40°C to +85°C 3 SOT23-3 FZDD

MAX6050AEUR-T

-40°C to +85°C 3 SOT23-3 FZAT

MAX6050BEUR-T -40°C to +85°C 3 SOT23-3 FZDE

MAX6030AEUR-T

-40°C to +85°C 3 SOT23-3 FZDW

MAX6030BEUR-T -40°C to +85°C 3 SOT23-3 FZDX

OUT

+ 200mV) to 12.63.000MAX6030

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Summary of content (14 pages)

PAGE 1
9-4777; Rev 3; 4/01 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References Features ♦ 0.2% (max) Initial Accuracy These series-mode voltage references draw only 27µA of quiescent supply current and can sink or source up to 500µA of load current. Unlike conventional shuntmode (two-terminal) references that waste supply current and require an external resistor, devices in the MAX6012 family offer a supply current that’s virtually independent of supply voltage (with only a 0.
PAGE 2
MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ABSOLUTE MAXIMUM RATINGS Continuous Power Dissipation (TA = +70°C) 3-Pin SOT23-3 (derate 4.0mW/°C above +70°C) ........320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C (Voltages Referenced to GND) IN ......................................
PAGE 3
Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References (VIN = +5V, 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 2.043 2.048 2.053 V 0.24 % 2.048 2.056 V 0.39 % OUTPUT MAX6021A Output Voltage VOUT TA = +25°C MAX6021B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) VOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT OUT Short-Circuit Current ISC -0.
PAGE 4
MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ELECTRICAL CHARACTERISTICS—MAX6025 (VIN = +5V, 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 2.495 2.500 2.505 V 0.20 % 2.500 2.510 V 0.
PAGE 5
Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References (VIN = +5V, 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 2.994 3.000 3.006 V 0.20 % 3.000 3.012 V 0.
PAGE 6
MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ELECTRICAL CHARACTERISTICS—MAX6041 (VIN = +5V, 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 4.088 4.096 4.104 V 0.20 % 4.096 4.112 V 0.
PAGE 7
Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References (VIN = +5V, 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 4.491 4.500 4.509 V 0.
PAGE 8
MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ELECTRICAL CHARACTERISTICS—MAX6050 (VIN = +5.5V, 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 4.990 5.000 5.010 V 0.
PAGE 9
Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6050 OUTPUT VOLTAGE TEMPERATURE DRIFT 5.002 OUTPUT VOLTAGE (V) 1.2490 4.996 4.994 1.2485 4.992 1.2480 4.990 -20 0 20 40 60 80 THREE TYPICAL PARTS 4.988 4.986 -40 100 TEMPERATURE DRIFT (°C) 0 TA = +85°C 200 TA = -40°C 100 0 TA = +25°C 20 40 60 80 4.996 100 0 100 200 300 400 500 600 700 800 900 1000 TEMPERATURE DRIFT (°C) TIME (h) MAX6050 LINE REGULATION MAX6025/MAX6030 DROPOUT VOLTAGE vs.
PAGE 10
Typical Operating Characteristics (continued) (VIN = +5V for MAX6012/21/25/30/41/45, VIN = +5.5V for MAX6050; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6) PSR (mV/V) PSR (mV/V) 10 1 1 0.1 0.1 0.01 0.01 40 VALID OVER SPECIFIED VIN (MIN) TO VIN (MAX) FOR EACH PART 38 36 SUPPLY CURRENT (µA) VCC = 5.5V ±0.25V 10 SUPPLY CURRENT vs. INPUT VOLTAGE MAX16012-11 100 MAX6012-10 100 MAX6050 POWER-SUPPLY REJECTION vs. FREQUENCY MAX6012-12 MAX6012 POWER-SUPPLY REJECTION vs.
PAGE 11
Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6012 LOAD-TRANSIENT RESPONSE MAX6050 LOAD-TRANSIENT RESPONSE MAX6050 TURN-ON TRANSIENT +25µA IOUT 40µA/div -25µA IOUT 50µA/div VIN 2V/div VOUT 50mV/div VOUT 20mV/div 10µs/div IOUT = ±25µA, AC-COUPLED MAX6012-21 MAX6012-20 MAX6012-19 VOUT 2V/div 10µs/div 20µs/div VIN = 5.
PAGE 12
MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References Pin Description PIN NAME FUNCTION 1 IN 2 OUT Supply Voltage Input Reference Voltage Output 3 GND Ground Detailed Description The MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/ MAX6045/MAX6050 precision bandgap references use a proprietary curvature-correction circuit and lasertrimmed thin-film resistors, resulting in a low temperature coefficient of <20ppm/°C and initial accuracy of better than 0.2%.
PAGE 13
Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References Positive and Negative Low-Power Voltage Reference Figure 1 shows a typical method for developing a bipolar reference. The circuit uses a MAX681 voltage doubler/inverter charge-pump converter to power an ICL7652, thus creating a positive as well as a negative reference voltage.
PAGE 14
Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References SOTPO3L.EPS MAX6012/6021/6025/6030/6041/6045/6050 Package Information Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.