MAX6018AEUR21+T ,Precision, Micropower, 1.8V Supply, Low-Dropout, SOT23 Voltage ReferenceApplicationsMAX6018BEUR12+T -40°C to +85°C 3 SOT23-3 FZJI● Two-Cell, Battery-Operated SystemsMAX601 ..
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MAX6018AEUR21+T
Precision, Micropower, 1.8V Supply, Low-Dropout, SOT23 Voltage Reference
General DescriptionThe MAX6018 is a precision, low-voltage, low-dropout,
micropower voltage reference in a SOT23 package. This
three-terminal reference operates with an input voltage
from (VOUT + 200mV) to 5.5V, and is available with output
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 current 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 variation 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
Beneits and Features●Ultra-Low Supply Current: 5μA (max)●1.6V Output from 1.8V Input●Ultra-Small, 3-Pin SOT23 Package●Initial Accuracy: ±0.2% (max)●Low Temperature Drift: 50ppm/°C (max)●200mV Dropout Voltage●Load Regulation (1mA Source): 700μV/mA (max)●Line Regulation (VOUT + 200mV) to 5.5V: 250μV/V (max)●Four Output Voltage Options: 1.2V, 1.6V,
1.8V, 2.048V
PARTTEMP RANGEPIN-
PACKAGE
TOP
MARKMAX6018AEUR12+T-40°C to +85°C3 SOT23-3FZJH
MAX6018BEUR12+T-40°C to +85°C3 SOT23-3FZJI
MAX6018AEUR16+T-40°C to +85°C3 SOT23-3FZJJ
MAX6018BEUR16+T-40°C to +85°C3 SOT23-3FZJK
MAX6018AEUR18+T-40°C to +85°C3 SOT23-3FZJL
MAX6018BEUR18+T-40°C to +85°C3 SOT23-3FZJM
MAX6018AEUR21+T-40°C to +85°C3 SOT23-3FZJN
MAX6018BEUR21+T-40°C to +85°C3 SOT23-3FZJO
PARTOUTPUT
VOLTAGE (V)
INITIAL
ACCURACY (%)MAX6018AEUR121.263±0.2
MAX6018BEUR121.263±0.4
MAX6018AEUR161.600±0.2
MAX6018BEUR161.600±0.4
MAX6018AEUR181.800±0.2
MAX6018BEUR181.800±0.4
MAX6018AEUR212.048±0.2
MAX6018BEUR212.048±0.4
VCC
OUT
REFERENCE
OUT
GND
MAX6018*OPTIONAL
1µ, MAX*
OUTGND
IN
MAX6018
SOT23TOP VIEW
MAX6018Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Typical Application Circuit
Pin Coniguration
Ordering Information
Selector Guide
(Voltages Referenced to GND)
VIN ...........................................................................-0.3V to +6VOutput Short-Circuit Duration to GND or VIN ............ContinuousContinuous Power Dissipation (TA = +70°C) 3-Pin SOT23 (derate 4.0mW/°C above +70°C) ..........320mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(VIN = 1.8V; COUT = 47nF, IOUT = 0; TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OUTPUTOutput VoltageVOUTMAX6018A_12 (0.2%)1.26051.26301.2655VMAX6018B_12 (0.4%)1.25801.26301.2681
Output Voltage Temperature DriftTCVOUT(Note 2)1650ppm/°C
Line RegulationΔVOUT/ΔVIN1.8V ≤ VIN ≤ 5.5V50400µV/V
Load RegulationΔVOUT/ΔIOUT
0 ≤ IOUT ≤ 1mA90700µV/mA
-100µA ≤ IOUT ≤ 029µV/µA
Short-Circuit CurrentISCSourcing to GND3mASinking from VIN6
Long-Term StabilityΔVOUT/
Time1000hrs at TA = +25°C100ppm
Thermal Hysteresis(Note 4)130ppm
DYNAMIC CHARACTERISTICSNoise VoltageeOUT0.1Hz to 10Hz45µVp-p
10Hz to 10kHz100µVRMS
Ripple Rejection VIN = 1.8V ±100mV (f = 120Hz)85dB
Turn-On Settling TimetRSettling to 0.1%; COUT = 5nF200µs
Capacitive-Load Stability RangeCOUT(Note 2)471000nF
INPUTSupply Voltage RangeVINGuaranteed by Line Regulation Test1.85.5V
Quiescent Supply CurrentIINTA = +25°C35µATA = TMIN to TMAX36
Change in Quiescent Supply Current vs. Input VoltageΔIIN/ΔVIN1.8V ≤ VIN ≤ 5.5V0.10.5µA/V
MAX6018Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics (MAX6018_12–1.263V)
(VIN = 1.8V; COUT = 47nF, IOUT = 0; TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OUTPUTOutput VoltageVOUTMAX6018A_16 (0.2%)TA = +25°C1.59681.60001.6032VMAX6018B_16 (0.4%)TA = +25°C1.59361.60001.6064
Output Voltage Temperature DriftTCVOUT(Note 2)1650ppm/°C
Line RegulationΔVOUT/ΔVIN1.8V ≤ VIN ≤ 5.5V40250µV/V
Load RegulationΔVOUT/ΔIOUT
0 ≤ IOUT ≤ 1mA90700µV/mA
-750µA ≤ IOUT ≤ 00.650µV/µA
Dropout Voltage (Note 3)VIN - VOUTIOUT = 1mA100200mV
Short-Circuit CurrentISCSourcing to GND6mASinking from VIN2
Long-Term StabilityΔVOUT/
Time1000hrs at TA = +25°C100ppm
Thermal Hysteresis(Note 4)130ppm
DYNAMIC CHARACTERISTICSNoise VoltageeOUT0.1Hz to 10Hz40µVp-p
10Hz to 10kHz150µVRMS
Ripple Rejection VIN = 1.8V ±100mV (f = 120Hz)85dB
Turn-On Settling TimetRSettling to 0.1%; COUT = 5nF200µs
Capacitive-Load Stability RangeCOUT(Note 2)0.11000nF
INPUTSupply Voltage RangeVINGuaranteed by Line Regulation Test1.85.5V
Quiescent Supply CurrentIINTA = +25°C35µATA = TMIN to TMAX36
Change in Quiescent Supply Current vs. Input VoltageΔIIN/ΔVIN1.8V ≤ VIN ≤ 5.5V0.10.5µA/V
MAX6018Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Electrical Characteristics (MAX6018_16–1.600V)
(VIN = 2.0V; COUT = 47nF, IOUT = 0; TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OUTPUTOutput VoltageVOUTMAX6018A_18 (0.2%)TA = +25°C1.79641.80001.8036VMAX6018B_18 (0.4%)TA = +25°C1.79281.80001.8072
Output Voltage Temperature DriftTCVOUT(Note 2)1650ppm/°C
Line RegulationΔVOUT/ΔVIN2.0V ≤ VIN ≤ 5.5V40275µV/V
Load RegulationΔVOUT/ΔIOUT
0 ≤ IOUT ≤ 1mA90800µV/mA
-1mA ≤ IOUT ≤ 00.450µV/µA
Dropout Voltage (Note 3)VIN - VOUTIOUT = 1mA100200mV
Short-Circuit CurrentISCSourcing to GND7.5mASinking from VIN3
Long-Term StabilityΔVOUT/
Time1000hrs at TA = +25°C100ppm
Thermal Hysteresis(Note 4)130ppm
DYNAMIC CHARACTERISTICSNoise VoltageeOUT0.1Hz to 10Hz45µVp-p
10Hz to 10kHz160µVRMS
Ripple Rejection VIN = 2.0V ±100mV (f = 120Hz)85dB
Turn-On Settling TimetRSettling to 0.1%; COUT = 5nF200µs
Capacitive-Load Stability RangeCOUT(Note 2)0.11000nF
INPUTSupply Voltage RangeVINGuaranteed by Line Regulation Test2.05.5V
Quiescent Supply CurrentIINTA = +25°C35µATA = TMIN to TMAX36
Change in Quiescent Supply Current vs. Input VoltageΔIIN/ΔVIN2V ≤ VIN ≤ 5.5V0.10.5µA/V
MAX6018Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Electrical Characteristics (MAX6018_18–1.800V)
(VIN = 2.25V; COUT = 47nF, IOUT = 0; TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
Note 1: Devices are 100% production tested at TA = +25°C and are guaranteed by design from TA = TMIN to TMAX.
Note 2: Not production tested. Guaranteed by design.
Note 3: Dropout voltage is the minimum input voltage at which VOUT changes ≤ 0.2% from VOUT at rated VIN and is guaranteed by
Load Regulation Test.
Note 4: Thermal hysteresis is defined as the change in TA = +25°C output voltage before and after temperature cycling of the device
(from TA = TMIN to TMAX). Initial measurement at TA = +25°C is followed by temperature cycling the device to TA = +85°C
then to TA = -40°C and another measurement at TA = +25°C is compared to the original measurement at TA = +25°C.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OUTPUTOutput VoltageVOUTMAX6018A_21 (0.2%)TA = +25°C2.04392.04802.0521VMAX6018B_21 (0.4%)TA = +25°C2.03982.04802.0562
Output Voltage Temperature DriftTCVOUT(Note 2)1650ppm/°C
Line RegulationΔVOUT/ΔVIN2.25V ≤ VIN ≤ 5.5V45330µV/V
Load RegulationΔVOUT/ΔIOUT
0 ≤ IOUT ≤ 1mA901000µV/mA
-1mA ≤ IOUT ≤ 00.350µV/µA
Dropout Voltage (Note 3)VIN - VOUTIOUT = 1mA100200mV
Short-Circuit CurrentISCSourcing to GND10mASinking from VIN4
Long-Term StabilityΔVOUT/
Time1000hrs at TA = +25°C100ppm
Thermal Hysteresis(Note 4)130ppm
DYNAMIC CHARACTERISTICSNoise VoltageeOUT0.1Hz to 10Hz50µVp-p
10Hz to 10kHz175µVRMS
Ripple Rejection VIN = 2.25V ±100mV (f = 120Hz)85dB
Turn-On Settling TimetRSettling to 0.1%; COUT = 5nF200µs
Capacitive-Load Stability RangeCOUT(Note 2)0.11000nF
INPUTSupply Voltage RangeVINGuaranteed by Line Regulation Test2.255.5V
Quiescent Supply CurrentIINTA = +25°C35µATA = TMIN to TMAX36
Change in Quiescent Supply Current vs. Input VoltageΔIIN/ΔVIN2.25V ≤ VIN ≤ 5.5V0.10.5µA/V
MAX6018Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Electrical Characteristics (MAX6018_21–2.048V)
(TA = +25°C, unless otherwise noted.)
MAX6018_21
OUTPUT VOLTAGE DRIFT vs. TEMPERATURE
MAX6018 toc02
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
MAX6018_12
LONG-TERM DRIFT
MAX6018 toc03
TIME (HOURS)
OUTPUT VOLTAGE (V)
MAX6018_21
LONG-TERM DRIFT
MAX6018 toc04
TIME (HOURS)
OUTPUT VOLTAGE (V)
MAX6018_12
LINE REGULATION
MAX6018 toc05
INPUT VOLTAGE (V)
OUTPUT VOLTAGE CHARGE (mV)
TA = +85°C
TA = -40°C
TA = +25°C
MAX6018_21
LINE REGULATION
MAX6018 toc06
INPUT VOLTAGE (V)
OUTPUT VOLTAGE CHANGE (mV)
TA = +25°C
TA = +85°C
TA = -40°C
MAX6018_21
DROPOUT VOLTAGE vs. SOURCE CURRENT
MAX6018 toc07
SOURCE CURRENT (mA)
DROPOUT VOLTAGE (mV)
TA = +85°C
TA = +25°C
TA = -40°C
MAX6018_12
OUTPUT VOLTAGE DRIFT vs. TEMPERATURE
MAX6018 toc01
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
MAX6018_12
LOAD REGULATION
MAX6018 toc08
LOAD CURRENT (mA)
OUTPUT VOLTAGE CHANGE (mV)
TA = +85°C
TA = -40°C
TA = +25°C
MAX6018_21
LOAD REGULATION
MAX6018 toc09
SOURCE CURRENT (mA)
OUTPUT VOLTAGE CHANGE (mV)
TA = +85°C
TA = +25°C
TA = -40°C
MAX6018Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Typical Operating Characteristics
