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MAX6018AEUR21-T
Precision, micropower, 1.8 V supply, low-dropout, SOT 23 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 out-
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.
ApplicationsTwo-Cell, Battery-Operated Systems
Battery-Operated Equipment
Hand-Held Equipment
Data-Acquisition Systems
Industrial and Process-Control Systems
FeaturesUltra-Low Supply Current: 5µA (max)1.6V Output from 1.8V InputUltra-Small, 3-Pin SOT23 PackageInitial Accuracy: ±0.2% (max)Low Temperature Drift: 50ppm/°C (max)200mV Dropout VoltageLoad 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
MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Ordering Information
Typical Application Circuit19-2211; Rev 2; 12/02
Selector Guide
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.
(Voltages Referenced to GND)
VIN............................................................................-0.3V to +6V
Output Short-Circuit Duration to GND or VIN............Continuous
Continuous 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
MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
ELECTRICAL CHARACTERISTICS (MAX6018_12–1.263V)
MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
ELECTRICAL CHARACTERISTICS (MAX6018_16–1.600V)
MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
ELECTRICAL CHARACTERISTICS (MAX6018_18–1.800V)(VIN= 2.0V; COUT= 47nF, IOUT= 0; TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
ELECTRICAL CHARACTERISTICS (MAX6018_21–2.048V)
Note 1:Devices are 100% production tested at TA= +25°C and are guaranteed by design from TA= TMINto TMAX.
Note 2:Not production tested. Guaranteed by design.
Note 3:Dropout voltage is the minimum input voltage at which VOUTchanges ≤0.2% from VOUTat 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= TMINto 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.
MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
Typical Operating Characteristics(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics(TA = +25°C, unless otherwise noted.)
