19-2211; Rev 2; 12/02
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
General Description
Features
The MAX6018 is a precision, low-voltage, low-dropout,
micropower voltage reference in a SOT23 package. This
three-terminal reference operates with an input voltage
ꢀ Ultra-Low Supply Current: 5µA (max)
ꢀ 1.6V Output from 1.8V Input
from (V
+ 200mV) to 5.5V, and is available with out-
OUT
ꢀ Ultra-Small, 3-Pin SOT23 Package
ꢀ Initial Accuracy: ±±.2ꢀ (max)
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.
ꢀ Low Temperature Drift: 5±ppm/°C (max)
ꢀ 2±±mV Dropout Voltage
ꢀ Load Regulation (1mA Source): 7±±µV/mA (max)
ꢀ Line Regulation (V
+ 2±±mV) to 5.5V: 25±µV/V
OUT
(max)
ꢀ Four Output Voltage Options: 1.2V, 1.6V,
1.8V, 2.±48V
Ordering Information
Applications
PIN-
PACKAGE
TOP
MARK
PART
TEMP RANGE
Two-Cell, Battery-Operated Systems
Battery-Operated Equipment
Hand-Held Equipment
MAX6018AEUR12-T -40°C to +85°C
MAX6018BEUR12-T -40°C to +85°C
MAX6018AEUR16-T -40°C to +85°C
MAX6018BEUR16-T -40°C to +85°C
MAX6018AEUR18-T -40°C to +85°C
MAX6018BEUR18-T -40°C to +85°C
MAX6018AEUR21-T -40°C to +85°C
MAX6018BEUR21-T -40°C to +85°C
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
FZJH
FZJI
FZJJ
FZJK
FZJL
FZJM
FZJN
FZJO
Data-Acquisition Systems
Industrial and Process-Control Systems
Typical Application Circuit
V
CC
REFERENCE
OUT
IN
OUT
*
MAX6018
Selector Guide
1µF, MAX*
OUTPUT
VOLTAGE (V)
INITIAL
ACCURACY (%)
GND
PART
*OPTIONAL
MAX6018AEUR12
MAX6018BEUR12
MAX6018AEUR16
MAX6018BEUR16
MAX6018AEUR18
MAX6018BEUR18
MAX6018AEUR21
MAX6018BEUR21
1.263
0.2
0.4
0.2
0.4
0.2
0.4
0.2
0.4
1.263
Pin Configuration
1.600
1.600
TOP VIEW
1.800
IN
1
2
1.800
3
GND
MAX6018
2.048
OUT
2.048
SOT23
________________________________________________________________ Maxim Integrated Products
1
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.