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MAX6018
Technical data
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MAXIM MAX6018 Technical data

General Description
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 from (V
OUT
+ 200mV) to 5.5V, and is available with out-
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 shunt­mode (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
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 (V
OUT
+ 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
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
*
IN
V
CC
OUT
REFERENCE
OUT
GND
MAX6018
*OPTIONAL
1µF, MAX*
Typical Application Circuit
19-2211; Rev 2; 12/02
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
PIN-
TOP
MARK
MAX6018AEUR12-T
FZJH
MAX6018BEUR12-T
FZJI
MAX6018AEUR16-T
FZJJ
MAX6018BEUR16-T
FZJK
MAX6018AEUR18-T
FZJL
MAX6018BEUR18-T
FZJM
MAX6018AEUR21-T
FZJN
MAX6018BEUR21-T
FZJO
Selector Guide
PART
OUTPUT
VOLTAGE (V)
INITIAL
ACCURACY (%)
MAX6018AEUR12 1.263 ±0.2
MAX6018BEUR12 1.263 ±0.4
MAX6018AEUR16 1.600 ±0.2
MAX6018BEUR16 1.600 ±0.4
MAX6018AEUR18 1.800 ±0.2
MAX6018BEUR18 1.800 ±0.4
MAX6018AEUR21 2.048 ±0.2
MAX6018BEUR21 2.048 ±0.4
Pin Configuration
TEMP RANGE
-40°C to +85°C 3 SOT23-3
-40°C to +85°C 3 SOT23-3
-40°C to +85°C 3 SOT23-3
-40°C to +85°C 3 SOT23-3
-40°C to +85°C 3 SOT23-3
-40°C to +85°C 3 SOT23-3
-40°C to +85°C 3 SOT23-3
-40°C to +85°C 3 SOT23-3
PACKAGE
TOP VIEW
1
IN
OUT
MAX6018
2
SOT23
3 GND
ABSOLUTE MAXIMUM RATINGS
Stresses 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
2 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (MAX6018_12–1.263V)
(VIN= 1.8V; C
OUT
= 47nF, I
OUT
= 0; TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
CONDITIONS
UNITS
OUTPUT
MAX6018A_12 (0.2%)
Output Voltage V
OUT
MAX6018B_12 (0.4%)
V
Output Voltage Temperature Drift
(Note 2) 16 50
ppm/oC
Line Regulation
∆V
IN
1.8V ≤ VIN ≤ 5.5V 50
µV/V
0 ≤ I
OUT
≤ 1mA 90
µV/mA
Load Regulation
∆I
OUT -100µA ≤ I
OUT
≤ 029
µV/µA
Sourcing to GND 3
Short-Circuit Current I
SC
Sinking from V
IN
6
mA
Long-Term Stability
Time
1000hrs at T
A
= +25°C
ppm
Thermal Hysteresis (Note 4)
ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 45
µVp-p
Noise Voltage e
OUT
10Hz to 10kHz
µV
RMS
Ripple Rejection VIN = 1.8V ±100mV (f = 120Hz) 85 dB
Turn-On Settling Time t
R
Settling to 0.1%; C
OUT
= 5nF
µs
Capacitive-Load Stability Range
C
OUT
(Note 2) 47
nF
INPUT
Supply Voltage Range V
IN
Guaranteed by Line Regulation Test
5.5 V
TA = +25°C35
Quiescent Supply Current I
IN
TA = T
MIN
to T
MAX
36
µA
Change in Quiescent Supply Current vs. Input Voltage
1.8V ≤ VIN ≤ 5.5V 0.1 0.5
µA/V
SYMBOL
TCV
OUT
∆V
OUT
/
MIN TYP MAX
1.2605 1.2630 1.2655
1.2580 1.2630 1.2681
400
∆V
/
OUT
∆V
OUT
∆IIN/∆V
/
1.8
IN
100
130
100
200
700
1000
MAX6018
Precision, Micropower, 1.8V Supply,
Low-Dropout, SOT23 Voltage Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (MAX6018_16–1.600V)
(VIN= 1.8V; C
OUT
= 47nF, I
OUT
= 0; TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
CONDITIONS
UNITS
OUTPUT
MAX6018A_16 (0.2%) TA = +25°C
Output Voltage V
OUT
MAX6018B_16 (0.4%) TA = +25°C
V
Output Voltage Temperature Drift
(Note 2) 16 50
ppm/oC
Line Regulation
∆V
IN
1.8V ≤ VIN ≤ 5.5V 40
µV/V
0 ≤ I
OUT
≤ 1mA 90
µV/mA
Load Regulation
∆I
OUT -750µA ≤ I
OUT
≤ 0 0.6 50
µV/µA
Dropout Voltage (Note 3)
I
OUT
= 1mA
200 mV
Sourcing to GND 6
Short-Circuit Current I
SC
Sinking from V
IN
2
mA
Long-Term Stability
Time
1000hrs at T
A
= +25°C
ppm
Thermal Hysteresis (Note 4)
ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 40
µVp-p
Noise Voltage e
OUT
10Hz to 10kHz
µV
RMS
Ripple Rejection VIN = 1.8V ±100mV (f = 120Hz) 85 dB
Turn-On Settling Time t
R
Settling to 0.1%; C
OUT
= 5nF
µs
Capacitive-Load Stability Range
C
OUT
(Note 2)
nF
INPUT
Supply Voltage Range V
IN
Guaranteed by Line Regulation Test
5.5 V
TA = +25°C35
Quiescent Supply Current I
IN
TA = T
MIN
to T
MAX
36
µA
Change in Quiescent Supply Current vs. Input Voltage
1.8V ≤ VIN ≤ 5.5V 0.1 0.5
µA/V
SYMBOL
TCV
OUT
∆V
OUT
∆V
OUT
VIN - V
∆V
OUT
/
/
OUT
/
MIN TYP MAX
1.5968 1.6000 1.6032
1.5936 1.6000 1.6064
0.1 1000
1.8
250
700
100
100
130
150
200
∆IIN/∆V
IN
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