19-2300; Rev 2; 6/03
Ultra-High-Precision SOT23 Series
Voltage Reference
General Description
The MAX6033 ultra-high-precision series voltage refer-
ence features a low 7ppm/°C (max) temperature coeffi-
cient and a low dropout voltage (200mV, max). Low
temperature drift and low noise make the MAX6033
ideal for use with high-resolution ADCs or DACs.
This device uses bandgap technology for low-noise per-
formance and excellent accuracy. Laser-trimmed, high-
stability, thin-film resistors, and postpackage trimming
guarantee excellent initial accuracy (±0.04%, max). The
MAX6033 consumes only 40µA of supply current and
sources up to 15mA. Series mode references save sys-
tem power and use minimal external components com-
pared to two-terminal shunt references.
The MAX6033 is available in the miniature 6-pin SOT23
package and is offered over the automotive tempera-
ture range (-40°C to +125°C).
o
Tiny 6-Pin SOT23 Package
o
Ultra-Low Temperature Drift: 7ppm/°C (max)
o
±0.04% Initial Accuracy
o
Stable with Capacitive Loads
o
Low 16µV
P-P
Noise (0.1Hz to 10Hz) (2.5V Output)
o
15mA Output Source Current
o
Low 200mV Dropout Voltage
o
Low 40µA Quiescent Current
o
Wide 2.7V to 12.6V Supply Voltage
o
Excellent Load Regulation: 0.001mV/mA
Features
MAX6033
Ordering Information
PART
MAX6033AAUT_ _-T
MAX6033BAUT_ _-T
MAX6033CAUT_ _-T
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
Applications
Precision Regulators
A/D and D/A Converters
Power Supplies
Hard-Disk Drives
High-Accuracy Industrial and Process Control
Hand-Held Instruments
Note:
Two-number part suffix indicates output voltage option.
SOT23 Package Top Marks appear at end of data sheet.
Selector Guide
SUFFIX
25
30
41
50
VOLTAGE OUTPUT
2.500V
3.000V
4.096V
5.000V
Typical Operating Circuit
SUPPLY INPUT
Pin Configuration
TOP VIEW
IN
OUTS
OUTF
REFERENCE OUTPUT
I.C.*
1
MAX6033
6
OUTS
0.1µF*
MAX6033
0.1µF (min)
GND
I.C.*
3
GND
2
5
OUTF
4
IN
SOT23
*INPUT CAPACITOR IS OPTIONAL
*I.C. = INTERNALLY CONNECTED: DO NOT USE
________________________________________________________________
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.
Ultra-High-Precision SOT23 Series
Voltage Reference
MAX6033
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +13V
OUTF, OUTS to GND................................................-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Maximum Junction Temperature .....................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
ELECTRICAL CHARACTERISTICS—V
OUT
= 2.500V
(V
IN
= 5V, C
OUT
= 0.1µF, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Output Voltage
SYMBOL
V
OUT
T
A
= +25°C
CONDITIONS
MAX6033A
MAX6033B
MAX6033C
MAX6033A
Output-Voltage Accuracy
T
A
= +25°C
MAX6033B
MAX6033C
MAX6033A
Output Voltage Temperature
Coefficient
TCV
OUT
MAX6033B
MAX6033C
Input Voltage Range
Line Regulation
Load Regulation
V
IN
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
V
DO
T
A
= -40 C to +85 C
T
A
= -40
o
C to +125
o
C
T
A
= -40
o
C to +85
o
C
T
A
= -40
o
C to +125
o
C
T
A
= -40
o
C to +85
o
C
T
A
= -40 C to +125 C
2.7
3
0.001
0.02
0.3
40
o
o
o
o
o
o
MIN
2.4990
2.4950
2.4975
-0.04
-0.2
-0.1
TYP
2.5000
2.5000
2.5000
MAX
2.5010
2.5050
2.5025
+0.04
+0.2
+0.1
UNITS
V
%
1.5
2.5
3
7
6
10
7
10
10
15
20
40
12.6
25
50
0.05
0.1
0.2
0.4
0.5
60
75
85
µA
V
mV/mA
µV/V
V
ppm/°C
Inferred from line regulation specification
2.7V
≤
V
IN
≤
12.6V
-100µA
≤
I
OUT
≤
15mA
T
A
= +25°C
T
A
= -40°C to +125°C
T
A
= +25°C
T
A
= -40°C to +125°C
T
A
= -40
o
C to +85
o
C
T
A
= -40 C to +125 C
V
OUT
= 0.1%, I
OUT
= 1mA
Dropout Voltage (Note 2)
V
OUT
= 0.1%,
I
OUT
= 10mA
T
A
= +25
o
C
Quiescent Supply Current
I
IN
T
A
= -40
o
C to +85
o
C
T
A
= -40
o
C to +125
o
C
Output Short-Circuit Current
Output-Voltage Noise
Turn-On Settling Time
Temperature Hysteresis
Long-Term Stability
I
SC
e
n
t
ON
V
OUT
= 0
V
OUT
= V
IN
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
V
OUT
settles to ±0.01% of final value
(Note 3)
∆t
= 1000hr
90
-2
16
12
500
150
40
mA
µV
P-P
µV
RMS
µs
ppm
ppm
2
_______________________________________________________________________________________
Ultra-High-Precision SOT23 Series
Voltage Reference
ELECTRICAL CHARACTERISTICS—V
OUT
= 3.000V
(V
IN
= 5V, C
OUT
= 0.1µF, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Output Voltage
SYMBOL
V
OUT
T
A
= +25
o
C
CONDITIONS
MAX6033A
MAX6033B
MAX6033C
MAX6033A
Output-Voltage Accuracy
T
A
= +25 C
o
MAX6033
MIN
2.9988
2.9940
2.9970
-0.04
-0.2
-0.1
TYP
3.0000
3.0000
3.0000
MAX
3.0012
3.0060
3.0030
+0.04
+0.2
+0.1
UNITS
V
MAX6033B
MAX6033C
T
A
= -40
o
C to +85
o
C
T
A
= -40 C to +125 C
T
A
= -40 C to +85 C
T
A
= -40
o
C to +125
o
C
T
A
= -40
o
C to +85
o
C
T
A
= -40
o
C to +125
o
C
o
o
o
o
%
MAX6033A
Output-Voltage Temperature
Coefficient
TCV
OUT
MAX6033B
MAX6033C
Input Voltage Range
Line Regulation
Load Regulation
Dropout Voltage (Note 2)
V
IN
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
V
DO
1.5
2.5
3
7
6
10
3.2
4
0.002
0.02
0.2
40
7
10
10
15
20
40
12.6
30
60
0.06
0.12
0.2
0.4
60
75
85
µA
V
µV/V
mV/mA
V
ppm/°C
Inferred from line regulation specification
3.2V
≤
V
IN
≤
12.6V
-100µA
≤
I
OUT
≤
15mA
∆V
OUT
= 0.1%
T
A
= +25°C
T
A
= +25°C
T
A
= -40°C to +125°C
T
A
= +25°C
T
A
= -40°C to +125°C
I
OUT
= 1mA
I
OUT
= 10mA
Quiescent Supply Current
I
IN
T
A
= -40°C to +85°C
T
A
= -40°C to +125°C
V
OUT
= 0
V
OUT
= V
IN
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
V
OUT
settles to ±0.01% of final value
(Note 3)
∆t
= 1000hr
90
-2
24
15
600
150
40
Output Short-Circuit Current
Output-Voltage Noise
Turn-On Settling Time
Temperature Hysteresis
Long-Term Stability
I
SC
e
n
t
ON
mA
µV
P-P
µV
RMS
µs
ppm
ppm
ELECTRICAL CHARACTERISTICS—V
OUT
= 4.096V
(V
IN
= 5V, C
OUT
= 0.1µF, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Output Voltage
SYMBOL
V
OUT
T
A
= +25°C
CONDITIONS
MAX6033A
MAX6033B
MAX6033C
MAX6033A
Output-Voltage Accuracy
T
A
= +25°C
MAX6033B
MAX6033C
MIN
4.0943
4.0878
4.0919
-0.04
-0.2
-0.1
TYP
4.0960
4.0960
4.0960
MAX
4.0977
4.1042
4.1001
+0.04
+0.2
+0.1
%
V
UNITS
_______________________________________________________________________________________
3
Ultra-High-Precision SOT23 Series
Voltage Reference
MAX6033
ELECTRICAL CHARACTERISTICS—V
OUT
= 4.096V (continued)
(V
IN
= 5V, C
OUT
= 0.1µF, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
MAX6033A
Output-Voltage Temperature
Coefficient
TCV
OUT
MAX6033B
MAX6033C
Input-Voltage Range
Line Regulation
Load Regulation
Dropout Voltage (Note 2)
V
IN
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
V
DO
CONDITIONS
T
A
= -40 C to +85 C
T
A
= -40 C to +125 C
T
A
= -40
o
C to +85
o
C
T
A
= -40 C to +125 C
T
A
= -40
o
C to +85
o
C
T
A
= -40 C to +125 C
4.3
6
o
o
o
o
o
o
o
o
o
MIN
TYP
1.5
2.5
3
7
6
10
MAX
7
10
10
15
20
40
12.6
30
60
0.08
0.15
0.2
0.4
60
75
85
UNITS
ppm/°C
Inferred from line regulation specification
4.3V
≤
V
IN
≤
12.6V
-100µA
≤
I
OUT
≤
15mA
∆V
OUT
= 0.1%
T
A
= +25°C
T
A
= +25°C
T
A
= -40 C to +125 C
T
A
= +25°C
T
A
= -40
o
C to +125
o
C
I
OUT
= 1mA
I
OUT
= 10mA
o
V
µV/V
mV/mA
V
0.002
0.02
0.2
40
Quiescent Supply Current
I
IN
T
A
= -40°C to +85°C
T
A
= -40
o
C to +125
o
C
V
OUT
= 0
V
OUT
= V
IN
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
V
OUT
settles to ±0.01% of final value
(Note 3)
∆t
= 1000hr
90
-2
32
22
800
150
40
µA
Output Short-Circuit Current
Output-Voltage Noise
Turn-On Settling Time
Temperature Hysteresis
Long-Term Stability
I
SC
e
n
t
ON
mA
µV
P-P
µV
RMS
µs
ppm
ppm
ELECTRICAL CHARACTERISTICS—V
OUT
= 5.000V
(V
IN
= 5.5V, C
OUT
= 0.1µF, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Output Voltage
SYMBOL
V
OUT
T
A
= +25°C
CONDITIONS
MAX6033A
MAX6033B
MAX6033C
MAX6033A
Output-Voltage Accuracy
T
A
= +25°C
MAX6033B
MAX6033C
MAX6033A
Output-Voltage Temperature
Coefficient
TCV
OUT
MAX6033B
MAX6033C
Input Voltage Range
V
IN
T
A
= -40
o
C to +85
o
C
T
A
= -40 C to +125 C
T
A
= -40
o
C to +85
o
C
T
A
= -40 C to +125 C
T
A
= -40
o
C to +85
o
C
T
A
= -40
o
C to +125
o
C
5.2
o
o
o
o
MIN
4.9980
4.9900
4.9950
-0.04
-0.2
-0.1
TYP
5.000
5.000
5.000
MAX
5.0020
5.0100
5.0050
+0.04
+0.2
+0.1
UNITS
V
%
1.5
2.5
3
7
6
10
7
10
10
15
20
40
12.6
V
ppm/°C
Inferred from line regulation specification
4
_______________________________________________________________________________________
Ultra-High-Precision SOT23 Series
Voltage Reference
ELECTRICAL CHARACTERISTICS—V
OUT
= 5.000V (continued)
(V
IN
= 5.5V, C
OUT
= 0.1µF, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Line Regulation
Load Regulation
Dropout Voltage (Note 2)
SYMBOL
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
V
DO
CONDITIONS
5.2V
≤
V
IN
≤
12.6V
-100µA
≤
I
OUT
≤
15mA
∆V
OUT
= 0.1%
T
A
= +25°C
Quiescent Supply Current
I
IN
T
A
= -40°C to +85°C
T
A
= -40 C to +125 C
Output Short-Circuit Current
Output-Voltage Noise
Turn-On Settling Time
Temperature Hysteresis
Long-Term Stability
I
SC
e
n
t
ON
V
OUT
= 0
V
OUT
= V
IN
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
V
OUT
settles to ±0.01% of final value
(Note 3)
∆t
= 1000hr
90
-2
40
26
1000
150
40
o
o
MAX6033
MIN
o
o
TYP
7
0.003
MAX
50
100
0.1
0.2
0.2
0.4
60
75
85
UNITS
µV/V
mV/mA
V
T
A
= +25°C
T
A
= -40 C to +125 C
T
A
= +25°C
T
A
= -40 C to +125 C
I
OUT
= 1mA
I
OUT
= 10mA
o
o
0.02
0.2
40
µA
mA
µV
P-P
µV
RMS
µs
ppm
ppm
Note 1:
MAX6033 is 100% production tested at T
A
= +25°C and is guaranteed by design for T
A
= T
MIN
to T
MAX
as specified.
Note 2:
Dropout Voltage is the minimum input voltage at which V
OUT
changes
≤
0.1% from V
OUT
at V
IN
= 5V (V
IN
= 5.5V for
V
OUT
= 5V).
Note 3:
Temperature Hysteresis is defined as the change in +25°C output voltage before and after cycling the device
from T
MAX
to T
MIN
.
Typical Operating Characteristics
(V
IN
= 5V, C
OUT
= 0.1µF, I
OUT
= 0, T
A
= +25°C, unless otherwise specified.) (Note 4)
OUTPUT VOLTAGE vs.
TEMPERATURE (V
OUT
= 2.5V)
2.5010
2.5008
2.5006
2.5004
2.5002
2.5000
2.4998
2.4996
2.4994
2.4992
2.4990
2.4988
2.4986
2.4984
2.4982
2.4980
3 TYPICAL UNITS
5.0010
5.0008
5.0006
5.0004
5.0002
5.0000
4.9998
4.9996
4.9994
4.9992
4.9990
4.9988
4.9986
4.9984
4.9982
4.9980
MAX6033 toc01
OUTPUT VOLTAGE vs.
TEMPERATURE (V
OUT
= 5V)
MAX6033 toc02
LOAD REGULATION
(V
OUT
= 2.5V)
2.5035
2.5030
OUTPUT VOLTAGE (V)
2.5025
2.5020
2.5015
2.5010
2.5005
2.5000
2.4995
2.4990
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
T
A
= +125°C
MAX6033 toc03
3 TYPICAL UNITS
2.5040
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
-2
0
2
4
6
8 10 12 14 16 18 20
OUTPUT CURRENT (mA)
_______________________________________________________________________________________
5
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