MAX6029
Ultra-Low-Power Precision Series
Voltage Reference
General Description
The MAX6029 micropower, low-dropout bandgap volt-
age reference combines ultra-low supply current and
low drift in a miniature 5-pin SOT23 surface-mount pack-
age that uses 70% less board space than comparable
devices in an SO package. An initial accuracy of 0.15%
and a 30ppm/°C (max) temperature coefficient make the
MAX6029 suitable for precision applications. This
series-mode voltage reference sources up to 4mA and
sinks up to 1mA of load current. A wide 2.5V to 12.6V
supply range, ultra-low 5.25µA (max) supply current,
and a low 200mV dropout voltage make these devices
ideal for battery-operated systems. Additionally, an
internal compensation capacitor eliminates the need for
an external compensation capacitor and ensures stabili-
ty with load capacitances up to 10µF.
The MAX6029 provides six output voltages of 2.048V,
2.5V, 3V, 3.3V, 4.096V, and 5V. The MAX6029 is avail-
able in a 5-pin SOT23 or an 8-pin SO package and is
specified over the extended temperature range (-40°C
to +85°C).
Features
•
•
•
•
•
•
•
•
•
•
Ultra-Low 5.25µA (max) Supply Current
±0.15% (max) Initial Accuracy
30ppm/°C (max) Temperature Coefficient
4mA Output Source Current
1mA Output Sink Current
2.5V to 12.6V Supply Range
Low 200mV Dropout
Stable with Capacitive Loads Up to 10µF
No External Capacitors Required
Miniature 5-Pin SOT23 Package, 8-Pin SO Package
Ordering Information
PART
MAX6029EUK21+T
MAX6029EUK25+T
MAX6029ESA25+
MAX6029EUK30+T
MAX6029EUK33+T
MAX6029EUK41+T
MAX6029ESA41+
MAX6029EUK50+T
PIN-PACKAGE
5 SOT23
5 SOT23
8 SO
5 SOT23
5 SOT23
5 SOT23
8 SO
5 SOT23
TOP
MARK
AEHD
AEHF
—
AEHH
AEHN
AEHJ
—
AEHL
Applications
Battery-Powered Systems
Hand-Held Instruments
Precision Power Supplies
A/D and D/A Converters
Note:
All devices are specified over the -40°C to +85°C oper-
ating temperature range.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Pin Configuration
TOP VIEW
Selector Guide
PART
MAX6029EUK21
MAX6029EUK25
PIN-PACKAGE
5 SOT23
5 SOT23
8 SO
5 SOT23
5 SOT23
5 SOT23
8 SO
5 SOT23
OUTPUT
VOLTAGE (V)
2.048
2.500
2.500
3.000
3.300
4.096
4.096
5.000
IN
1
5
OUT
N.C.
IN
N.C.
1
2
3
8
N.C.
N.C.
OUT
N.C.
MAX6029ESA25
MAX6029EUK30
MAX6029EUK33
MAX6029EUK41
MAX6029ESA41
MAX6029EUK50
MAX6029
GND 2
MAX6029
7
6
5
N.C. 3
4
N.C.
GND 4
SOT23
SO
19-2892; Rev 3; 1/09
MAX6029
Ultra-Low-Power Precision Series
Voltage Reference
Absolute Maximum Ratings
IN to GND ...............................................................-0.3V to +13V
OUT to GND ..............-0.3V to the lower of +6V and (V
IN
+ 0.3V)
Output to GND Short-Circuit Duration........................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
8-Pin SO (derate 5.9mW/°C above +70°C)...............470.6mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +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—MAX6029_21 (V
OUT
= 2.048V)
(V
IN
= 2.5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
Output Voltage
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Output Short-Circuit Current
Long-Term Stability
Thermal Hysteresis
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT
Supply Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
V
IN
= 2.5V to 12.6V
2.5
12.6
5.25
1.5
V
µA
µA/V
e
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
30
115
43
450
µV
P-P
µV
RMS
dB
µs
V
OUT
TCV
OUT
T
A
= +25°C
(Notes 2, 3)
27
0.22
2.4
60
150
140
(Note 4)
2.0449
2.0480
2.0511
30
200
0.7
5.5
V
ppm/°C
µV/V
µV/µA
mA
ppm
ppm
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ΔV
OUT
/ΔV
IN
V
IN
= 2.5V to 12.6V
ΔV
OUT
/
ΔI
OUT
I
SC
ΔV
OUT
/time 1000 hours at +25°C
I
OUT
= 0 to 4mA
I
OUT
= 0 to -1mA
ΔV
OUT
/ΔV
IN
V
IN
= 2.5V
±200mV,
f = 120Hz
t
R
To V
OUT
= 0.1% of final value
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Maxim Integrated | 2
MAX6029
Ultra-Low-Power Precision Series
Voltage Reference
Electrical Characteristics—MAX6029_25 (V
OUT
= 2.500V)
(V
IN
= 2.7V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
Output Voltage
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Dropout Voltage (Note 5)
Output Short-Circuit Current
Long-Term Stability
Thermal Hysteresis
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT
Supply Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
V
IN
= 2.7V to 12.6V
2.7
12.6
5.75
1.5
V
µA
µA/V
e
OUT
ΔV
OUT
/ΔV
IN
t
R
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
V
IN
= 2.7V
±200mV,
f = 120Hz
To V
OUT
= 0.1% of final value
39
137
34
700
µV
P-P
µV
RMS
dB
ms
V
OUT
TCV
OUT
ΔV
OUT
/ΔV
IN
ΔV
OUT
/ΔI
OUT
V
IN
- V
OUT
I
SC
ΔV
OUT
/time
1000 hours at +25°C
(Note 4)
T
A
= +25°C
(Notes 2, 3)
V
IN
= 2.7V to 12.6V
I
OUT
= 0 to 4mA
I
OUT
= 0 to -1mA
I
OUT
= 0
I
OUT
= 4mA
60
150
140
30
0.1
2.5
MAX6029EUK
MAX6029ESA
2.4963
2.495
2.5000
2.500
2.5038
2.505
30
230
0.6
6.2
100
200
V
ppm/°C
µV/V
µV/µA
mV
mA
ppm
ppm
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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Maxim Integrated | 3
MAX6029
Ultra-Low-Power Precision Series
Voltage Reference
Electrical Characteristics—MAX6029_30 (V
OUT
= 3.000V)
(V
IN
= 3.2V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
Output Voltage
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Dropout Voltage (Note 5)
Output Short-Circuit Current
Long-Term Stability
Thermal Hysteresis
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT
Supply Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
V
IN
= 3.2V to 12.6V
3.2
12.6
6.75
1.5
V
µA
µA/V
e
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
To V
OUT
= 0.1% of final value
39
161
37
775
µV
P-P
µV
RMS
dB
µs
V
OUT
TCV
OUT
T
A
= +25°C
(Notes 2, 3)
15
0.1
2.4
2.9955
3.0000
3.0045
30
250
0.6
6.5
100
200
60
150
140
(Note 4)
V
ppm/°C
µV/V
µV/µA
mV
mA
ppm
ppm
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ΔV
OUT
/ΔV
IN
V
IN
= 3.2V to 12.6V
ΔV
OUT
/
ΔI
OUT
V
IN
- V
OUT
I
SC
ΔV
OUT
/time 1000 hours at +25°C
I
OUT
= 0 to 4mA
I
OUT
= 0 to -1mA
I
OUT
= 0
I
OUT
= 4mA
ΔV
OUT
/ΔV
IN
V
IN
= 3.2V
±200mV,
f = 120Hz
t
R
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Maxim Integrated | 4
MAX6029
Ultra-Low-Power Precision Series
Voltage Reference
Electrical Characteristics—MAX6029_33 (V
OUT
= 3.000V)
(V
IN
= 3.5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
Output Voltage
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Dropout Voltage (Note 5)
Output Short-Circuit Current
Long-Term Stability
Thermal Hysteresis
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT
Supply Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
V
IN
= 3.5V to 12.6V
3.5
12.6
7.25
1.5
V
µA
µA/V
e
OUT
ΔV
OUT
/ΔV
IN
t
R
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
V
IN
= 3.5V
±200mV,
f = 120Hz
To V
OUT
= 0.1% of final value
56
174
38
1
µV
P-P
µV
RMS
dB
ms
SYMBOL
V
OUT
TCV
OUT
ΔV
OUT
/ΔV
IN
ΔV
OUT
/ΔI
OUT
V
IN
- V
OUT
I
SC
ΔV
OUT
/time
1000 hours at +25°C
(Note 4)
T
A
= +25°C
(Notes 2, 3)
V
IN
= 3.5V to 12.6V
I
OUT
= 0 to 4mA
I
OUT
= 0 to -1mA
I
OUT
= 0
I
OUT
= 4mA
60
150
140
30
0.1
2.4
CONDITIONS
MIN
3.2951
TYP
3.3000
MAX
3.3050
30
270
0.6
7
100
200
UNITS
V
ppm/°C
µV/V
µV/µA
mV
mA
ppm
ppm
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