MAXIM MAX6129 Technical data
General Description
The MAX6129 micropower, low-dropout bandgap voltage reference combines ultra-low supply current and
low drift in a miniature 5-pin SOT23 surface-mount
package that uses 70% less board space than comparable devices in an SO package. 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.
An initial accuracy of 0.4% and a 40ppm/°C (max) temperature coefficient make the MAX6129 suitable for
precision applications. Additionally, an internal compensation capacitor eliminates the need for an external
compensation capacitor and ensures stability with load
capacitances up to 10µF.
The MAX6129 provides six output voltages of 2.048V,
2.5V, 3V, 3.3V, 4.096V, and 5V. The MAX6129 is available in a 5-pin SOT23 package and in die form.
Applications
Battery-Powered Systems
Handheld Instruments
Precision Power Supplies
A/D and D/A Converters
Features
♦ Ultra-Low 5.25µA (max) Supply Current
♦ 4mA Output Source Current
♦ 1mA Output Sink Current
♦ ±0.4% (max) Initial Accuracy
♦ 40ppm/°C (max) Temperature Coefficient
♦ 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
MAX6129
Ultra-Low-Power Series Voltage Reference
________________________________________________________________ Maxim Integrated Products 1
GND
N.C.N.C.
15OUTIN
MAX6129
SOT23
TOP VIEW
2
34
Pin Configuration
Ordering Information
OUT
GND
IN
MAX6129
VIN = 2.5V TO 12.6V
*
*CAPACITOR IS OPTIONAL
Typical Operating Circuit
19-2507; Rev 2; 3/05
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.
PA R T
TEMP RANGE
PIN -
O U TPU T
VO LT A G E
( V)
M AX 6129_E U K21- T
2.048
M AX 6129AC /D 21
Dice 2.048
M AX 6129_E U K25- T
2.500
M AX 6129AC /D 25
Dice 2.500
M AX 6129_E U K30- T
3.000
M AX 6129AC /D 30
Dice 3.000
M AX 6129_E U K33- T
3.300
M AX 6129AC /D 33
Dice 3.300
M AX 6129_E U K41- T
4.096
M AX 6129AC /D 41
Dice 4.096
M AX 6129_E U K50- T
5.000
M AX 6129AC /D 50
Dice 5.000
Note: The MAX6129_EUK is available in A or B grade. Choose
the desired grade from the Selector Guide and insert the suffix
in the blank above to complete the part number.
Selector Guide appears at end of data sheet.
PA C K A G E
-40°C to +85°C 5 SOT23-5
-40°C to +85°C
-40°C to +85°C 5 SOT23-5
-40°C to +85°C
-40°C to +85°C 5 SOT23-5
-40°C to +85°C
-40°C to +85°C 5 SOT23-5
-40°C to +85°C
-40°C to +85°C 5 SOT23-5
-40°C to +85°C
-40°C to +85°C 5 SOT23-5
-40°C to +70°C
MAX6129
Ultra-Low-Power Series Voltage Reference
2 _______________________________________________________________________________________
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.
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
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS—MAX6129_21 (V
OUT
= 2.048V)
(VIN= 2.5V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage V
OUT
TA = +25°C
MAX6129B (±1%)
V
MAX6129A 40
Output Voltage Temperature
Coefficient (Notes 2, 3)
TCV
OUT
MAX6129B 100
ppm/°C
Line Regulation (Note 4)
VIN = 2.5V to 12.6V 27 200
µV/V
I
OUT
= 0 to 4mA
0.7
Load Regulation (Note 4)
∆V
OUT
/
∆I
OUT I
OUT
= 0 to -1mA 2.4 5.5
µV/µA
Output Short-Circuit Current I
SC
60 mA
Long-Term Stability
1000 hours at +25°C
ppm
Thermal Hysteresis (Note 5)
ppm
DYNAMIC CHARACTERISTICS
f = 0.1Hz to 10Hz 30
µV
P-P
Noise Voltage e
OUT
f = 10Hz to 1kHz
µV
RMS
Ripple Rejection
VIN = 2.5V ±200mV, f = 120Hz 43 dB
Turn-On Settling Time t
R
To V
OUT
= 0.1% of final value
µs
INPUT
Supply Voltage Range V
IN
2.5
V
Supply Current I
IN
µA
Change in Supply Current
(Note 4)
I
IN/VIN
VIN = 2.5V to 12.6V 1.0 1.5
µA/V
∆V
/∆V
OUT
IN
∆V
/time
OUT
∆V
/∆V
OUT
IN
MAX6129A (±0.4%) 2.0398 2.0480 2.0562
2.0275 2.0480 2.0685
0.22
150
140
115
450
12.6
5.25
MAX6129
Ultra-Low-Power Series Voltage Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX6129_25 (V
OUT
= 2.500V)
(VIN= 2.7V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage V
OUT
TA = +25°C
MAX6129B (±1%)
V
MAX6129A 40
Output Voltage Temperature
Coefficient (Notes 2, 3)
TCV
OUT
MAX6129B 100
ppm/°C
Line Regulation (Note 4)
VIN = 2.7V to 12.6V 30 230
µV/V
I
OUT
= 0 to 4mA 0.1 0.6
Load Regulation (Note 4)
I
OUT
= 0 to -1mA 2.5 6.2
µV/µA
I
OUT
= 0 0.3 100
Dropout Voltage (Notes 4, 6)
I
OUT
= 4mA
200
mV
Output Short-Circuit Current I
SC
60 mA
Long-Term Stability
1000 hours at +25°C
ppm
Thermal Hysteresis (Note 5)
ppm
DYNAMIC CHARACTERISTICS
f = 0.1Hz to 10Hz 39
µV
P-P
Noise Voltage e
OUT
f = 10Hz to 1kHz
µV
RMS
Ripple Rejection
VIN = 2.7V ±200mV, f = 120Hz 34 dB
Turn-On Settling Time t
R
To V
OUT
= 0.1% of final value
ms
INPUT
Supply Voltage Range V
IN
2.7
V
Supply Current I
IN
µA
Change in Supply Current
(Note 4)
I
IN/VIN
VIN = 2.7V to 12.6V 1.0 1.5
µA/V
∆V
/∆V
OUT
IN
∆V
/∆I
OUT
OUT
VIN - V
OUT
∆V
/time
OUT
∆V
/∆V
OUT
IN
MAX6129A (±0.4%) 2.4900 2.5000 2.5100
2.4750 2.5000 2.5250
140
150
140
137
700
12.6
5.75
MAX6129
Ultra-Low-Power Series Voltage Reference
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—MAX6129_30 (V
OUT
= 3.000V)
(VIN= 3.2V, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage V
OUT
TA = +25°C
MAX6129B (±1%)
V
MAX6129A 40
Output Voltage Temperature
Coefficient (Notes 2, 3)
TCV
OUT
MAX6129B 100
ppm/°C
Line Regulation (Note 4)
VIN = 3.2V to 12.6V 15 250
µV/V
I
OUT
= 0 to 4mA 0.1 0.6
Load Regulation (Note 4)
∆V
OUT
/
∆I
OUT I
OUT
= 0 to -1mA 2.4 6.5
µV/µA
I
OUT
= 0 0.2 100
Dropout Voltage (Notes 4, 6)
I
OUT
= 4mA
200
mV
Output Short-Circuit Current I
SC
25 mA
Long-Term Stability
1000 hours at +25°C
ppm
Thermal Hysteresis (Note 5)
ppm
DYNAMIC CHARACTERISTICS
f = 0.1Hz to 10Hz 50
µV
P-P
Noise Voltage e
OUT
f = 10Hz to 1kHz
µV
RMS
Ripple Rejection
VIN = 3.2V ±200mV, f = 120Hz 37 dB
Turn-On Settling Time t
R
To V
OUT
= 0.1% of final value
µs
INPUT
Supply Voltage Range V
IN
3.2
V
Supply Current I
IN
µA
Change in Supply Current
(Note 4)
I
IN/VIN
VIN = 3.2V to 12.6V 1.0 1.5
µA/V
∆V
/∆V
OUT
IN
VIN - V
OUT
∆V
/time
OUT
∆V
/∆V
OUT
IN
MAX6129A (±0.4%) 2.9880 3.0000 3.0120
2.9700 3.0000 3.0300
140
150
140
161
775
12.6
6.75
MAX6129
Ultra-Low-Power Series Voltage Reference
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—MAX6129_33 (V
OUT
= 3.300V)
(VIN= 3.5V, 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
Output Voltage V
OUT
TA = +25°C
MAX6129B (±1%)
V
MAX6129A 40
Output Voltage Temperature
Coefficient (Notes 2, 3)
TCV
OUT
MAX6129B
ppm/°C
Line Regulation (Note 4)
VIN = 3.5V to 12.6V 30
µV/V
I
OUT
= 0 to 4mA 0.1 0.6
Load Regulation (Note 4)
I
OUT
= 0 to -1mA 2.4 7
µV/µA
I
OUT
= 0 0.2
Dropout Voltage (Notes 4, 6)
I
OUT
= 4mA
mV
Output Short-Circuit Current I
SC
25 mA
Long-Term Stability
1000 hours at +25°C
ppm
Thermal Hysteresis (Note 5)
ppm
DYNAMIC CHARACTERISTICS
f = 0.1Hz to 10Hz 56
µV
P-P
Noise Voltage e
OUT
f = 10Hz to 1kHz
µV
RMS
Ripple Rejection
VIN = 3.5V ±200mV, f = 120Hz 38 dB
Turn-On Settling Time t
R
To V
OUT
= 0.1% of final value 1 ms
INPUT
Supply Voltage Range V
IN
3.5
V
Supply Current I
IN
µA
Change in Supply Current
(Note 4)
I
IN/VIN
VIN = 3.5V to 12.6V 1.0 1.5
µA/V
SYMBOL
∆V
/∆V
OUT
IN
∆V
/∆I
OUT
OUT
VIN - V
OUT
∆V
/time
OUT
∆V
/∆V
OUT
IN
MIN TYP MAX
MAX6129A (±0.4%) 3.2868 3.3000 3.3132
3.2670 3.3000 3.3330
100
270
100
140 200
150
140
174
12.6
7.25
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