MAX6129 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – Ultra-Low-Power Series Voltage Reference

19-2507; Rev 0; 7/02
Ultra-Low-Power Series Voltage Reference
General Description
The MAX6129 micropower, low-dropout bandgap volt-
age 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 compa-
rable devices in an SO package. This series-mode volt-
age 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) tem-
perature coefficient make the MAX6129 suitable for
precision applications. Additionally, an internal com-
pensation 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 avail-
able in a 5-pin SOT23 package and is specified over
the extended temperature range (-40°C to +85°C).
Battery-Powered Systems
Hand-Held Instruments
Precision Power Supplies
A/D and D/A Converters
Applications
Features
o Ultra-Low 5.25µA (max) Supply Current
o 4mA Output Source Current
o 1mA Output Sink Current
o ±0.4% (max) Initial Accuracy
o 40ppm/°C (max) Temperature Coefficient
o 2.5V to 12.6V Supply Range
o Low 200mV Dropout
o Stable with Capacitive Loads Up to 10µF
o No External Capacitors Required
o Miniature 5-Pin SOT23 Package
Ordering Information
PART
PIN-
OUTPUT
TEMP RANGE
PACKAGE
VOLTAGE
(V)
MAX6129_EUK21-T -40°C to +85°C 5 SOT23-5 2.048
MAX6129_EUK25-T -40°C to +85°C 5 SOT23-5 2.500
MAX6129_EUK30-T -40°C to +85°C 5 SOT23-5 3.000
MAX6129_EUK33-T -40°C to +85°C 5 SOT23-5 3.300
MAX6129_EUK41-T -40°C to +85°C 5 SOT23-5 4.096
MAX6129_EUK50-T -40°C to +85°C 5 SOT23-5 5.000
Note: The MAX6129 is available in A or B grades. 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.
Typical Operating Circuit
V_IN = 2.5V TO 12.6V
*
IN
MAX6129
OUT
GND
*CAPACITOR IS OPTIONAL
Pin Configuration
TOP VIEW
IN 1
5 OUT
MAX6129
GND 2
N.C. 3
4 N.C.
SOT23
________________________________________________________________ Maxim Integrated Products 1
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