19-2606; Rev 0; 10/02
High-Supply-Voltage, Precision
Voltage Reference in SOT23
General Description
The MAX6035 is a high-voltage, precision micropower
voltage reference. This three-terminal device is available
with output voltage options of 2.5V, 3.0V, and 5.0V. It is an
excellent upgrade for industry-standard devices such as
the REF02 and REF43. The MAX6035 offers 14x lower
power than the REF02 and 5x lower power than the
REF43, as well as a reduced package size from an 8-pin
SO to a 3-pin SOT23. The MAX6035 features a proprietary
temperature coefficient curvature-correction circuit and
laser-trimmed, thin-film resistors that result in a very low
temperature coefficient of 20ppm/掳C (max) and an initial
accuracy of 卤0.2% (max).
The MAX6035 typically draws only 73碌A of supply cur-
rent and can source 10mA or sink 2mA of load current.
Unlike conventional shunt-mode (two-terminal) refer-
ences that waste supply current and require an external
resistor, this device offers a supply current that is virtu-
ally independent of the supply voltage and does not
require an external resistor. Additionally, this internally
compensated device does not require an external com-
pensation capacitor, but is also stable with capacitive
loads up to 5碌F. Eliminating the external compensation
capacitor saves valuable board area in space-critical
applications. The supply independent, ultra-low supply
current makes this device ideal for battery-operated,
high-performance systems.
The MAX6035 is available in a 3-pin SOT23 package
and is specified for operation from -40掳C to +125掳C.
Features
o
Wide Supply Voltage Range: Up to 33V
o
20ppm/掳C (max) Temperature Coefficient
(-40掳C to +85掳C)
o
卤0.2% (max) Initial Accuracy
o
Small 3-Pin SOT23 Package
o
95碌A (max) Quiescent Supply Current
o
10mA Source Current, 2mA Sink Current
o
No Output Capacitor Required
o
Stable with Capacitive Loads up to 5碌F
o
Output Voltages: 2.5V, 3.0V, 5.0V
MAX6035
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX6035AAUR25-T* -40掳C to +125掳C
MAX6035BAUR25-T* -40掳C to +125掳C
MAX6035AAUR30-T* -40掳C to +125掳C
MAX6035BAUR30-T* -40掳C to +125掳C
MAX6035AAUR50-T
MAX6035BAUR50-T
-40掳C to +125掳C
-40掳C to +125掳C
3 SOT23-3 FZMW
3 SOT23-3 FZMX
3 SOT23-3 FZMY
3 SOT23-3 FZMZ
3 SOT23-3 FZNA
3 SOT23-3 FZNB
*Future
product鈥攃ontact factory for availability.
Selector Guide
PART
MAXIMUM
MAXIMUM
OUTPUT
INITIAL
TEMPCO
VOLTAGE
ACCURACY
(ppm/掳C)
(V)
(%)
(-40掳C to +85掳C)
20
65
20
65
20
65
0.20
0.50
0.20
0.50
0.20
0.50
2.5
2.5
3.0
3.0
5.0
5.0
Applications
4mA to 20mA Industrial
Control Loops
Li+ Battery Chargers
12-Bit A/D and D/A
Converters
Digital Multimeters
Portable Data-Acquisition
Systems
Low-Power Test
Equipment
MAX6035AAUR25
MAX6035BAUR25
MAX6035AAUR30
MAX6035BAUR30
MAX6035AAUR50
+SUPPLY INPUT (SEE
SELECTOR GUIDE)
Typical Operating Circuit
MAX6035BAUR50
Pin Configuration
IN
OUT
0.1碌F*
REFERENCE
OUT
TOP VIEW
IN
1
MAX6035
GND
MAX6035
OUT
2
3
GND
*CAPACITOR IS OPTIONAL.
SOT23
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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