19-2606; Rev 3; 11/06
High-Supply-Voltage, Precision
Voltage Reference in SOT23
General Description
Features
ꢀ Wide Supply Voltage Range: Up to 33V
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 25ppm/°C (max) and an initial
accuracy of 0.2ꢀ (max).
ꢀ 25ppm/°C (max) Temperature Coefficient
(-40°C to +85°C)
ꢀ
0ꢀ2ꢁ (max) ꢂnitial ꢃccuracy
ꢀ 95µꢃ (max) Quiescent Supply Current
ꢀ 10mꢃ Source Current, 2mꢃ Sink Current
ꢀ No Output Capacitor Required
ꢀ Stable with Capacitive Loads up to 5µF
Ordering Information
PIN-
TOP
PART
TEMP RANGE
The MAX6035 typically draws only 73µA 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 5µF. 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.
PACKAGE MARK
MAX6035AAUR25-T -40°C to +125°C 3 SOT23-3 FZMW
MAX6035BAUR25-T -40°C to +125°C 3 SOT23-3 FZMX
MAX6035ESA25
-40°C to +85°C
8 SO
—
MAX6035AAUR30-T -40°C to +125°C 3 SOT23-3 FZMY
MAX6035BAUR30-T -40°C to +125°C 3 SOT23-3 FZMZ
MAX6035AAUR50-T -40°C to +125°C 3 SOT23-3 FZNA
MAX6035BAUR50-T -40°C to +125°C 3 SOT23-3 FZNB
Note: The 3-pin SOT23 package code is U3-1. The 8-pin SO
package code is S8-2.
Selector Guide
The MAX6035 is available in a 3-pin SOT23 package
and is specified for operation from -40°C to +125°C.
MAXIMUM
TEMPCO
(ppm/°C)
MAXIMUM
INITIAL
ACCURACY
(%)
OUTPUT
VOLTAGE
(V)
PART
Applications
(-40°C to +85°C)
MAX6035AAUR25
MAX6035BAUR25
MAX6035ESA25
MAX6035AAUR30
MAX6035BAUR30
MAX6035AAUR50
MAX6035BAUR50
25
65
40
25
65
25
65
0.20
0.50
0.20
0.20
0.50
0.20
0.50
2.5
2.5
2.5
3.0
3.0
5.0
5.0
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
Typical Operating Circuit
Pin Configurations
+SUPPLY INPUT (SEE SELECTOR GUIDE)
TOP VIEW
IN
N.C.
IN
1
2
3
4
8
7
6
5
N.C.
N.C.
OUT
N.C.
REFERENCE
OUT
OUT
IN
1
2
0.1µF*
3
GND
MAX6035
MAX6035
MAX6035
N.C.
GND
OUT
GND
SOT23
*CAPACITOR IS OPTIONAL.
SO
________________________________________________________________ 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.