MAXIM MAX6520 Technical data
_______________General Description
The MAX6520 is the lowest-power 1.2V, precision,
three-terminal voltage reference offered in a SOT23-3
package. Ideal for 3V battery-powered equipment
where power conservation is critical, the MAX6520 is a
low-power alternative to existing two-terminal shunt references. Unlike two-terminal references that throw
away battery current and require an external series
resistor, the MAX6520 has a 70µA maximum supply
current (typically only 50µA) that is independent of the
input voltage. This feature translates to maximum efficiency at all battery voltages.
The MAX6520 operates from a supply voltage as low as
2.4V, and initial accuracy is ±1% for the SOT23 package. Output voltage temperature coefficient is typi-
cally only 25ppm/°C, and is guaranteed to be less
than 50ppm/°C in the SOT23 package.
________________________Applications
Battery-Powered Systems
Portable and Hand-Held Equipment
Data-Acquisition Systems
Instrumentation and Process Control
____________________________Features
♦ 3-Pin SOT23 Package
♦ 50ppm/°C max Tempco
♦ Supply Current Independent of Input Voltage
Over Temperature
♦ 50µA Supply Current
♦ 2.4V to 11V Input Voltage Range
♦ ±1% Initial Accuracy
MAX6520
50ppm/°C, SOT23, 3-Terminal,
1.2V Voltage Reference
TOP VIEW
1
2
3
GND
V
IN
V
OUT
MAX6520
SOT23
__________________Pin Configuration
______________Ordering Information
V
IN
GND
V+
2.4V to 11V
0V
0.1µF
V
OUT
V
OUT
1.2V
MAX6520
__________Typical Operating Circuit
19-1130; Rev 1; 7/05
*Contact factory for availability.
PART
TEMP RANGE
PIN-
TOP
MARK
MAX6520EUR-T
EFAA
________________________________________________________________ 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.
PACKAGE
-40°C to +85°C3 SOT23-3
80
50
2
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX6520 TOC-01
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
8
60
46
70
103957 11
75
50
-50
SUPPLY CURRENT
vs. TEMPERATURE
MAX6520 TOC-02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
100
60
55
65
050
70
-25 25 75
VIN = 9V
VIN = 5V
VIN = 3V
75
50
-50
SUPPLY CURRENT
vs. TEMPERATURE
MAX6520 TOC-02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
100
60
55
65
050
70
-25 25 75
VIN = 9V
VIN = 5V
VIN = 3V
__________________________________________Typical Operating Characteristics
(V
IN
= 3V, I
LOAD
= 0mA, TA = +25°C, unless otherwise noted.)
MAX6520
50ppm/°C, SOT23, 3-Terminal,
1.2V Voltage Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VIN= 2.4V, I
LOAD
= 0mA, TA= +25°C, unless otherwise noted.)
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.
Supply Voltage (VIN) ..............................................-0.3V to +12V
V
OUT
............................................................-0.3V to (VIN+ 0.3V)
Output Short-Circuit Duration ..........Continuous to Either Supply
Continuous Power Dissipation (T
A
= +70°C)
SOT23 (derate 4mW/°C above +70°C) ...........................320mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
e
n
PARAMETER SYMBOL MIN TYP MAX UNITS
10
400
1.188 1.200 1.212 V
230Line Regulation V
OUT/VIN
µV/V
4.3
Short-Circuit Output Current I
SC
400
mA
CONDITIONS
VIN= 2.4V to 11V, TA= T
MIN
to T
MAX
(Note 1)
0.1Hz to 10Hz
10Hz to 10kHz
V
OUT
shorted to GND
V
OUT
shorted to V
IN
I
Q
50 58
Quiescent Supply Current
70
µA
TA= +25°C
TA= T
MIN
to T
MAX
(Note 1)
1.5 5
Change in Supply Current
vs. Input Voltage
IQ/V
IN
µA/VVIN= 2.4V to 11V
TA= +25°C
µA
Note 1: Production testing done at TA= +25°C, over temperature limits guaranteed by parametric correlation data.
Output Voltage Noise µVp-p
Load Regulation V
OUT/IOUTILOAD
= -50µA to 400µA (Note 1) 0.1 1 µV/µA
Output Voltage V
OUT
1.176 1.224 VTA= T
MIN
to T
MAX
MAX6520EUR
Output Voltage Temperature
Coefficient
TCV
OUT
25 50 ppm/°CMAX6520EUR, TA= T
MIN
to T
MAX
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