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PDF MAX6037 Data sheet ( Hoja de datos )

Número de pieza MAX6037
Descripción Fixed and Adjustable Reference
Fabricantes Maxim Integrated Products　
Logotipo Maxim Integrated Products Logotipo



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19-3192; Rev 1; 12/07
Low-Power, Fixed and Adjustable Reference
with Shutdown in SOT23
General Description
The MAX6037 family of low-dropout, micropower volt-
age references offer fixed and adjustable output volt-
age options ranging from 1.184V to 5V. Connect an
external resistive-divider on the MAX6037_ADJ to
adjust the output voltage from 1.184V to 5V. The other
devices in the MAX6037 family feature fixed output volt-
ages of 1.25V, 2.048V, 2.5V, 3.0V, 3.3V, and 4.096V.
The MAX6037 offers shutdown functionality with an
active-low shutdown (500nA, max).
These series-mode voltage references operate from a
2.5V to 5.5V supply and consume 275µA (max) quies-
cent current. The output is stable driving loads from
0.02µF to 1µF and can source and sink 5mA of load
current. The MAX6037 offers a low temperature coeffi-
cient of 25ppm/°C and initial accuracy of ±0.2% (max).
The low dropout voltage (100mV, max at 1mA) and
supply-independent, low supply current make the
MAX6037 ideal for battery-powered applications.
The MAX6037 is available in the miniature 5-pin SOT23
package and is specified over the -40°C to +125°C
automotive temperature range.
Medical Equipment
Wireless LAN
Applications
Portable Equipment
Precision Regulators
Features
♦ Adjustable VOUT: 1.184V to 5V
♦ Fixed Outputs: 1.25V, 2.048V, 2.5V, 3.0V, 3.3V,
and 4.096V
♦ Shutdown Current < 500nA (max)
♦ 25ppm/°C (max) Temperature Coefficient (A Grade)
♦ ±0.2% (max) Initial Accuracy (A Grade)
♦ Low 100mV (max) Dropout Voltage at 1mA Load
Current
♦ 2.5V to 5.5V Input Voltage Range
♦ 5mA Sink and Source Current Capability
♦ Available in 5-Pin SOT23 Package
♦ Operates Over the Automotive Temperature
Range: -40°C to +125°C
Typical Operating Circuit
2.5V TO 5.5V INPUT
*
*OPTIONAL
IN OUT
MAX6037
SHDN
GND
REFERENCE
OUTPUT
0.02µF
TO 1µF
Pin Configuration appears at end of data sheet.
Ordering Information/Selector Guide
PART
OUTPUT
VOLTAGE (V)
INITIAL
ACCURACY %
MAX TEMPCO
(ppm/°C)
PIN-PACKAGE
MAX6037AAUK12+T
1.25
0.2 25 5 SOT23-5
MAX6037BAUK12+T
1.25
0.3 50 5 SOT23-5
MAX6037CAUK12+T
1.25
0.5 50 5 SOT23-5
MAX6037AAUK21+T
2.048
0.2 25 5 SOT23-5
MAX6037BAUK21+T
2.048
0.3 50 5 SOT23-5
MAX6037CAUK21+T
2.048
0.5 50 5 SOT23-5
+Denotes a lead-free package.
T = Tape and reel.
Note: All devices are specified over the -40°C to +125°C operating temperature range.
PKG
CODE
U5-2
U5-2
U5-2
U5-2
U5-2
U5-2
TOP
MARK
AEIV
AEIW
AEIX
AEIY
AEIZ
AEJA
Ordering Information/Selector Guide continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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MAX6037 pdf
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Low-Power, Fixed and Adjustable Reference
with Shutdown in SOT23
ELECTRICAL CHARACTERISTICS—MAX6037_25 (VOUT = 2.500V) (continued)
(VIN = VSHDN = +5V, IOUT = 0, COUT = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
INPUT
Supply Voltage Range
Quiescent Supply Current
Shutdown Supply Current
SHUTDOWN (SHDN)
Logic-High Input Voltage
Logic-Low Input Voltage
Logic-High Input Current
Logic-Low Input Current
SYMBOL
CONDITIONS
VIN
IIN
ISHDN
Guaranteed by line regulation test
VSHDN = 0V
VENH
VENL
IENH
IENL
2.7V ≤ VIN ≤ 5.5V
2.7V ≤ VIN ≤ 5.5V
2.7V ≤ VIN ≤ 5.5V, VSHDN = VIN
2.7V ≤ VIN ≤ 5.5V, VSHDN = 0V
MIN TYP MAX UNITS
2.7 5.5
210 275
0.05 500
V
µA
nA
2.0
0.75
-1000 0.15 +1000
-1000 0.05 +1000
V
V
nA
nA
ELECTRICAL CHARACTERISTICS—MAX6037_30 (VOUT = 3.000V)
(VIN = VSHDN = +5V, IOUT = 0, COUT = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Voltage
Output-Voltage Temperature
Coefficient (Note 2, 4)
Line Regulation
Load Regulation
OUT Short-Circuit Current
Dropout Voltage (Note 5)
Thermal Hysteresis (Note 3)
Long-Term Stability
DYNAMIC
VOUT
TCVOUT
∆VOUT/∆VIN
∆VOUT/∆IOUT
ISC
VIN - VOUT
∆VOUT/cycle
∆VOUT/time
MAX6037A_30 (0.2%)
TA = +25°C
MAX6037B_30 (0.3%)
MAX6037C_30 (0.5%)
MAX6037A_30
MAX6037B/C_30
(VOUT + 0.2V) ≤ VIN ≤ 5.5V
Sourcing: 0 ≤ IOUT ≤ 1mA
Sourcing: 1mA ≤ IOUT ≤ 5mA
Sinking: -1mA ≤ IOUT ≤ 0
Sinking: -5mA ≤ IOUT ≤ -1mA
Short to GND
Short to IN
ISOURCE = 1mA
ISOURCE = 5mA
1000h at TA = +25°C
2.9940
2.9910
2.9850
3.000
3.000
3.000
6
6
0.0004
0.005
0.008
0.02
0.01
33
32
40
190
501
133
3.0060
3.0090
3.0150
25
50
0.0133
0.035
0.03
0.2
0.2
100
410
V
ppm/°C
%/V
%/mA
mA
mV
ppm
ppm
Noise Voltage
Turn-On Settling Time
eOUT
tR
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
To VOUT = 0.1%
of final value,
COUT = 0.02µF
Initial power-up
VIN = 5V, SHDN pulled
from low to high
17 µVP-P
40 µVRMS
2.4
ms
2.1
_______________________________________________________________________________________ 5
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MAX6037 arduino
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Low-Power, Fixed and Adjustable Reference
with Shutdown in SOT23
Typical Operating Characteristics (continued)
(VIN = +3V for the MAX6037_12 and MAX6037_21; VIN = +5V for the MAX6037_25, MAX6037_30, MAX6037_33, and MAX6037_41;
IOUT = 0, COUT = 0.1µF, CIN = 0.1µF, TA = +25°C, unless otherwise specified.)
MAX6037_25 DROPOUT VOLTAGE
vs. SOURCE CURRENT (VOUT = 2.500V)
600
500
400
TA = +125°C
300
200
TA = -40°C
100 TA = +25°C
0
0 2 4 6 8 10
SOURCE CURRENT (mA)
MAX6037_12 LINE REGULATION
vs. TEMPERATURE (VOUT = 1.25V)
0
MAX6037_12
LOAD REGULATION (VOUT = 1.25V)
4
TA = +125°C
3
2
1
TA = -40°C
0 SINKING CURRENT
TA = +25°C
TA = -40°C
-1 SOURCING CURRENT
-2
-10
TA = +125°C
-5 0 5
OUTPUT CURRENT (mA)
10
MAX6037_25
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 2.500V)
0
MAX6037_41
LOAD REGULATION (VOUT = 4.096V)
6
5 TA = +125°C
4
3
TA = +25°C
2
1
0
TA = -40°C
SINKING CURRENT
TA = -40°C
-1
SOURCING CURRENT
-2 TA = +125°C
-3
-10 -5 0 5 10
OUTPUT CURRENT (mA)
MAX6037_41 SHUTDOWN CURRENT
vs. TEMPERATURE (VOUT = 4.096V)
3.0
-20
-20 TA = +125°C
-40
-40 -60
TA = +25°C
-80
-60 TA = -40°C
-100
2.5
2.0
1.5
1.0
0.5
0
-80
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
-120
0.001 0.01
0.1 1 10
FREQUENCY (kHz)
100 1000
-0.5
-50 -25
0 25 50 75 100 125
TEMPERATURE (C)
MAX6037_12 LINE TRANSIENT
(VOUT = 1.25V)
MAX6037 toc10
MAX6037_41 LINE TRANSIENT
(VOUT = 4.096V)
MAX6037 toc11
MAX6037_12 LOAD TRANSIENT
(VOUT = 1.25V)
MAX6037 toc12
+3.3V
VIN
+3V
5.5V
VIN
5V
+10µA
IOUT
-10µA
400µs/div
COUT = 0.1µF
CIN = 0
VOUT
AC-COUPLED
10mV/div
400µs/div
COUT = 0.1µF
CIN = 0
VOUT
AC-COUPLED
10mV/div
1ms/div
VOUT
AC-COUPLED
2mV/div
COUT = 1µF
______________________________________________________________________________________ 11
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