General Description
The MAX6043 precision voltage reference provides
accurate preset +2.5V, +3.3V, +4.096V, +5.0V, and
+10V reference voltages from up to +40V input volt-
ages. The MAX6043 features a proprietary temperature
coefficient curvature-correction circuit and laser-
trimmed thin-film resistors that result in a very low tem-
perature coefficient of 15ppm/°C (max) and excellent
initial accuracy of 0.05% (max). Low temperature drift
and low noise make the MAX6043 ideal for use with
high-resolution A/D or D/A converters.
The MAX6043 draws 320µA of supply current and
sources 10mA or sinks 0.6mA of load current. The
MAX6043 uses bandgap technology for low-noise per-
formance and excellent accuracy. The MAX6043 does
not require an output bypass capacitor for stability, and
is stable with capacitive loads up to 100µF. Eliminating
the output bypass capacitor saves valuable board area
in space-critical applications. The supply-independent,
low supply current makes the MAX6043 ideal for bat-
tery-operated, high-performance systems.
The MAX6043 is available in a 6-pin SOT23 package
and operates over the automotive (-40°C to +125°C)
temperature range.
Applications
Analog-to-Digital Converters
Digital-to-Analog Converters
Digital Voltmeters
Voltage Regulators
Threshold Detectors
Features
♦+2.5V, +3.3V, +4.096V, +5.0V, or +10V Output
Voltages
♦Excellent Temperature Stability: 15ppm/°C (max)
♦Tight Initial Accuracy: 0.05% (max)
♦Tiny SOT23 Package
♦Wide +4.5V to +40V Supply Voltage Range
♦Low Noise: 4µVP-P (typ at 2.5V Output)
♦Short-Circuit Protected
♦Wide Operating Temperature Range
-40°C to +125°C
♦Stable with Capacitive Loads from 0 to 100µF
♦No External Capacitors Required for Stability
MAX6043
Precision High-Voltage Reference in SOT23
________________________________________________________________ Maxim Integrated Products 1
19-3036; Rev 1; 5/04
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.
Ordering Information
PART TEMP RANGE PIN-
PACKAGE
TOP
MARK
MAX6043AAUT25-T -40°C to +125°C 6 SOT23-6 ABRZ
MAX6043BAUT25-T -40°C to +125°C 6 SOT23-6 ABDQ
MAX6043CAUT25-T -40°C to +125°C 6 SOT23-6 ABDR
Ordering Information continued at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
Selector Guide
PART
OUTPUT
VOLTAGE
(V)
TEMPCO
(ppm/oC)
-40oC to
+125oC
INITIAL
ACCURACY
(%)
MAX6043AAUT25 2.5 15 0.06
MAX6043BAUT25 2.5 20 0.1
MAX6043CAUT25 2.5 65 0.5
MAX6043AAUT33 3.3 15 0.06
MAX6043BAUT33 3.3 20 0.1
MAX6043CAUT33 3.3 65 0.5
MAX6043AAUT41 4.096 15 0.06
MAX6043BAUT41 4.096 20 0.1
MAX6043CAUT41 4.096 65 0.5
MAX6043AAUT50 5.0 15 0.06
MAX6043BAUT50 5.0 20 0.1
MAX6043CAUT50 5.0 65 0.5
MAX6043AAUT10 10.0 15 0.05
MAX6043BAUT10 10.0 20 0.1
MAX6043CAUT10 10.0 65 0.5
GND
INI.C.*
*INTERNALLY CONNECTED. DO NOT CONNECT.
16OUTS
5OUTF
I.C.*
MAX6043
SOT23-6
TOP VIEW
2
34
Pin Configuration
MAX6043
Precision High-Voltage Reference in SOT23
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
IN to GND ...............................................................-0.3V to +42V
OUTF, OUTS to GND...................................-0.3V to (VIN + 0.3V)
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
OUT_ Short-Circuit Duration .....................................................5s
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS—VOUT = +2.5V
(VIN = +5V, IOUT = 0, TA= TMIN to TMAX. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTPUT
MAX6043A (0.06%) 2.4985 2.5000 2.5015
MAX6043B (0.1%) 2.4975 2.5000 2.5025
Output Voltage IOUT = 0, TA = +25°C
MAX6043C (0.5%) 2.4876 2.5000 2.5125
V
MAX6043A_25 3 15
MAX6043B_25 5 25
Output-Voltage Temperature
Coefficient (Note 2) TA = -40°C to +125°C
MAX6043C_25 10 65
ppm/°C
TA = +25°C16
Line Regulation (Note 4) 4.5V < VIN < 40V TA = -40°C to +125°C 1.5 10 ppm/V
TA = +25°C870
Sourcing,
0 < IOUT < 10mA TA = -40°C to +125°C70
TA = +25°C 70 900
Load Regulation (Note 4)
Sinking,
-0.6mA < IOUT < 0mA TA = -40°C to +125°C 900
ppm/mA
Output shorted to GND 60
OUT Short-Circuit Current Output shorted to IN -2 mA
Thermal Hysteresis (Note 3) 150 ppm
Long-Term Stability ∆t = 1000hr 150 ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 4 µVP-P
Output Noise Voltage 10Hz to 1kHz 7 µVRMS
Turn-On Settling Time To VOUT = 0.05% of final value, COUT = 50pF 150 µs
INPUT
Supply Voltage Range Inferred from line regulation test 4.5 40.0 V
TA = +25°C 320 490
Quiescent Supply Current IOUT = 0 TA = -40°C to +125°C 370 650 µA
MAX6043
Precision High-Voltage Reference in SOT23
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—VOUT = +3.3V
(VIN = +10V, IOUT = 0, TA= TMIN to TMAX. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTPUT
MAX6043A (0.06%) 3.2980 3.3000 3.3020
MAX6043B (0.1%) 3.2967 3.3000 3.3033
Output Voltage IOUT = 0, TA = +25°C
MAX6043C (0.5%) 3.2836 3.3000 3.3165
V
MAX6043A_33 3 15
MAX6043B_33 5 25
Output-Voltage Temperature
Coefficient (Note 2) TA = -40°C to +125°C
MAX6043C_33 10 65
ppm/°C
TA = +25°C16
Line Regulation (Note 4) 5.3V ≤ VIN ≤ 40V TA = -40°C to +125°C 1.5 10 ppm/V
TA = +25°C2370
Sourcing,
0 ≤ IOUT ≤ 10mA TA = -40°C to +125°C70
TA = +25°C 100 900
Load Regulation (Note 4)
Sinking,
-0.6mA ≤ IOUT ≤ 0mA TA = -40°C to +125°C 900
ppm/mA
OUT shorted to GND 60
OUT Short-Circuit Current OUT shorted to IN -2 mA
Thermal Hysteresis (Note 3) 150 ppm
Long-Term Stability ∆t = 1000hr 150 ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 5.3 µVP-P
Output Noise Voltage 10Hz to 1kHz 9.5 µVRMS
Turn-On Settling Time To VOUT = 0.05% of final value, COUT = 50pF 180 µs
INPUT
Supply Voltage Range Inferred from line regulation test 5.3 40.0 V
TA = +25°C 320 490
Quiescent Supply Current IOUT = 0 TA = -40°C to +125°C 380 650 µA
MAX6043
Precision High-Voltage Reference in SOT23
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—VOUT = +4.096V
(VIN = +10V, IOUT = 0, TA= TMIN to TMAX. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTPUT
MAX6043A (0.06%) 4.0935 4.0960 4.0985
MAX6043B (0.1%) 4.0919 4.0960 4.1001Output Voltage IOUT = 0, TA = +25°C
MAX6043C (0.5%) 4.0755 4.0960 4.1165
V
MAX6043A_41 3 15
MAX6043B_41 5 25
Output-Voltage Temperature
Coefficient (Note 2) TA = -40°C to +125°C
MAX6043C_41 10 65
ppm/°C
TA = +25°C16
Line Regulation (Note 4) 6.1V ≤ VIN ≤ 40V TA = -40°C to +125°C 1.5 10 ppm/V
TA = +25°C1970
Sourcing,
0 ≤ IOUT ≤ 10mA TA = -40°C to +125°C70
TA = +25°C 100 900
Load Regulation (Note 4)
Sinking,
-0.6mA ≤ IOUT ≤ 0mA TA = -40°C to +125°C 900
ppm/mA
OUT shorted to GND 60
OUT Short-Circuit Current OUT shorted to IN -2 mA
Thermal Hysteresis (Note 3) 150 ppm
Long-Term Stability ∆t = 1000hr 150 ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 6.6 µVP-P
Output Noise Voltage 10Hz to 1kHz 12 µVRMS
Turn-On Settling Time To VOUT = 0.05% of final value, COUT = 50pF 200 µs
INPUT
Supply Voltage Range Inferred from line regulation test 6.1 40.0 V
TA = +25°C 320 490
Quiescent Supply Current IOUT = 0 TA = -40°C to +125°C 380 650 µA
MAX6043
Precision High-Voltage Reference in SOT23
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—VOUT = +5.0V
(VIN = +15V, IOUT = 0, TA= TMIN to TMAX. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTPUT
MAX6043A (0.06%) 4.9970 5.0000 5.0030
MAX6043B (0.1%) 4.9950 5.0000 5.0050Output Voltage IOUT = 0, TA = +25°C
MAX6043C (0.5%) 4.9751 5.0000 5.0250
V
MAX6043A_50 3 15
MAX6043B_50 5 25
Output-Voltage Temperature
Coefficient (Note 2) TA = -40°C to +125°C
MAX6043C_50 10 65
ppm/°C
TA = +25°C16
Line Regulation (Note 4) 7V ≤ VIN ≤ 40V TA = -40°C to +125°C 1.5 10 ppm/V
TA = +25°C3270
Sourcing,
0 ≤ IOUT ≤ 10mA TA = -40°C to +125°C70
TA = +25°C 130 900
Load Regulation (Note 4)
Sinking,
-0.6mA ≤ IOUT ≤ 0mA TA = -40°C to +125°C 900
ppm/mA
OUT shorted to GND 60
OUT Short-Circuit Current OUT shorted to IN -2 mA
Thermal Hysteresis (Note 3) 150 ppm
Long-Term Stability ∆t = 1000hr 150 ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 9.5 µVP-P
Output Noise Voltage 10Hz to 1kHz 15 µVRMS
Turn-On Settling Time To VOUT = 0.05% of final value, COUT = 50pF 230 µs
INPUT
Supply Voltage Range Inferred from line regulation test 7.0 40.0 V
TA = +25°C 320 490
Quiescent Supply Current IOUT = 0 TA = -40°C to +125°C 380 650 µA
MAX6043
Precision High-Voltage Reference in SOT23
6 _______________________________________________________________________________________
Note 1: All devices are 100% production tested at TA= +25°C and guaranteed by design over TA= TMIN to TMAX as specified.
Note 2: Temperature coefficient is defined as ∆VOUT divided by the temperature range.
Note 3: Thermal hysteresis defined as the change in output voltage at TA= +25°C before and after cycling the device from TMAX to TMIN.
Note 4: Line and load regulation do not include the effect of self heating.
ELECTRICAL CHARACTERISTICS—VOUT = +10.0V
(VIN = +15V, IOUT = 0, TA= TMIN to TMAX. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTPUT
MAX6043A (0.05%) 9.9950 10.0000 10.0050
MAX6043B (0.1%) 9.9900 10.0000 10.0100
Output Voltage IOUT = 0, TA = +25°C
MAX6043C (0.5%) 9.9500 10.0000 10.0500
V
MAX6043A_10 3 15
MAX6043B_10 5 25
Output-Voltage Temperature
Coefficient (Note 2) TA = -40°C to +125°C
MAX6043C_10 10 65
ppm/°C
TA = +25°C16
Line Regulation (Note 4) 12V ≤ VIN ≤ 40V TA = -40°C to +125°C 1.5 10 ppm/V
TA = +25°C1670
Sourcing,
0 ≤ IOUT ≤ 10mA TA = -40°C to +125°C70
TA = +25°C 170 900
Load Regulation (Note 4)
Sinking,
-0.6mA ≤ IOUT ≤ 0mA TA = -40°C to +125°C 900
ppm/mA
OUT shorted to GND 60
OUT Short-Circuit Current OUT shorted to IN -2 mA
Thermal Hysteresis (Note 3) 150 ppm
Long-Term Stability ∆t = 1000hr 150 ppm
DYNAMIC CHARACTERISTICS
0.1Hz to 10Hz 19 µVP-P
Output Noise Voltage 10Hz to 1kHz 30 µVRMS
Turn-On Settling Time To VOUT = 0.05% of final value, COUT = 50pF 390 µs
INPUT
Supply Voltage Range Inferred from line regulation test 12.0 40.0 V
TA = +25°C 320 490
Quiescent Supply Current IOUT = 0 TA = -40°C to +125°C 390 650 µA
MAX6043
Precision High-Voltage Reference in SOT23
_______________________________________________________________________________________ 7
OUTPUT VOLTAGE vs. TEMPERATURE
(VOUT = 2.5V)
MAX6043 toc01
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
1109565 80-10 520 35 50-25
2.4985
2.4990
2.4995
2.5000
2.5005
2.5010
2.5015
2.5020
2.4980
-40 125
THREE TYPICAL UNITS
OUTPUT VOLTAGE vs. TEMPERATURE
(VOUT = 10V)
MAX6043 toc02
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
1109565 80-10 5 20 35 50-25
9.996
9.997
9.998
9.999
10.000
10.001
10.002
10.003
10.004
10.005
9.990
9.991
9.992
9.993
9.994
9.995
-40 125
THREE TYPICAL UNITS
LOAD REGULATION
(SOURCING, VOUT = 10V)
MAX6043 toc03
OUTPUT CURRENT (mA)
∆VOUT (mV)
605030 402010
-12
-10
-8
-6
-4
-2
0
2
4
-14
070
TA = -40°C
TA = +125°C
TA = +85°C
TA = +25°C
LOAD REGULATION
(SOURCING, VOUT = 2.5V)
MAX6043 toc04
OUTPUT CURRENT (mA)
∆VOUT (mV)
605010 20 30 40070
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
TA = +25°C
TA = +125°C
TA = +85°C
TA = -40°C
LOAD REGULATION
(SINKING, VOUT = 10V)
MAX6043 toc05
OUTPUT CURRENT (mA)
∆VOUT (mV)
-1-2-3
-10
-5
0
5
10
15
20
25
-15
-4 0
TA = -40°C
TA = +125°C
TA = +85°C
TA = +25°C
LOAD REGULATION
(SINKING, VOUT = 2.5V)
MAX6043 toc06
OUTPUT CURRENT (mA)
∆VOUT (mV)
-0.5-1.0-2.5 -2.0 -1.5
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
-3.0 0
TA = -40°C
TA = +125°C
TA = +85°C
TA = +25°C
LINE REGULATION
(VOUT = 2.5V)
MAX6043 toc07
INPUT VOLTAGE (V)
∆VOUT (mV)
363224 2812 16 208440
-0.0250
0
0.0250
0.0500
0.0750
0.1000
0.1250
0.1500
0.1750
-0.0500
TA = -40°C
TA = +125°C
TA = +85°C
TA = +25°C
LINE REGULATION
(VOUT = 10V)
MAX6043 toc08
INPUT VOLTAGE (V)
∆VOUT (mV)
363216 20 24 2812 40
-0.100
0
0.100
0.200
0.300
0.400
0.500
-0.200
TA = -40°C
TA = +125°C
TA = +85°C
TA = +25°C
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. LOAD CURRENT (VOUT = 2.5V)
MAX6043 toc09
LOAD CURRENT (mA)
MINIMUM INPUT-OUTPUT DIFFERENTIAL (V)
604020
0.5
1.0
1.5
2.0
2.5
3.0
0
080
∆VOUT / VOUT = 0.1%
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
Typical Operating Characteristics
(VIN = +5V for VOUT = +2.5V, VIN = +10V for VOUT = +3.3V or +4.096V, VIN = +15V for VOUT = +5V or +10V, IOUT = 0, TA= +25°C,
unless otherwise noted.)
MAX6043
Precision High-Voltage Reference in SOT23
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +10V for VOUT = +3.3V or +4.096V, VIN = +15V for VOUT = +5V or +10V, IOUT = 0, TA= +25°C,
unless otherwise noted.)
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. LOAD CURRENT (VOUT = 10V)
MAX6043 toc10
LOAD CURRENT (mA)
MINIMUM INPUT-OUTPUT DIFFERENTIAL (V)
4020
0.5
1.0
1.5
2.0
2.5
3.0
0
060
∆VOUT / VOUT = 0.1%
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 2.5V)
MAX6043 toc11
FREQUENCY (kHz)
PSRR (dB)
100101
-100
-80
-60
-40
-20
0
-120
0.1 1000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 10V)
MAX6043 toc12
FREQUENCY (kHz)
PSRR (dB)
100101
-100
-80
-60
-40
-20
0
-120
0.1 1000
0.1 1 100 1000
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6043 toc13
FREQUENCY (kHz)
OUTPUT IMPEDANCE (Ω)
10
100
0.01
0.1
1
10
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 2.5V)
MAX6043 toc14
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
363224 288 12 16 204
40
80
120
160
200
240
280
320
360
400
440
480
0
040
TA = +125°CTA = +85°C
TA = -40°CTA = +25°C
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 10V)
MAX6043 toc15
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
363224 288 12 16 204
40
80
120
160
200
240
280
320
360
400
440
0
040
TA = +125°CTA = +85°C
TA = -40°C
TA = +25°C
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 2.5V)
MAX6043 toc16
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1109565 80-10 520 35 50-25
260
280
300
320
340
360
380
400
420
440
240
-40 125
VIN = 5V
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 10V)
MAX6043 toc17
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1109565 80-10 5 20 35 50-25
260
280
300
320
340
360
380
400
420
440
240
-40 125
VIN = 15V
OUTPUT NOISE-VOLTAGE DENSITY
vs. FREQUENCY
MAX6043 toc18
FREQUENCY (Hz)
OUTPUT NOISE-VOLTAGE DENSITY (nV/√Hz)
100101
1000
0.1 1000
10,000
100
VOUT = 10V
VOUT = 2.5V
MAX6043
Precision High-Voltage Reference in SOT23
_______________________________________________________________________________________ 9
0.1Hz TO 10Hz OUTPUT NOISE
(VOUT = 2.5V)
MAX6043 toc19
VOUT
AC-COUPLED
1µV/div
1s/div
0.1Hz TO 10Hz OUTPUT NOISE
(VOUT = 10V)
MAX6043 toc20
VOUT
AC-COUPLED
4µV/div
1s/div
LOAD TRANSIENT
(VOUT = 2.5V)
MAX6043 toc21
VIN = 5V
COUT = 0µF
0
20mA
2.5V VOUT
50mV/div
AC-COUPLED
IOUT
10mA/div
100µs/div
LOAD TRANSIENT
(VOUT = 10V)
MAX6043 toc22
VIN = 15V
COUT = 0µF
0
20mA
10V VOUT
200mV/div
AC-COUPLED
IOUT
10mA/div
100µs/div
LOAD TRANSIENT
(VOUT = 2.5V)
MAX6043 toc23
VIN = 5V
COUT = 1µF
0
20mA
2.5V VOUT
50mV/div
AC-COUPLED
IOUT
10mA/div
100µs/div
LOAD TRANSIENT
(VOUT = 10V)
MAX6043 toc24
VIN = 15V
COUT = 1µF
0
20mA
10V VOUT
100mV/div
AC-COUPLED
IOUT
10mA/div
100µs/div
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +10V for VOUT = +3.3V or +4.096V, VIN = +15V for VOUT = +5V or +10V, IOUT = 0, TA= +25°C,
unless otherwise noted.)
TURN-ON TRANSIENT
(VOUT = 2.5V)
MAX6043 toc31
COUT = 0µF
0V
2.5V
5V VIN
2V/div
VOUT
1V/div
4µs/div
0V
TURN-ON TRANSIENT
(VOUT = 10V)
MAX6043 toc32
COUT = 0µF
0V
10V
15V
VIN
5V/div
VOUT
5V/div
40µs/div
0V
MAX6043
Precision High-Voltage Reference in SOT23
10 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +10V for VOUT = +3.3V or +4.096V, VIN = +15V for VOUT = +5V or +10V, IOUT = 0, TA= +25°C,
unless otherwise noted.)
LOAD TRANSIENT
(VOUT = 2.5V)
MAX6043 toc25
VIN = 5V
COUT = 0µF
-2mA
0
2.5V
VOUT
50mV/div
AC-COUPLED
IOUT
2mA/div
200µs/div
LOAD TRANSIENT
(VOUT = 10V)
MAX6043 toc26
VIN = 15V
COUT = 0µF
-2mA
0
10V
VOUT
100mV/div
AC-COUPLED
IOUT
2mA/div
400µs/div
LINE TRANSIENT
(VOUT = 2.5V)
MAX6043 toc29
VIN
AC-COUPLED
500mV/div
10µs/div
5.5V
VOUT
AC-COUPLED
10mV/div
4.5V
LINE TRANSIENT
(VOUT = 10V)
MAX6043 toc30
VIN
AC-COUPLED
500mV/div
10µs/div
15.5V
VOUT
AC-COUPLED
10mV/div
14.5V
LOAD TRANSIENT
(VOUT = 2.5V)
MAX6043 toc27
VIN = 5V
COUT = 1µF
-2mA
0
2.5V
VOUT
20mV/div
AC-COUPLED
IOUT
2mA/div
200µs/div
LOAD TRANSIENT
(VOUT = 10V)
MAX6043 toc28
VIN = 15V
COUT = 1µF
-2mA
0
10V
VOUT
50mV/div
AC-COUPLED
IOUT
2mA/div
400µs/div
MAX6043
Precision High-Voltage Reference in SOT23
______________________________________________________________________________________ 11
TURN-ON TRANSIENT
(VOUT = 2.5V)
MAX6043 toc33
COUT = 1µF
0V
2.5V
5V VIN
2V/div
VOUT
1V/div
40µs/div
0V
TURN-OFF TRANSIENT
(VOUT = 2.5V)
MAX6043 toc35
COUT = 0µF
0V
2.5V
5V VIN
2V/div
VOUT
1V/div
1µs/div
0V
TURN-ON TRANSIENT
(VOUT = 10V)
MAX6043 toc34
COUT = 1µF
0V
10V
15V
VIN
5V/div
VOUT
5V/div
40µs/div
0V
TURN-OFF TRANSIENT
MAX6043 toc38
COUT = 1µF
0V
10V
15V
VIN
5V/div
VOUT
5V/div
40ms/div
0V
LONG-TERM DRIFT
(VOUT = 2.5V)
MAX6043 toc39
TIME (hr)
∆ OUTPUT VOLTAGE (ppm)
800600400200
-125
-75
-100
-50
0
-25
25
50
100
75
125
150
-150
0 1000
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +10V for VOUT = +3.3V or +4.096V, VIN = +15V for VOUT = +5V or +10V, IOUT = 0, TA= +25°C,
unless otherwise noted.)
TURN-OFF TRANSIENT
(VOUT = 10V)
MAX6043 toc36
COUT = 0µF
0V
10V
15V
VIN
5V/div
VOUT
5V/div
2µs/div
0V
TURN-OFF TRANSIENT
(VOUT = 2.5V)
MAX6043 toc37
COUT = 1µF
0V
2.5V
5V VIN
2V/div
VOUT
1V/div
20ms/div
0V
LONG-TERM DRIFT
(VOUT = 10V)
XMAX6043 toc40
TIME (hr)
∆ OUTPUT VOLTAGE (ppm)
800600400200
-125
-75
-100
-50
-25
0
50
25
75
100
125
150
-150
0 1000
MAX6043
Precision High-Voltage Reference in SOT23
12 ______________________________________________________________________________________
Applications Information
Bypassing/Output Capacitance
For the best line-transient performance, decouple the
input with a 0.1µF ceramic capacitor as shown in the
Typical Operating Circuit. Place the capacitor as close
to IN as possible. When transient performance is less
important, no capacitor is necessary.
The MAX6043 does not require an output capacitor for
stability and is stable with capacitive loads up to 100µF.
In applications where the load or the supply can experi-
ence step changes, a larger output capacitor reduces
the amount of overshoot (undershoot) and improves the
circuit’s transient response. Place output capacitors as
close to the device as possible for best performance.
Supply Current
The MAX6043 consumes 320µA of quiescent supply
current. This improved efficiency reduces power dissi-
pation and extends battery life.
Thermal Hysteresis
Thermal hysteresis is the change in the output voltage
at TA= +25°C before and after the device is cycled
over its entire operating temperature range. Hysteresis
is caused by differential package stress appearing
across the bandgap core transistors. The typical ther-
mal hysteresis value is 150ppm.
Turn-On Time
The MAX6043 typically turns on and settles to within
0.05% of the preset output voltage in 150µs.
Short-Circuited Outputs
The MAX6043 features a short-circuit-protected output.
Internal circuitry limits the output current to 60mA when
short-circuiting the output.
Temperature Coefficient vs.
Operating Temperature Range
for a 1 LSB Maximum Error
In a data converter application, the reference voltage of
the converter must stay within a certain limit to keep the
error in the data converter smaller than the resolution
limit through the operating temperature range. Figure 1
shows the maximum allowable reference-voltage tem-
perature coefficient to keep the conversion error to less
than 1 LSB, as a function of the operating temperature
range (TMAX - TMIN) with the converter resolution as a
parameter. The graph assumes the reference-voltage
temperature coefficient as the only parameter affecting
accuracy.
In reality, the absolute static accuracy of a data convert-
er is dependent on the combination of many parameters
such as integral nonlinearity, differential nonlinearity,
offset error, gain error, as well as voltage-reference
changes.
PIN NAME FUNCTION
1, 3 I.C. Internally Connected. Do not connect externally.
2 GND Ground
4 IN Positive Power-Supply Input
5 OUTF Voltage-Reference Force Output. Connect OUTF to OUTS as close to the device as possible. OUTF
and OUTS do not require a bypass capacitor for stability.
6 OUTS Voltage-Reference Sense Input
Pin Description
MAX6043
Precision High-Voltage Reference in SOT23
______________________________________________________________________________________ 13
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
TEMPERATURE
COEFFICIENT
(ppm/°C)
110 100
16 BIT
14 BIT
12 BIT
10 BIT
8 BIT
0.01
0.1
10
100
1000
1
10,000
18 BIT
20 BIT
OPERATING TEMPERATURE RANGE (TMAX - TMIN) (°C)
MAX6043
Precision High-Voltage Reference in SOT23
14 ______________________________________________________________________________________
Ordering Information (continued)
PART TEMP RANGE PIN-
PACKAGE
TOP
MARK
MAX6043AAUT33-T -40°C to +125°C 6 SOT23-6 ABSA
MAX6043BAUT33-T -40°C to +125°C 6 SOT23-6 ABDS
MAX6043CAUT33-T -40°C to +125°C 6 SOT23-6 ABDT
MAX6043AAUT41-T -40°C to +125°C 6 SOT23-6 ABSB
MAX6043BAUT41-T -40°C to +125°C 6 SOT23-6 ABDU
MAX6043CAUT41-T -40°C to +125°C 6 SOT23-6 ABDV
MAX6043AAUT50-T -40°C to +125°C 6 SOT23-6 ABSC
MAX6043BAUT50-T -40°C to +125°C 6 SOT23-6 ABDW
MAX6043CAUT50-T -40°C to +125°C 6 SOT23-6 ABDX
MAX6043AAUT10-T -40°C to +125°C 6 SOT23-6 ABSD
MAX6043BAUT10-T -40°C to +125°C 6 SOT23-6 ABDY
MAX6043CAUT10-T -40°C to +125°C 6 SOT23-6 ABDZ
Chip Information
TRANSISTOR COUNT: 152
PROCESS: BiCMOS
*INPUT CAPACITOR IS OPTIONAL.
IN
GND
INPUT
SUPPLY
REFERENCE
OUTPUT
(SEE ORDERING
INFORMATION)
0.1µF*
MAX6043
OUTF
OUTS
Typical Operating Circuit
MAX6043
Precision High-Voltage Reference in SOT23
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15
© 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
6LSOT.EPS
F
1
1
21-0058
PACKAGE OUTLINE, SOT-23, 6L
