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19-3036; Rev 1; 5/04
Precision High-Voltage Reference in SOT23
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 voltages. The MAX6043 features a proprietary temperature coefficient curvature-correction circuit and lasertrimmed thin-film resistors that result in a very low temperature 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 320A of supply current and sources 10mA or sinks 0.6mA of load current. The MAX6043 uses bandgap technology for low-noise performance and excellent accuracy. The MAX6043 does not require an output bypass capacitor for stability, and is stable with capacitive loads up to 100F. Eliminating the output bypass capacitor saves valuable board area in space-critical applications. The supply-independent, low supply current makes the MAX6043 ideal for battery-operated, high-performance systems. The MAX6043 is available in a 6-pin SOT23 package and operates over the automotive (-40C to +125C) temperature range.
Features
o +2.5V, +3.3V, +4.096V, +5.0V, or +10V Output Voltages o Excellent Temperature Stability: 15ppm/C (max) o Tight Initial Accuracy: 0.05% (max) o Tiny SOT23 Package o Wide +4.5V to +40V Supply Voltage Range o Low Noise: 4VP-P (typ at 2.5V Output) o Short-Circuit Protected o Wide Operating Temperature Range -40C to +125C o Stable with Capacitive Loads from 0 to 100F o No External Capacitors Required for Stability
MAX6043
Ordering Information
PART MAX6043AAUT25-T MAX6043BAUT25-T MAX6043CAUT25-T TEMP RANGE -40C to +125C -40C to +125C -40C to +125C PINPACKAGE 6 SOT23-6 6 SOT23-6 6 SOT23-6 TOP MARK ABRZ ABDQ ABDR
Ordering Information continued at end of data sheet.
Applications
Analog-to-Digital Converters Digital-to-Analog Converters Digital Voltmeters Voltage Regulators Threshold Detectors
Typical Operating Circuit appears at end of data sheet.
Selector Guide
PART OUTPUT VOLTAGE (V) 2.5 2.5 2.5 3.3 3.3 3.3 4.096 4.096 4.096 5.0 5.0 5.0 10.0 10.0 10.0 TEMPCO (ppm/oC) -40oC to +125oC 15 20 65 15 20 65 15 20 65 15 20 65 15 20 65 INITIAL ACCURACY (%) 0.06 0.1 0.5 0.06 0.1 0.5 0.06 0.1 0.5 0.06 0.1 0.5 0.05 0.1 0.5
MAX6043AAUT25
Pin Configuration
TOP VIEW
MAX6043BAUT25 MAX6043CAUT25 MAX6043AAUT33 MAX6043BAUT33 MAX6043CAUT33
I.C.* 1
6
OUTS
MAX6043AAUT41 MAX6043BAUT41 MAX6043CAUT41 MAX6043AAUT50 MAX6043BAUT50 MAX6043CAUT50 MAX6043AAUT10 MAX6043BAUT10 MAX6043CAUT10
GND 2
MAX6043
5
OUTF
I.C.* 3
4
IN
SOT23-6
*INTERNALLY CONNECTED. DO NOT CONNECT.
________________________________________________________________ Maxim Integrated Products
1
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Precision High-Voltage Reference in SOT23 MAX6043
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +42V OUTF, OUTS to GND ...................................-0.3V to (VIN + 0.3V) Continuous Power Dissipation (TA = +70C) 6-Pin SOT23 (derate 9.1mW/C above +70C)............727mW OUT_ Short-Circuit Duration .....................................................5s Operating Temperature Range .........................-40C to +125C Storage Temperature Range .............................-65C to +150C Junction Temperature Range ............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
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.
ELECTRICAL CHARACTERISTICS--VOUT = +2.5V
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX. Typical values are at TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER OUTPUT MAX6043A (0.06%) Output Voltage IOUT = 0, TA = +25C MAX6043B (0.1%) MAX6043C (0.5%) MAX6043A_25 Output-Voltage Temperature Coefficient (Note 2) TA = -40C to +125C MAX6043B_25 MAX6043C_25 Line Regulation (Note 4) 4.5V < VIN < 40V Sourcing, 0 < IOUT < 10mA Sinking, -0.6mA < IOUT < 0mA OUT Short-Circuit Current Thermal Hysteresis Long-Term Stability DYNAMIC CHARACTERISTICS Output Noise Voltage Turn-On Settling Time INPUT Supply Voltage Range Quiescent Supply Current Inferred from line regulation test IOUT = 0 TA = +25C TA = -40C to +125C 4.5 320 370 40.0 490 650 V A 0.1Hz to 10Hz 10Hz to 1kHz To VOUT = 0.05% of final value, COUT = 50pF 4 7 150 VP-P VRMS s Output shorted to GND Output shorted to IN (Note 3) t = 1000hr TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C 60 -2 150 150 70 2.4985 2.4975 2.4876 2.5000 2.5000 2.5000 3 5 10 1 1.5 8 2.5015 2.5025 2.5125 15 25 65 6 10 70 70 900 900 mA ppm ppm ppm/mA ppm/V ppm/C V CONDITIONS MIN TYP MAX UNITS
Load Regulation (Note 4)
2
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Precision High-Voltage Reference in SOT23
ELECTRICAL CHARACTERISTICS--VOUT = +3.3V
(VIN = +10V, IOUT = 0, TA = TMIN to TMAX. Typical values are at TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER OUTPUT MAX6043A (0.06%) Output Voltage IOUT = 0, TA = +25C MAX6043B (0.1%) MAX6043C (0.5%) MAX6043A_33 Output-Voltage Temperature Coefficient (Note 2) TA = -40C to +125C MAX6043B_33 MAX6043C_33 Line Regulation (Note 4) 5.3V VIN 40V Sourcing, 0 IOUT 10mA Sinking, -0.6mA IOUT 0mA OUT Short-Circuit Current Thermal Hysteresis Long-Term Stability DYNAMIC CHARACTERISTICS Output Noise Voltage Turn-On Settling Time INPUT Supply Voltage Range Quiescent Supply Current Inferred from line regulation test IOUT = 0 TA = +25C TA = -40C to +125C 5.3 320 380 40.0 490 650 V A 0.1Hz to 10Hz 10Hz to 1kHz To VOUT = 0.05% of final value, COUT = 50pF 5.3 9.5 180 VP-P VRMS s OUT shorted to GND OUT shorted to IN (Note 3) t = 1000hr TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C 60 -2 150 150 100 3.2980 3.2967 3.2836 3.3000 3.3000 3.3000 3 5 10 1 1.5 23 3.3020 3.3033 3.3165 15 25 65 6 10 70 70 900 900 mA ppm ppm ppm/mA ppm/V ppm/C V CONDITIONS MIN TYP MAX UNITS
MAX6043
Load Regulation (Note 4)
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3
Precision High-Voltage Reference in SOT23 MAX6043
ELECTRICAL CHARACTERISTICS--VOUT = +4.096V
(VIN = +10V, IOUT = 0, TA = TMIN to TMAX. Typical values are at TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER OUTPUT MAX6043A (0.06%) Output Voltage IOUT = 0, TA = +25C MAX6043B (0.1%) MAX6043C (0.5%) MAX6043A_41 Output-Voltage Temperature Coefficient (Note 2) Line Regulation (Note 4) TA = -40C to +125C MAX6043B_41 MAX6043C_41 6.1V VIN 40V Sourcing, 0 IOUT 10mA Sinking, -0.6mA IOUT 0mA OUT Short-Circuit Current Thermal Hysteresis Long-Term Stability DYNAMIC CHARACTERISTICS Output Noise Voltage Turn-On Settling Time INPUT Supply Voltage Range Quiescent Supply Current Inferred from line regulation test IOUT = 0 TA = +25C TA = -40C to +125C 6.1 320 380 40.0 490 650 V A 0.1Hz to 10Hz 10Hz to 1kHz To VOUT = 0.05% of final value, COUT = 50pF 6.6 12 200 VP-P VRMS s OUT shorted to GND OUT shorted to IN (Note 3) t = 1000hr TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C 60 -2 150 150 100 4.0935 4.0919 4.0755 4.0960 4.0960 4.0960 3 5 10 1 1.5 19 4.0985 4.1001 4.1165 15 25 65 6 10 70 70 900 900 mA ppm ppm ppm/mA ppm/V ppm/C V CONDITIONS MIN TYP MAX UNITS
Load Regulation (Note 4)
4
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Precision High-Voltage Reference in SOT23
ELECTRICAL CHARACTERISTICS--VOUT = +5.0V
(VIN = +15V, IOUT = 0, TA = TMIN to TMAX. Typical values are at TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER OUTPUT MAX6043A (0.06%) Output Voltage IOUT = 0, TA = +25C MAX6043B (0.1%) MAX6043C (0.5%) MAX6043A_50 Output-Voltage Temperature Coefficient (Note 2) TA = -40C to +125C MAX6043B_50 MAX6043C_50 Line Regulation (Note 4) 7V VIN 40V Sourcing, 0 IOUT 10mA Sinking, -0.6mA IOUT 0mA OUT Short-Circuit Current Thermal Hysteresis Long-Term Stability DYNAMIC CHARACTERISTICS Output Noise Voltage Turn-On Settling Time INPUT Supply Voltage Range Quiescent Supply Current Inferred from line regulation test IOUT = 0 TA = +25C TA = -40C to +125C 7.0 320 380 40.0 490 650 V A 0.1Hz to 10Hz 10Hz to 1kHz To VOUT = 0.05% of final value, COUT = 50pF 9.5 15 230 VP-P VRMS s OUT shorted to GND OUT shorted to IN (Note 3) t = 1000hr TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C 60 -2 150 150 130 4.9970 4.9950 4.9751 5.0000 5.0000 5.0000 3 5 10 1 1.5 32 5.0030 5.0050 5.0250 15 25 65 6 10 70 70 900 900 mA ppm ppm ppm/mA ppm/V ppm/C V CONDITIONS MIN TYP MAX UNITS
MAX6043
Load Regulation (Note 4)
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5
Precision High-Voltage Reference in SOT23 MAX6043
ELECTRICAL CHARACTERISTICS--VOUT = +10.0V
(VIN = +15V, IOUT = 0, TA = TMIN to TMAX. Typical values are at TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER OUTPUT MAX6043A (0.05%) Output Voltage IOUT = 0, TA = +25C MAX6043B (0.1%) MAX6043C (0.5%) Output-Voltage Temperature Coefficient (Note 2) Line Regulation (Note 4) MAX6043A_10 TA = -40C to +125C MAX6043B_10 MAX6043C_10 12V VIN 40V Sourcing, 0 IOUT 10mA Sinking, -0.6mA IOUT 0mA OUT Short-Circuit Current Thermal Hysteresis Long-Term Stability DYNAMIC CHARACTERISTICS Output Noise Voltage Turn-On Settling Time INPUT Supply Voltage Range Quiescent Supply Current Inferred from line regulation test IOUT = 0 TA = +25C TA = -40C to +125C 12.0 320 390 40.0 490 650 V A 0.1Hz to 10Hz 10Hz to 1kHz To VOUT = 0.05% of final value, COUT = 50pF 19 30 390 VP-P VRMS s OUT shorted to GND OUT shorted to IN (Note 3) t = 1000hr TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C TA = +25C TA = -40C to +125C 60 -2 150 150 170 9.9950 9.9900 9.9500 10.0000 10.0000 10.0000 3 5 10 1 1.5 16 10.0050 10.0100 10.0500 15 25 65 6 10 70 70 900 900 mA ppm ppm ppm/mA ppm/V ppm/C V CONDITIONS MIN TYP MAX UNITS
Load Regulation (Note 4)
Note 1: Note 2: Note 3: Note 4:
All devices are 100% production tested at TA = +25C and guaranteed by design over TA = TMIN to TMAX as specified. Temperature coefficient is defined as VOUT divided by the temperature range. Thermal hysteresis defined as the change in output voltage at TA = +25C before and after cycling the device from TMAX to TMIN. Line and load regulation do not include the effect of self heating.
6
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Precision High-Voltage Reference in SOT23
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 = +25C, unless otherwise noted.)
OUTPUT VOLTAGE vs. TEMPERATURE (VOUT = 2.5V)
MAX6043 toc01
MAX6043
OUTPUT VOLTAGE vs. TEMPERATURE (VOUT = 10V)
10.005 10.004 10.003 10.002 10.001 10.000 9.999 9.998 9.997 9.996 9.995 9.994 9.993 9.992 9.991 9.990
MAX6043 toc02
LOAD REGULATION (SOURCING, VOUT = 10V)
2 0 VOUT (mV) -2 -4 -6 -8 -10 -12 -14 TA = +125C TA = +85C 0 10 20 30 40 50 60 70 TA = +25C TA = -40C
MAX6043 toc03
2.5020 THREE TYPICAL UNITS 2.5015 OUTPUT VOLTAGE (V) 2.5010 2.5005 2.5000 2.4995 2.4990 2.4985 2.4980
THREE TYPICAL UNITS
4
OUTPUT VOLTAGE (V)
-40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C)
-40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C)
OUTPUT CURRENT (mA)
LOAD REGULATION (SOURCING, VOUT = 2.5V)
MAX6043 toc04
LOAD REGULATION (SINKING, VOUT = 10V)
TA = +25C 20 15 VOUT (mV) TA = -40C VOUT (mV)
MAX6043 toc05
LOAD REGULATION (SINKING, VOUT = 2.5V)
1.5 1.0 0.5 0 -0.5 -1.0 TA = +85C TA = +125C TA = -40C TA = +25C
MAX6043 toc06
2.0 1.5 1.0 VOUT (mV) 0.5 0 -0.5 -1.0 -1.5 -2.0 0 10 20 30 40 50 60 TA = +125C TA = +85C TA = -40C TA = +25C
25
2.0
10 5 0 -5 -10 TA = +125C -15 TA = +85C
-1.5 -2.0 -3.0
70
-4
-3
-2
-1
0
-2.5
-2.0
-1.5
-1.0
-0.5
0
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
LINE REGULATION (VOUT = 2.5V)
MAX6043 toc07
LINE REGULATION (VOUT = 10V)
MAX6043 toc08
MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. LOAD CURRENT (VOUT = 2.5V)
MINIMUM INPUT-OUTPUT DIFFERENTIAL (V) VOUT / VOUT = 0.1% TA = -40C TA = +25C TA = +85C TA = +125C
MAX6043 toc09
0.1750 0.1500 0.1250 VOUT (mV) 0.1000 0.0750 0.0500 0.0250 0 -0.0250 -0.0500 4 8 12 16 20 24 28 32 36 TA = +25C TA = -40C TA = +85C TA = +125C
0.500 0.400 0.300 VOUT (mV) 0.200 0.100 0 TA = +85C -0.100 -0.200 TA = +25C TA = +125C TA = -40C
3.0 2.5 2.0 1.5 1.0 0.5 0
40
12
16
20
24
28
32
36
40
0
20
40 LOAD CURRENT (mA)
60
80
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
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7
Precision High-Voltage Reference in SOT23 MAX6043
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 = +25C, unless otherwise noted.)
MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. LOAD CURRENT (VOUT = 10V)
MINIMUM INPUT-OUTPUT DIFFERENTIAL (V) VOUT / VOUT = 0.1% TA = -40C
MAX6043 toc10
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (VOUT = 2.5V)
MAX6043 toc11
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (VOUT = 10V)
MAX6043 toc12
3.0 2.5 2.0
0 -20 -40 PSRR (dB)
0 -20 -40 PSRR (dB) -60 -80 -100 -120
TA = +25C 1.5 1.0 0.5 0 0 20 40 60 LOAD CURRENT (mA) TA = +85C TA = +125C
-60 -80 -100 -120 0.1 1 10 FREQUENCY (kHz) 100 1000
0.1
1
10 FREQUENCY (kHz)
100
1000
OUTPUT IMPEDANCE vs. FREQUENCY
MAX6043 toc13
SUPPLY CURRENT vs. INPUT VOLTAGE (VOUT = 2.5V)
MAX6043 toc14
SUPPLY CURRENT vs. INPUT VOLTAGE (VOUT = 10V)
400 360 SUPPLY CURRENT (A) 320 280 240 200 160 120 80 40 0 TA = +25C TA = -40C TA = +125C TA = +85C
MAX6043 toc15
100
480 440 400 360 320 280 240 200 160 120 80 40 0 TA = -40C TA = +25C TA = +125C TA = +85C
440
OUTPUT IMPEDANCE ()
1
0.1
0.01 0.1 1 10 FREQUENCY (kHz) 100 1000
SUPPLY CURRENT (A)
10
0
4
8
12 16 20 24 28 32 36 40 INPUT VOLTAGE (V)
0
4
8
12 16 20 24 28 32 36 40 INPUT VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE (VOUT = 2.5V)
MAX6043 toc16
SUPPLY CURRENT vs. TEMPERATURE (VOUT = 10V)
MAX6043 toc17
OUTPUT NOISE-VOLTAGE DENSITY vs. FREQUENCY
OUTPUT NOISE-VOLTAGE DENSITY (nV/Hz)
MAX6043 toc18
440 420 400 SUPPLY CURRENT (A) 380 360 340 320 300 280 260 240
VIN = 5V
440 420 400 SUPPLY CURRENT (A) 380 360 340 320 300 280 260 240 VIN = 15V
10,000
1000
VOUT = 10V
VOUT = 2.5V
-40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C)
-40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C)
100 0.1 1 10 FREQUENCY (Hz) 100 1000
8
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Precision High-Voltage Reference in SOT23
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 = +25C, unless otherwise noted.)
0.1Hz TO 10Hz OUTPUT NOISE (VOUT = 2.5V) 0.1Hz TO 10Hz OUTPUT NOISE (VOUT = 10V)
MAX6043
MAX6043 toc19
MAX6043 toc20
VOUT AC-COUPLED 1V/div
VOUT AC-COUPLED 4V/div
1s/div
1s/div
LOAD TRANSIENT (VOUT = 2.5V)
VIN = 5V COUT = 0F 2.5V
MAX6043 toc21
LOAD TRANSIENT (VOUT = 10V)
VIN = 15V COUT = 0F 10V
MAX6043 toc22
VOUT 50mV/div AC-COUPLED
VOUT 200mV/div AC-COUPLED
20mA IOUT 10mA/div 0
20mA IOUT 10mA/div 0 100s/div
100s/div
LOAD TRANSIENT (VOUT = 2.5V)
VIN = 5V COUT = 1F 2.5V
MAX6043 toc23
LOAD TRANSIENT (VOUT = 10V)
MAX6043 toc24
VIN = 15V COUT = 1F VOUT 50mV/div AC-COUPLED 10V VOUT 100mV/div AC-COUPLED
20mA IOUT 10mA/div 0
20mA IOUT 10mA/div 0
100s/div
100s/div
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9
Precision High-Voltage Reference in SOT23 MAX6043
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 = +25C, unless otherwise noted.)
LOAD TRANSIENT (VOUT = 2.5V)
VIN = 5V COUT = 0F VOUT 50mV/div AC-COUPLED
MAX6043 toc25
LOAD TRANSIENT (VOUT = 10V)
VIN = 15V COUT = 0F
MAX6043 toc26
2.5V
10V
VOUT 100mV/div AC-COUPLED
0 -2mA 200s/div
IOUT 2mA/div
0 -2mA 400s/div
IOUT 2mA/div
LOAD TRANSIENT (VOUT = 2.5V)
VIN = 5V COUT = 1F
LOAD TRANSIENT (VOUT = 10V)
MAX6043 toc27
LINE TRANSIENT (VOUT = 2.5V)
MAX6043 toc28
MAX6043 toc29
VIN = 15V COUT = 1F 10V VOUT 20mV/div AC-COUPLED VOUT 50mV/div AC-COUPLED
2.5V
5.5V VIN AC-COUPLED 500mV/div 4.5V
0 -2mA 200s/div
IOUT 2mA/div
0 -2mA 400s/div
IOUT 2mA/div
VOUT AC-COUPLED 10mV/div
10s/div
LINE TRANSIENT (VOUT = 10V)
MAX6043 toc30
TURN-ON TRANSIENT (VOUT = 2.5V)
COUT = 0F 15.5V VIN AC-COUPLED 500mV/div 14.5V 5V
MAX6043 toc31
TURN-ON TRANSIENT (VOUT = 10V)
COUT = 0F VIN 2V/div 15V
MAX6043 toc32
VIN 5V/div
0V VOUT 2.5V AC-COUPLED 10mV/div VOUT 1V/div 0V
0V 10V VOUT 5V/div 0V
10s/div
4s/div
40s/div
10
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Precision High-Voltage Reference in SOT23
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 = +25C, unless otherwise noted.)
TURN-ON TRANSIENT (VOUT = 2.5V)
COUT = 1F 5V VIN 2V/div
MAX6043
TURN-ON TRANSIENT (VOUT = 10V)
MAX6043 toc33
MAX6043 toc34
TURN-OFF TRANSIENT (VOUT = 2.5V)
COUT = 0F VIN 5V/div 5V
MAX6043 toc35
COUT = 1F 15V
VIN 2V/div
0V 2.5V VOUT 1V/div 0V
0V 10V VOUT 5V/div 0V
0V 2.5V VOUT 1V/div 0V
40s/div
40s/div
1s/div
TURN-OFF TRANSIENT (VOUT = 10V)
COUT = 0F 15V
TURN-OFF TRANSIENT (VOUT = 2.5V)
MAX6043 toc36
TURN-OFF TRANSIENT
MAX6043 toc37 MAX6043 toc38
COUT = 1F 15V 5V VIN 5V/div VIN 2V/div 0V 10V VOUT 5V/div VOUT 1V/div 0V 0V
COUT = 1F VIN 5V/div
0V 10V
0V 2.5V
VOUT 5V/div
0V
2s/div
20ms/div
40ms/div
LONG-TERM DRIFT (VOUT = 2.5V)
MAX6043 toc39
LONG-TERM DRIFT (VOUT = 10V)
125 OUTPUT VOLTAGE (ppm) 100 75 50 25 0 -25 -50 -75 -100 -125 -150 0 200 400 600 800 1000
XMAX6043 toc40
150 125 100 75 50 25 0 -25 -50 -75 -100 -125 -150 0 200 400 600 800
150
OUTPUT VOLTAGE (ppm)
1000
TIME (hr)
TIME (hr)
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11
Precision High-Voltage Reference in SOT23 MAX6043
Pin Description
PIN 1, 3 2 4 5 6 NAME I.C. GND IN OUTF OUTS FUNCTION Internally Connected. Do not connect externally. Ground Positive Power-Supply Input 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. Voltage-Reference Sense Input
Applications Information
Bypassing/Output Capacitance
For the best line-transient performance, decouple the input with a 0.1F 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 100F. In applications where the load or the supply can experience 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.
Turn-On Time
The MAX6043 typically turns on and settles to within 0.05% of the preset output voltage in 150s.
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 temperature 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 converter is dependent on the combination of many parameters such as integral nonlinearity, differential nonlinearity, offset error, gain error, as well as voltage-reference changes.
Supply Current
The MAX6043 consumes 320A of quiescent supply current. This improved efficiency reduces power dissipation and extends battery life.
Thermal Hysteresis
Thermal hysteresis is the change in the output voltage at TA = +25C 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 thermal hysteresis value is 150ppm.
12
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Precision High-Voltage Reference in SOT23 MAX6043
10,000 1000 100 TEMPERATURE COEFFICIENT (ppm/C) 8 BIT 10 1 0.1 0.01 1 10 OPERATING TEMPERATURE RANGE (TMAX - TMIN) (C) 10 BIT 12 BIT 14 BIT 16 BIT 18 BIT 20 BIT 100
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
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13
Precision High-Voltage Reference in SOT23 MAX6043
Ordering Information (continued)
PART MAX6043AAUT33-T MAX6043BAUT33-T MAX6043CAUT33-T MAX6043AAUT41-T MAX6043BAUT41-T MAX6043CAUT41-T MAX6043AAUT50-T MAX6043BAUT50-T MAX6043CAUT50-T MAX6043AAUT10-T MAX6043BAUT10-T MAX6043CAUT10-T TEMP RANGE -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C PINPACKAGE 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 6 SOT23-6 TOP MARK ABSA ABDS ABDT ABSB ABDU ABDV ABSC ABDW ABDX ABSD ABDY ABDZ
0.1F* GND INPUT SUPPLY IN OUTF OUTS REFERENCE OUTPUT (SEE ORDERING INFORMATION)
Typical Operating Circuit
MAX6043
*INPUT CAPACITOR IS OPTIONAL.
Chip Information
TRANSISTOR COUNT: 152 PROCESS: BiCMOS
14
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Precision High-Voltage Reference in SOT23
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
MAX6043
PACKAGE OUTLINE, SOT-23, 6L
21-0058
F
1 1
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 (c) 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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