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19-1730; Rev 0; 8/00
1A SOT23 Precision Shunt Voltage Reference
General Description
The MAX6006-MAX6009 ultra-low-power shunt references are ideal for space-critical and low-power applications. They are offered in 3-pin SOT23 packages, and the minimum operating current is guaranteed to be <1A. The devices feature low temperature coefficients of <30ppm/C and initial accuracy of better than 0.2%. Available in +1.25V, +2.048V, +2.5V, and 3V output voltages, the MAX6006-MAX6009 have references of +1.25V, +2.048V, +2.5V, and +3.0V, respectively. The devices can be used as lower-power, higher-precision upgrades to the ICL8069, LM385, LT1004, and LM4040 references. The MAX6006-MAX6009 are available in two grades: A and B. The A grade features a temperature coefficient of 30ppm/C over the extended temperature range of -40C to +85C, with an initial accuracy of 0.2%. Grade B features a temperature coefficient of 75ppm/C with an initial accuracy of 0.5%. MAX6006 in+1.25V and MAX6008 in +2.5V are offered in 8-pin SOIC packages, as plug in upgrades for LT1004 and LM285. o Small 3-Pin SOT23 Package o Initial Voltage Accuracy: 0.2% o Temperature Coefficient: 30ppm/C max o Temperature Range: -40C to +85C o Factory-Trimmed Output Voltages: +1.25V, +2.048V, +2.5V, +3.0V o Wide Operating Range: 1A to 2mA
Features
o Ultra-Low Operating Current: Guaranteed <1A
MAX6006-MAX6009
Selector Guide
PART MAX6006A OUTPUT VOLTAGE (V) 1.25 1.25 2.048 2.048 2.5 2.5 3.0 3.0 INITIAL TEMPERATURE ACCURACY COEFFICIENT (%) (ppm/C) 0.2 0.5 0.2 0.5 0.2 0.5 0.2 0.5 30 75 30 75 30 75 30 75
________________________Applications
Battery-Powered Equipment Portable Meters Precision Regulators A/D and D/A Converters
MAX6006B MAX6007A MAX6007B MAX6008A MAX6008B MAX6009A MAX6009B
Ordering Information appears at end of data sheet
Typical Operating Circuit
VS
Pin Configuration
TOP VIEW MAX6006 MAX6007 MAX6008 MAX6009
IRMIN + IL
RBIAS IL VR IRMIN VOUT
OUT 1 3 GND 2 I.C.
N.C. N.C. N.C.
1 2 3
8 7 6 5
OUT N.C. OUT N.C.
MAX6006 MAX6007 MAX6008 MAX6009
V -V RBIAS = S R IL + IRMIN
0.01F
GND 4
SOT23-3 SO 1
________________________________________________________________ Maxim Integrated Products
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1A SOT23 Precision Shunt Voltage Reference MAX6006-MAX6009
ABSOLUTE MAXIMUM RATINGS
Operating Current (OUT to GND) ......................................20mA Forward Current (GND to OUT) ..........................................20mA Continuous Power Dissipation (TA = +70C) 3-Pin SOT23 (derate 4mW/C above +70C) ..............320mW 8-Pin SO (derate 5.48mW/C above +70C)...............471mW Operating Temperature Range ...........................-40C to +85C Storage 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--MAX6006
(TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER Reverse Breakdown Voltage Minimum Operating Current Reverse Breakdown Change with Current Reverse Dynamic Impedance Low-Frequency Noise Temperature Coefficient (Note 3) Long-Term Drift Thermal Hysteresis (Note 4) TC SYMBOL VR IRMIN TA = +25C, IR = 1.2A IR = 1.2A to 200A IR = 200A to 2mA IR = 1.2A to 2mA (Note 2) IR = 1.2A, f = 0.1Hz to 10Hz IR = 1.2A 1000h at TA = +25C MAX6006A MAX6006B 150 200 30 30 75 CONDITIONS MAX6006A (0.2%) MAX6006B (0.5%) MIN 1.2475 1.2438 TYP 1.2500 1.2500 0.5 MAX 1.2525 1.2563 1.0 1.0 2.0 1.5 UNITS V A mV Vp-p ppm/C ppm ppm
VR change <0.2% from VR at IR = 1.2A
2
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1A SOT23 Precision Shunt Voltage Reference
ELECTRICAL CHARACTERISTICS--MAX6007
(TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER Reverse Breakdown Voltage Minimum Operating Current Reverse Breakdown Change with Current Reverse Dynamic Impedance Low-Frequency Noise Temperature Coefficient (Note 3) Long-Term Drift Thermal Hysteresis (Note 4) TC SYMBOL VR IRMIN TA = +25C, IR = 1.2A IR = 1.2A to 200A IR = 200A to 2mA IR = 1.2A to 2mA (Note 2) IR = 1.2A, f = 0.1Hz to 10Hz IR = 1.2A 1000h at TA = +25C MAX6007A MAX6007B 150 200 50 30 75 CONDITIONS MAX6007A (0.2%) MAX6007B (0.5%) MIN 2.0439 2.0378 TYP 2.048 2.048 0.5 MAX 2.0521 2.0582 1.0 1.3 2.3 1.8 UNITS V A mV Vp-p ppm/C ppm ppm
MAX6006-MAX6009
VR change <0.2% from VR at IR = 1.2A
ELECTRICAL CHARACTERISTICS--MAX6008
(TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER Reverse Breakdown Voltage Minimum Operating Current Reverse Breakdown Change with Current Reverse Dynamic Impedance Low-Frequency Noise Temperature Coefficient (Note 3) Long-Term Drift Thermal Hysteresis (Note 4) TC SYMBOL VR IRMIN TA = +25C, IR = 1.2A CONDITIONS MAX6008A (0.2%) MAX6008B (0.5%) MIN 2.4950 2.4875 TYP 2.5000 2.5000 0.5 MAX 2.5050 2.5125 1.0 1.5 2.5 2 60 30 75 150 200 UNITS V A mV Vp-p ppm/C ppm ppm
VR change <0.2% from VR at IR = 1.2A IR = 1.2A to 200A IR = 200A to 2mA IR = 1.2A to 2mA (Note 2) IR = 1.2A, f = 0.1Hz to 10Hz IR = 1.2A 1000h at TA = +25C MAX6008A MAX6008B
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3
1A SOT23 Precision Shunt Voltage Reference MAX6006-MAX6009
ELECTRICAL CHARACTERISTICS--MAX6009
(TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER Reverse Breakdown Voltage Minimum Operating Current Reverse Breakdown Change with Current Reverse Dynamic Impedance Low-Frequency Noise Temperature Coefficient (Note 3) Long-Term Drift Thermal Hysteresis (Note 4) TC SYMBOL VR IRMIN TA = +25C, IR = 1.2A IR = 1.2A to 200A IR = 200A to 2mA IR = 1.2A to 2mA (Note 2) IR = 1.2A, f = 0.1Hz to 10Hz IR = 1.2A 1000h at TA = +25C MAX6009A MAX6009B 150 200 75 30 75 CONDITIONS MAX6009A (0.2%) MAX6009B (0.5%) MIN 2.9940 2.9850 TYP 3.000 3.000 0.5 MAX 3.0060 3.0150 1.0 1.7 2.7 2.2 UNITS V A mV Vp-p ppm/C ppm ppm
VR change <0.2% from VR at IR = 1.2A
Note 1: Note 2: Note 3: Note 4:
All devices are 100% production tested at TA = +25C and are guaranteed by design for TA = TMIN to TMAX, as specified. This parameter is guaranteed by the "reverse breakdown change with current" test. TC is measured by the "box" method; i.e., (VMAX - VMIN) / (TMAX - TMIN). Thermal hysteresis is defined as the change in the +25C output voltage after cycling the device from TMIN to TMAX .
Typical Operating Characteristics
(CL = 0.01F, TA = +25C, unless otherwise noted.)
MAX6006 VOUT vs. CURRENT
MAX6006/9-01
MAX6006/9-02
TEMPERATURE DRIFT
0.5 REFERENCE VOLTAGE CHANGE (mV) 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -50 0 50 100 TEMPERATURE (C) IR = 1.2A VOUT = 2.5V 2.5
REVERSE VOLTAGE CHANGE (mV)
MAX6006 STARTUP
1.5V
MAX6006/9-03
2.0
1.5 0 1.0 TA = +85C TA = -40C TA = +25C 0.001 0.01 0.1 1 10 20ms/div 1.2A
0.5
0
REVERSE CURRENT (mA)
4
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1A SOT23 Precision Shunt Voltage Reference
Typical Operating Characteristics (continued)
(CL = 0.01F, TA = +25C, unless otherwise noted.)
MAX6006 0.01Hz TO 10Hz NOISE
MAX6006/9-04
MAX6006-MAX6009
MAX6006 OUTPUT IMPEDANCE vs. FREQUENCY
MAX6006/9-05
MAX6009 VOUT vs. CURRENT
MAX6006/9-06
1000 IR = 6A, IR = 1.2A
2.5 REVERSE VOLTAGE CHANGE (mV)
NOISE VOLTAGE (20/div)
2.0
IMPEDANCE ()
100
1.5
1.2A
1.0 TA = -40C TA = +25C 0.5 TA = +85C 0.001 0.01 0.1 1 10
10
1 TIME (2s/div) 0.01 0.1 1 10 100 1000 FREQUENCY (kHz)
0 REVERSE CURRENT (mA)
MAX6009 STARTUP
MAX6006/9-07
MAX6009 0.01Hz TO 10Hz NOISE
MAX6006/9-08
MAX6009 OUTPUT IMPEDANCE vs. FREQUENCY
IR = 6A, IR = 1.2A
MAX6006/9-09
1000
3V
NOISE VOLTAGE (20V/div)
0 1.2A
IMPEDANCE ()
100
10
1 20ms/div TIME (2s/div) 0.01 0.1 1 10 100 1000 FREQUENCY (kHz)
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5
1A SOT23 Precision Shunt Voltage Reference MAX6006-MAX6009
Pin Description
PIN SOT23 1 2 3 -- SO 6, 8 4 -- 1, 2, 3, 5, 7 OUT GND IC N.C. NAME FUNCTION Output Voltage. Bias OUT with a pullup resistor to a potential greater than OUT. Bypass OUT to GND with a 0.01F or larger capacitor. Ground Internally connected test point. Leave this pin unconnected, or connect to GND. No connection. Not internally connected.
Detailed Description
The MAX6006-MAX6009 are precision, two-terminal, series bandgap voltage references. On-chip thin-film resistors are laser trimmed to provide 0.2% output voltage accuracies. Voltages of +1.25V, +2.048V,+2.5V, and +3.0V are available in the space-saving SOT23 package (2.1mm 2.7mm).
Typical Applications
In the typical shunt regulator application shown in Figure 1, RBIAS is used to set the current through the load (IL) and the current through the shunt regulator (IRMIN). There are two worst-case situations that RBIAS needs to be sized for: 1) RBIAS must be small enough that when VS (supply voltage) is at its minimum and IL is at its maximum, IRMIN is equal to at least the minimum operating current of the shunt regulator. 2) RBIAS must be large enough that when VS is at its maximum and IL is at its minimum, IRMIN is <2mA.
VS
Applications Information
Output/Load Capacitance
For devices in this family, OUT needs to be bypassed to GND with a 0.01F or larger capacitor. In applications where the load or the supply can experience step changes, additional capacitance will reduce the amount of overshoot (or undershoot) and assist the circuit's transient response.
Output Voltage Hysteresis
Output voltage 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 temperature hysteresis value is typically less than 200ppm.
IRMIN + IL
RBIAS IL VR IRMIN VOUT
Turn-On Time
The output capacitance and bias current of the MAX6006-MAX6009 greatly affects turn-on settling time. In the Typical Operating Characteristics, turn-on time is shown with a 10nF output capacitor and a 1.2A bias current. Under these conditions, the MAX6006- MAX6009 settle in 40ms. Settling time will linearly decrease in proportion to the circuit's bias current.
MAX6006 MAX6007 MAX6008 MAX6009
V -V RBIAS = S R IL + IRMIN
Figure 1. Typical Application Circuit
6
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1A SOT23 Precision Shunt Voltage Reference MAX6006-MAX6009
MAX6008
+10V MAX6008
R1 200k
4
R1 200k 5 1
4
5 1
3
MAX4162EUK 2
3
MAX4162EUK 2
IOUT -1.0V TO -7V IOUT = 2.5V R2 -10V
R2 +1.0V TO +7V
IOUT
R2
Figure 2. Precision 1A to 1mA Current Sources
Ordering Information
PART MAX6006AEUR-T MAX6006AESA MAX6006BEUR-T MAX6006BESA MAX6007AEUR-T MAX6007BEUR-T MAX6008AEUR-T MAX6008AESA MAX6008BEUR-T MAX6008BESA MAX6009AEUR-T MAX6009BEUR-T TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PINPACKAGE 3 SOT23 8 SO 3 SOT23 8 SO 3 SOT23 3 SOT23 3 SOT23 8 SO 3 SOT23 8 SO 3 SOT23 3 SOT23 TOP MARK FZGH -- FZGI -- FZGK FZGL FZGN -- FZGO -- FZGQ FZGR
Chip Information
TRANSISTOR COUNT: 60 PROCESS: BiCMOS
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1A SOT23 Precision Shunt Voltage Reference MAX6006-MAX6009
Package Information
SOTPO3L.EPS
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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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