MAX6006–MAX6009 1µA 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 < 1µA. 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 -40°C to +85°C, 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 SO packages, as plug in upgrades for LT1004 and LM285. Features o Ultra-Low Operating Current: Guaranteed < 1µA o Small 3-Pin SOT23 Package o Initial Voltage Accuracy: 0.2% o Temperature Coefficient: 30ppm/°C max o Temperature Range: -40°C to +85°C o Factory-Trimmed Output Voltages: +1.25V, +2.048V, +2.5V, +3.0V o Wide Operating Range: 1µA to 2mA Applications Battery-Powered Equipment Portable Meters Precision Regulators A/D and D/A Converters Ordering Information OUTPUT VOLTAGE (V) INITIAL ACCURACY (%) TEMP COEFFICIENT (ppm/°C) PIN-PACKAGE TOP MARK MAX6006AEUR+T 1.25 0.2 30 3 SOT23 +FZGH MAX6006AESA+ 1.25 0.2 30 8 SO — MAX6006BEUR+T 1.25 0.5 75 3 SOT23 +FZGI MAX6006BESA+ 1.25 0.5 75 8 SO — MAX6007AEUR+T 2.048 0.2 30 3 SOT23 +FZGK MAX6007AESA+ 2.048 0.2 +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Ordering Information continued at end of data sheet. 30 8 SO — PART Typical Operating Circuit Pin Configurations VS MAX6006 MAX6007 MAX6008 MAX6009 TOP VIEW IRMIN + IL RBIAS IL VR + VOUT + OUT 1 IRMIN MAX6006 MAX6007 MAX6008 MAX6009 V -V RBIAS = S R IL + IRMIN 3 0.01µF GND 2 I.C. N.C. 1 8 OUT N.C. 2 7 N.C. N.C. 3 6 OUT GND 4 5 N.C. SOT23 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. SO 19-1730; Rev 1; 7/12 MAX6006–MAX6009 1µA SOT23 Precision Shunt Voltage Reference ABSOLUTE MAXIMUM RATINGS Operating Current (OUT to GND) ......................................20mA Forward Current (GND to OUT) ..........................................20mA Continuous Power Dissipation (TA = +70°C) 3-Pin SOT23 (derate 4mW/°C above +70°C) ..............320mW 8-Pin SO (derate 5.48mW/°C above +70°C)...............471mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C 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 = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Reverse Breakdown Voltage VR Minimum Operating Current IRMIN CONDITIONS TA = +25°C, IR = 1.2µA MIN TYP MAX MAX6006A (0.2%) 1.2475 1.2500 1.2525 MAX6006B (0.5%) 1.2438 1.2500 1.2563 0.5 1.0 VR change < 0.2% from VR at IR = 1.2µA Reverse Breakdown Change with Current IR = 1.2µA to 200µA 1.0 IR = 200µA to 2mA 2.0 Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) 1.5 Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz Temperature Coefficient (Note 3) Long-Term Drift Thermal Hysteresis (Note 4) 2 TC IR = 1.2µA 1000h at TA = +25°C UNITS V µA mV Ω µVP-P 30 MAX6006A 30 MAX6006B 75 ppm/°C 150 ppm 200 ppm Maxim Integrated MAX6006–MAX6009 1µA SOT23 Precision Shunt Voltage Reference ELECTRICAL CHARACTERISTICS—MAX6007 (TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Reverse Breakdown Voltage VR Minimum Operating Current IRMIN CONDITIONS TA = +25°C, IR = 1.2µA MIN TYP MAX MAX6007A (0.2%) 2.0439 2.048 2.0521 MAX6007B (0.5%) 2.0378 2.048 2.0582 0.5 1.0 VR change < 0.2% from VR at IR = 1.2µA Reverse Breakdown Change with Current IR = 1.2µA to 200µA 1.3 IR = 200µA to 2mA 2.3 Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) 1.8 Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz Temperature Coefficient (Note 3) TC Long-Term Drift IR = 1.2µA 30 MAX6007B 75 1000h at TA = +25°C V µA mV Ω µVP-P 50 MAX6007A Thermal Hysteresis (Note 4) UNITS ppm/°C 150 ppm 200 ppm ELECTRICAL CHARACTERISTICS—MAX6008 (TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Reverse Breakdown Voltage VR Minimum Operating Current IRMIN CONDITIONS MAX6008A (0.2%) TA = +25°C, IR = 1.2µA MAX6008B (0.5%) VR change < 0.2% from VR at IR = 1.2µA MIN 2.4950 TYP 2.5000 MAX 2.5050 2.4875 2.5000 2.5125 0.5 1.0 Reverse Breakdown Change with Current IR = 1.2µA to 200µA 1.5 IR = 200µA to 2mA 2.5 Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz Temperature Coefficient (Note 3) Long-Term Drift Thermal Hysteresis (Note 4) Maxim Integrated TC IR = 1.2µA 1000h at TA = +25°C 2 UNITS V µA mV Ω µVP-P 60 MAX6008A 30 MAX6008B 75 ppm/°C 150 ppm 200 ppm 3 MAX6006–MAX6009 1µA SOT23 Precision Shunt Voltage Reference ELECTRICAL CHARACTERISTICS—MAX6009 (TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Reverse Breakdown Voltage VR Minimum Operating Current IRMIN TA = +25°C, IR = 1.2µA CONDITIONS MAX6009A (0.2%) MIN 2.9940 TYP 3.000 MAX 3.0060 MAX6009B (0.5%) 2.9850 3.000 3.0150 0.5 1.0 VR change < 0.2% from VR at IR = 1.2µA Reverse Breakdown Change with Current IR = 1.2µA to 200µA 1.7 IR = 200µA to 2mA 2.7 Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz Temperature Coefficient (Note 3) IR = 1.2µA TC 2.2 MAX6009A 30 MAX6009B 75 Thermal Hysteresis (Note 4) Note 1: Note 2: Note 3: Note 4: V µA mV Ω µVP-P 75 1000h at TA = +25°C Long-Term Drift UNITS ppm/°C 150 ppm 200 ppm All devices are 100% production tested at TA = +25°C 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 +25°C output voltage after cycling the device from TMIN to TMAX . Typical Operating Characteristics (CL = 0.01µF, TA = +25°C, unless otherwise noted.) MAX6006 VOUT vs. CURRENT -0.5 -1.0 -1.5 -2.0 MAX6006/9-03 2.0 1.5V 1.5 0 1.0 TA = +85°C TA = -40°C 0.5 1.2µA -2.5 TA = +25°C 0 -3.0 -50 0 50 TEMPERATURE (°C) 4 2.5 MAX6006 STARTUP MAX6006/9-02 0 IR = 1.2µA VOUT = 2.5V REVERSE VOLTAGE CHANGE (mV) REFERENCE VOLTAGE CHANGE (mV) 0.5 MAX6006/9-01 TEMPERATURE DRIFT 100 0.001 0.01 0.1 1 10 20ms/div REVERSE CURRENT (mA) Maxim Integrated MAX6006–MAX6009 1µA SOT23 Precision Shunt Voltage Reference Typical Operating Characteristics (continued) (CL = 0.01µF, TA = +25°C, unless otherwise noted.) 100 10 2.5 1.2µA 1.0 TA = -40°C TA = +25°C 0.5 TA = +85°C 1 10 100 0.001 1000 0.01 0.1 1 10 FREQUENCY (kHz) REVERSE CURRENT (mA) MAX6009 0.01Hz TO 10Hz NOISE MAX6009 OUTPUT IMPEDANCE vs. FREQUENCY MAX6006/9-08 1000 IR = 6µA, ∆ IR = 1.2µA IMPEDANCE (Ω) 0V 0.1 NOISE VOLTAGE (20µV/div) MAX6006/9-07 3V 1.5 MAX6006/9-09 0.01 MAX6009 STARTUP 2.0 0 1 TIME (2s/div) MAX6006/9-06 IR = 6µA, ∆IR = 1.2µA REVERSE VOLTAGE CHANGE (mV) 1.2µA MAX6006/9-05 1000 IMPEDANCE (Ω) NOISE VOLTAGE (20µ/div) MAX6009 VOUT vs. CURRENT MAX6006 OUTPUT IMPEDANCE vs. FREQUENCY MAX6006/9-04 MAX6006 0.01Hz TO 10Hz NOISE 100 10 1 20ms/div TIME (2s/div) 0.01 0.1 1 10 100 1000 FREQUENCY (kHz) Maxim Integrated 5 MAX6006–MAX6009 1µA SOT23 Precision Shunt Voltage Reference Pin Description PIN FUNCTION NAME SOT23 SO 1 6, 8 OUT Output Voltage. Bias OUT with a pullup resistor to a potential greater than OUT. Bypass OUT to GND with a 0.01µF or larger capacitor. 2 4 GND Ground 3 — IC — 1, 2, 3, 5, 7 N.C. Internally connected test point. Leave this pin unconnected, or connect to GND. No connection. Not internally connected. Detailed Description Typical Applications 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). 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. Applications Information Output/Load Capacitance For devices in this family, OUT needs to be bypassed to GND with a 0.01µF 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. VS Output Voltage Hysteresis Output voltage 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 temperature hysteresis value is typically less than 200ppm. 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 1.2µA bias current. Under these conditions, the MAX6006– MAX6009 settle in 40ms. Settling time will linearly decrease in proportion to the circuit’s bias current. 6 IRMIN + IL RBIAS IL VR VOUT IRMIN MAX6006 MAX6007 MAX6008 MAX6009 V -V RBIAS = S R IL + IRMIN Figure 1. Typical Application Circuit Maxim Integrated MAX6006–MAX6009 1µA SOT23 Precision Shunt Voltage Reference MAX6008 R1 200kΩ +10V MAX6008 R1 200kΩ 4 5 4 5 1 1 MAX4162EUK MAX4162EUK 3 3 2 2 IOUT IOUT R2 -1.0V TO -7V IOUT = R2 +1.0V TO +7V 2.5V R2 -10V Figure 2. Precision 1µA to 1mA Current Sources Ordering Information (continued) OUTPUT VOLTAGE (V) INITIAL ACCURACY (%) TEMP COEFFICIENT (ppm/°C) PIN-PACKAGE TOP MARK MAX6007BEUR+T 2.048 0.5 75 3 SOT23 +FZGL MAX6007BESA+ 2.048 0.5 75 8 SO — MAX6008AEUR+T 2.50 0.2 30 3 SOT23 +FZGN MAX6008AEUR/V+T 2.50 0.2 30 3 SOT23 +FZWO MAX6008AESA+ 2.50 0.2 30 8 SO — MAX6008BEUR+T 2.50 0.5 75 3 SOT23 +FZGO MAX6008BESA+ 2.50 0.5 75 8 SO — MAX6009AEUR+T 3.00 0.2 30 3 SOT23 +FZGQ MAX6009AESA+ 3.00 0.2 30 8 SO — MAX6009BEUR+T 3.00 0.5 75 3 SOT23 +FZGR MAX6009BESA+ 3.00 0.5 75 8 SO — PART +Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. T = Tape and reel. Package Information Chip Information PROCESS: BiCMOS Maxim Integrated For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 3 SOT23 U3+1 21-0051 90-0179 8 SO S8+2 21-0041 90-0096 7 MAX6006–MAX6009 1µA SOT23 Precision Shunt Voltage Reference Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 8/00 Initial release — 1 7/12 Added /V to MAX6008 and updated Ordering Information. 7 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 8 ________________________________Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2012 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.