19-1408; Rev 3; 4/10 Precision, Micropower, Low-Dropout Voltage References The MAX6190-MAX6195/MAX6198 precision, micropower, low-dropout voltage references offer high initial accuracy and very low temperature coefficient through a proprietary curvature-correction circuit and lasertrimmed precision thin-film resistors. These series-mode bandgap references draw a maximum of only 35A quiescent supply current, making them ideal for battery-powered instruments. They offer a supply current that is virtually immune to input voltage variations. Load-regulation specifications are guaranteed for source and sink currents up to 500A. These devices are internally compensated, making them ideal for applications that require fast settling, and are stable with capacitive loads up to 2.2nF. Selector Guide PART OUTPUT VOLTAGE (V) INITIAL ACCURACY (mV) TEMPERATURE COEFFICIENT (ppm/C) MAX6190A 1.250 2 <5 MAX6190B 1.250 4 <10 MAX6190C 1.250 6 <25 MAX6191A 2.048 2 <5 MAX6191B 2.048 5 <10 MAX6191C 2.048 10 <25 MAX6192A 2.500 2 <5 MAX6192B 2.500 5 <10 MAX6192C 2.500 10 <25 MAX6193A 3.000 2 <5 MAX6193B 3.000 5 <10 MAX6193C 3.000 10 <25 MAX6198A 4.096 2 <5 MAX6198B 4.096 5 <10 MAX6198C 4.096 10 <25 MAX6194A 4.500 2 <5 MAX6194B 4.500 5 <10 MAX6194C 4.500 10 <25 MAX6195A 5.000 2 <5 MAX6195B 5.000 5 MAX6195C 5.000 10 Features o 2mV (max) Initial Accuracy o 5ppm/C (max) Temperature Coefficient o 35A (max) Supply Current o 100mV Dropout at 500A Load Current o 0.12V/A Load Regulation o 8V/V Line Regulation Applications Hand-Held Instruments Analog-to-Digital and Digital-to-Analog Converters Industrial Process Control Precision 3V/5V Systems Hard-Disk Drives Ordering Information TEMP RANGE PIN-PACKAGE MAX6190AESA+ PART -40C to +85C 8 SO MAX6190BESA+ -40C to +85C 8 SO MAX6190CESA+ -40C to +85C 8 SO MAX6191AESA+ -40C to +85C 8 SO MAX6191BESA+ -40C to +85C 8 SO MAX6191CESA+ -40C to +85C 8 SO MAX6192AESA+ -40C to +85C 8 SO MAX6192BESA+ -40C to +85C 8 SO MAX6192CESA+ -40C to +85C 8 SO Ordering Information continued at end of data sheet. +Denotes a lead(Pb)-free /RoHS-compliant package. Pin Configuration TOP VIEW + N.C. 1 IN 2 <10 N.C. 3 <25 GND 4 MAX6190- MAX6195 MAX6198 8 N.C. 7 N.C. 6 OUT 5 N.C. Typical Operating Circuit appears at end of data sheet. SO ________________________________________________________________ Maxim Integrated Products 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. 1 MAX6190-MAX6195/MAX6198 General Description MAX6190-MAX6195/MAX6198 Precision, Micropower, Low-Dropout Voltage References ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND IN ......................................................................-0.3V to +13.5V OUT ..........................................................-0.3V to (VIN + 0.3V) Output Short Circuit to GND or IN (VIN < 6V) ............Continuous Output Short Circuit to GND or IN (VIN 6V) .........................60s Continuous Power Dissipation (TA = +70C) 8-Pin SO (derate 5.88mW/C above +70C)................471mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C 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--MAX6190 (VIN = 5V, IOUT = 0nA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS OUTPUT Output Voltage Output-Voltage Temperature Coefficient (Note 1) VOUT TCVOUT Line Regulation VOUT/ VIN Load Regulation VOUT/ IOUT Short-Circuit Current ISC Temperature Hysteresis (Note 2) VOUT/ cycle Long-Term Stability VOUT/ time MAX6190A 1.248 1.250 1.252 MAX6190B 1.246 1.250 1.254 MAX6190C 1.244 1.250 1.256 MAX6190A 2 5 MAX6190B 4 10 MAX6190C 8 25 2.5V VIN 12.6V 8 80 Sourcing: 0 IOUT 500A 0.12 0.5 Sinking: -500A IOUT 0 Short to GND Short to IN 0.15 4 4 0.6 TA = +25C V ppm/C V/V V/A mA 75 ppm 1000hrs at +25C 50 ppm/ 1000hrs 0.1Hz to 10Hz 25 VP-P 10Hz to 10kHz 65 VRMS VIN = 5V 100mV, f = 120Hz 86 dB To 0.1%, COUT = 50pF 30 s DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT VOUT/VIN tR COUT (Note 3) 0 2.2 nF INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN 2 Guaranteed by line-regulation test 2.5V VIN 12.6V 2.5 12.6 V 27 35 A 0.8 2 A/V _______________________________________________________________________________________ Precision, Micropower, Low-Dropout Voltage References (VIN = 5V, IOUT = 0nA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX MAX6191A 2.046 2.048 2.050 MAX6191B 2.043 2.048 2.053 MAX6191C 2.038 2.048 2.058 MAX6191A 2 5 MAX6191B 4 10 MAX6191C 8 25 2.5V VIN 12.6V 10 100 Sourcing: 0 IOUT 500A 0.12 0.55 Sinking: -500A IOUT 0 Short to GND Short to IN 0.18 4 4 0.70 UNITS OUTPUT Output Voltage VOUT Output-Voltage Temperature Coefficient (Note 1) TCVOUT Line Regulation VOUT/ VIN Load Regulation VOUT/ IOUT Short-Circuit Current ISC Temperature Hysteresis (Note 2) VOUT/ cycle Long-Term Stability VOUT/ time TA = +25C 1000hrs at +25C V ppm/C V/V V/A mA 75 ppm 50 ppm/ 1000hrs DYNAMIC Noise Voltage eOUT Ripple Rejection VOUT/VIN Turn-On Settling Time Capacitive-Load Stability Range tR COUT 0.1Hz to 10Hz 40 VP-P 10Hz to 10kHz 105 VRMS VIN = 5V 100mV, f = 120Hz 84 dB To 0.1%, COUT = 50pF (Note 3) 30 0 s 2.2 nF INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Guaranteed by line-regulation test 2.5V VIN 12.6V 2.5 12.6 V 27 35 A 0.8 2 A/V _______________________________________________________________________________________ 3 MAX6190-MAX6195/MAX6198 ELECTRICAL CHARACTERISTICS--MAX6191 MAX6190-MAX6195/MAX6198 Precision, Micropower, Low-Dropout Voltage References ELECTRICAL CHARACTERISTICS--MAX6192 (VIN = 5V, IOUT = 0nA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX MAX6192A 2.498 2.500 2.502 MAX6192B 2.495 2.500 2.505 MAX6192C 2.490 2.500 2.510 UNITS OUTPUT Output Voltage Output-Voltage Temperature Coefficient (Note 1) VOUT TCVOUT Line Regulation VOUT/ VIN Load Regulation VOUT/ IOUT Dropout Voltage (Note 4) Short-Circuit Current TA = +25C MAX6192A 2 5 MAX6192B 4 10 MAX6192C 8 25 (VOUT + 0.2V) VIN 12.6V 15 140 Sourcing: 0 IOUT 500A 0.14 0.60 Sinking: -500A IOUT 0 0.18 0.80 100 200 VIN - VOUT VOUT 0.2%, IOUT = 500A ISC Temperature Hysteresis (Note 2) VOUT/ cycle Long-Term Stability VOUT/ time Short to GND Short to IN V ppm/C V/V V/A mV 4 4 mA 75 ppm 1000hrs at +25C 50 ppm/ 1000hrs 0.1Hz to 10Hz 60 VP-P 10Hz to 10kHz 125 VRMS VIN = 5V 100mV, f = 120Hz 82 dB To 0.1%, COUT = 50pF 85 s DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT VOUT/VIN tR COUT (Note 3) 0 2.2 nF 12.6 V INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN 4 Guaranteed by line-regulation test (VOUT + 0.2V) VIN 12.6V VOUT + 0.2 27 35 A 0.8 2 A/V _______________________________________________________________________________________ Precision, Micropower, Low-Dropout Voltage References (VIN = 5V, IOUT = 0nA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX MAX6193A 2.998 3.000 3.002 MAX6193B 2.995 3.000 3.005 MAX6193C 2.990 3.000 3.010 UNITS OUTPUT Output Voltage VOUT Output-Voltage Temperature Coefficient (Note 1) TCVOUT TA = +25C MAX6193A 2 5 MAX6193B 4 10 MAX6193C 8 25 Line Regulation VOUT/ VIN 2.5V VIN 12.6V 20 150 Load Regulation VOUT/ VIN 2.5V VIN 12.6V 0.14 0.60 0.18 0.80 100 200 Dropout Voltage (Note 4) Short-Circuit Current VIN - VOUT IOUT = 500A ISC Temperature Hysteresis (Note 2) VOUT/ cycle Long-Term Stability VOUT/ time Short to GND Short to IN V ppm/C V/V V/V mV 4 4 mA 75 ppm 1000hrs at +25C 50 ppm/ 1000hrs 0.1Hz to 10Hz 75 VP-P 10Hz to 10kHz 150 VRMS VIN = 5V 100mV, f = 120Hz 80 dB To 0.1%, COUT = 50pF 100 s DYNAMIC Noise Voltage eOUT Ripple Rejection VOUT/VIN Turn-On Settling Time Capacitive-Load Stability Range tR COUT (Note 3) 0 2.2 nF 12.6 V INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Guaranteed by line-regulation test (VOUT + 0.2V) VIN 12.6V VOUT + 0.2 27 35 A 0.8 2 A/V _______________________________________________________________________________________ 5 MAX6190-MAX6195/MAX6198 ELECTRICAL CHARACTERISTICS--MAX6193 MAX6190-MAX6195/MAX6198 Precision, Micropower, Low-Dropout Voltage References ELECTRICAL CHARACTERISTICS--MAX6194 (VIN = 5V, IOUT = 0nA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT Output Voltage Output-Voltage Temperature Coefficient (Note 1) VOUT TCVOUT Line Regulation VOUT/ VIN Load Regulation VOUT/ IOUT Dropout Voltage (Note 4) Short-Circuit Current TA = +25C MAX6194A 4.498 4.500 4.502 MAX6194B 4.495 4.500 4.505 MAX6194C 4.490 4.500 4.510 MAX6194A 2 5 MAX6194B 4 10 MAX6194C 8 25 (VOUT + 0.2V) VIN 12.6V 25 160 Sourcing: 0 IOUT 500A 0.16 0.80 Sinking: -500A IOUT 0 0.22 1.00 100 200 VIN - VOUT VOUT 0.2%, IOUT = 500A ISC Temperature Hysteresis (Note 2) VOUT/ cycle Long-Term Stability VOUT/ time Short to GND Short to IN V ppm/C V/V V/A mV 4 4 mA 75 ppm 1000hrs at +25C 50 ppm/ 1000hrs 0.1Hz to 10Hz 110 VP-P 10Hz to 10kHz 215 VRMS VIN = 5V 100mV, f = 120Hz 76 dB To 0.1%, COUT = 50pF 180 DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT VOUT/VIN tR COUT (Note 3) 0 s 2.2 nF OUTPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN 6 Guaranteed by line-regulation test (VOUT + 0.2V) VIN 12.6V VOUT + 0.2 12.6 V 27 35 A 0.8 2 A/V _______________________________________________________________________________________ Precision, Micropower, Low-Dropout Voltage References (VIN = 5.5V, IOUT = 0nA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX MAX6195A 4.998 5.000 5.002 MAX6195B 4.995 5.000 5.005 MAX6195C 4.990 5.000 5.010 UNITS OUTPUT INPUT Output Voltage VOUT Output-Voltage Temperature Coefficient (Note 1) TCVOUT Line Regulation VOUT/ VIN Load Regulation VOUT/ IOUT Dropout Voltage (Note 4) Short-Circuit Current TA = +25C MAX6195A 2 5 MAX6195B 4 10 MAX6195C 8 25 (VOUT + 0.2V) VIN 12.6V 25 160 Sourcing: 0 IOUT 500A 0.17 0.85 Sinking: -500A IOUT 0 0.24 1.10 100 200 VIN - VOUT VOUT 0.2%, IOUT = 500A ISC Temperature Hysteresis (Note 2) VOUT/ cycle Long-Term Stability VOUT/ time Short to GND Short to IN V ppm/C V/V V/A mA 4 4 mA 75 ppm 1000hrs at +25C 50 ppm/ 1000hrs 0.1Hz to 10Hz 120 VP-P 10Hz to 10kHz 240 VRMS VIN = 5.5V 100mV, f = 120Hz 72 dB To 0.1%, COUT = 50pF 220 s DYNAMIC Noise Voltage eOUT Ripple Rejection VOUT/VIN Turn-On Settling Time Capacitive-Load Stability Range tR COUT (Note 3) 0 2.2 nF 12.6 V OUTPUT INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Guaranteed by line-regulation test (VOUT + 0.2V) VIN 12.6V VOUT + 0.2 27 35 A 0.8 2 A/V _______________________________________________________________________________________ 7 MAX6190-MAX6195/MAX6198 ELECTRICAL CHARACTERISTICS--MAX6195 MAX6190-MAX6195/MAX6198 Precision, Micropower, Low-Dropout Voltage References ELECTRICAL CHARACTERISTICS--MAX6198 (VIN = 5V, IOUT = 0nA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS OUTPUT Output Voltage Output-Voltage Temperature Coefficient (Note 1) VOUT TCVOUT Line Regulation VOUT/ VIN Load Regulation VOUT/ IOUT Dropout Voltage (Note 4) Short-Circuit Current TA = +25C MAX6198A 4.094 4.096 4.098 MAX6198B 4.091 4.096 4.101 MAX6198C 4.086 4.096 4.106 MAX6198A 2 5 MAX6198B 4 10 MAX6198C 8 25 (VOUT + 0.2V) VIN 12.6V 25 160 Sourcing: 0 IOUT 500A 0.15 0.70 Sinking: -500A IOUT 0 0.20 0.90 100 200 VIN - VOUT VOUT 0.2%, IOUT = 500A ISC Temperature Hysteresis (Note 2) VOUT/ cycle Long-Term Stability VOUT/ time Short to GND Short to IN V ppm/C V/V V/A mV 4 4 mA 75 ppm 1000hrs at +25C 50 ppm/ 1000hrs 0.1Hz to 10Hz 100 VP-P 10Hz to 10kHz 200 VRMS VIN = 5V 100mV, f = 120Hz 77 dB To 0.1%, COUT = 50pF 160 s DYNAMIC DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT VOUT/VIN tR COUT (Note 3) 0 2.2 nF 12.6 V INPUT INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Note 1: Note 2: Note 3: Note 4: 8 Guaranteed by line-regulation test (VOUT + 0.2V) VIN 12.6V VOUT + 0.2 27 35 A 0.8 2 A/V Temperature Coefficient is measured by the "box" method; i.e., the maximum VOUT is divided by the maximum t. Thermal Hysteresis is defined as the change in +25C output voltage before and after cycling the device from TMIN to TMAX. Not production tested. Guaranteed by design. Dropout voltage is the minimum input voltage at which VOUT changes 0.2% from VOUT at VIN = 5.0V (VIN = 5.5V for MAX6195). _______________________________________________________________________________________ Precision, Micropower, Low-Dropout Voltage References MAX6195 OUTPUT VOLTAGE TEMPERATURE DRIFT 5.0035 5.0030 1.2500 5.0020 5.0015 5.0010 THREE TYPICAL PARTS 1.2494 -40 -20 0 20 40 60 80 0 200 TA = -40C 100 0 TA = +25C 40 60 80 0 100 200 300 400 500 600 700 800 900 1000 100 TEMPERATURE DRIFT (C) TIME (HOURS) MAX6195 LINE REGULATION MAX6192/MAX6193 DROPOUT VOLTAGE vs. SOURCE CURRENT TA = +85C 600 TA = -40C 400 200 0.8 0.7 TA = +25C 6 8 10 12 TA = -40C 0.4 TA = +85C 0.3 5 14 TA = +25C 0 7 9 11 13 0 200 400 600 800 INPUT VOLTAGE (V) INPUT VOLTAGE (V) SOURCE CURRENT (A) MAX6190 LOAD REGULATION MAX6195 LOAD REGULATION MAX6194/MAX6195/MAX6198 DROPOUT VOLTAGE vs. SOURCE CURRENT TA = -40C 0 TA = +85C TA = +25C -0.2 0.2 TA = -40C 0 -0.2 0.30 TA = +25C TA = -40C 0.25 DROPOUT VOLTAGE (V) 0.2 0.4 MAX6012 toc08 MAX6190 toc07 0.4 OUTPUT VOLTAGE CHANGE (mV) 4 0.5 0.2 0 -200 2 0.6 0.1 -100 OUTPUT VOLTAGE CHANGE (mV) 20 800 OUTPUT VOLTAGE CHANGE (V) MAX6190 toc04 OUTPUT VOLTAGE CHANGE (V) TA = +85C 4.996 4.993 -20 MAX6190 LINE REGULATION 300 4.997 4.994 TEMPERATURE DRIFT (C) 400 4.998 5.0000 4.9995 -40 100 4.999 4.995 DROPOUT VOLTAGE (V) 1.2496 5.000 5.0005 MAX6190 toc05 1.2498 5.001 MAX6190 toc06 VOUT (V) VOUT (V) 5.0025 THREE TYPICAL PARTS 5.002 OUTPUT VOLTAGE (V) 1.2504 1.2502 5.003 1000 MAX6190 toc09 1.2506 THREE TYPICAL PARTS MAX6190 toc02 5.0040 MAX6190 toc01 1.2508 MAX6195 LONG-TERM DRIFT MAX6190 toc03 MAX6190 OUTPUT VOLTAGE TEMPERATURE DRIFT TA = +85C 0.20 0.15 0.10 TA = +25C 0.05 TA = +85C -0.4 -500 -375 -250 -125 0 125 250 375 500 LOAD CURRENT (A) -0.4 -500 -375 -250 -125 0 0 125 250 375 500 LOAD CURRENT (A) 0 200 400 600 800 1000 SOURCE CURRENT (A) _______________________________________________________________________________________ 9 MAX6190-MAX6195/MAX6198 Typical Operating Characteristics (VIN = 5V for MAX6190/1/2/3/4/8, VIN = 5.5V for MAX6195; IOUT = 0nA; TA = +25C; unless otherwise noted.) (Note 5) Typical Operating Characteristics (continued) (VIN = 5V for MAX6190/1/2/3/4/8, VIN = 5.5V for MAX6195; IOUT = 0nA; TA = +25C; unless otherwise noted.) (Note 5) 1 1 0.1 0.1 0.01 0.01 40 VALID OVER SPECIFIED VIN (MIN) TO VIN (MAX) FOR EACH PART 38 36 SUPPLY CURRENT (A) VCC = 5.5V 0.25V 10 PSR (mV/V) PSR (mV/V) 10 SUPPLY CURRENT vs. INPUT VOLTAGE MAX16190 toc11 100 MAX6190 toc10 100 MAX6195 POWER-SUPPLY REJECTION vs. FREQUENCY MAX6190 toc12 MAX6190 POWER-SUPPLY REJECTION vs. FREQUENCY 34 32 30 28 26 24 22 1k 10k 100k 1M 20 10M 10 100 1k 10k 100k 1M 2 10M 4 6 8 10 FREQUENCY (Hz) FREQUENCY (Hz) INPUT VOLTAGE (V) MAX6190 OUTPUT IMPEDANCE vs. FREQUENCY MAX6195 OUTPUT IMPEDANCE vs. FREQUENCY SUPPLY CURRENT vs. TEMPERATURE 10 1 40 100 SUPPLY CURRENT (A) OUTPUT IMPEDANCE () 100 10 1 12 14 MAX6190 toc15 1k MAX6190 toc13 1k MAX6190 toc14 100 OUTPUT IMPEDANCE () 35 VIN = 12.5V VIN = 7.5V 30 VIN = 5.5V 25 VIN = 2.5V (MAX6190/MAX6191 ONLY) 0.1 0.01 0.1 1 10 100 1k 20 0.01 0.1 10k 100k 1M 1 10 100 10k 100k 1M -40 FREQUENCY (Hz) FREQUENCY (Hz) MAX6190 0.1Hz TO 10Hz OUTPUT NOISE VOUT 10V/div 1k -20 0 20 40 MAX6190 toc17 VIN 1V/div VOUT 1V/div 10 1s/div 80 100 MAX6190 TURN-ON TRANSIENT MAX6195 0.1Hz TO 10Hz OUTPUT NOISE VOUT 20V/div 1s/div 60 TEMPERATURE (C) MAX6190 toc18 0.1 MAX6190 toc16 MAX6190-MAX6195/MAX6198 Precision, Micropower, Low-Dropout Voltage References 10s/div ______________________________________________________________________________________ Precision, Micropower, Low-Dropout Voltage References MAX6195 TURN-ON TRANSIENT MAX6195 LOAD-TRANSIENT RESPONSE MAX6190 LOAD-TRANSIENT RESPONSE +25A IOUT 40A/div IOUT 50A/div -25A VOUT 50mV/div VOUT 20mV/div VIN 2V/div VOUT 2V/div 10s/div 20s/div 10s/div IOUT = 25A, AC-COUPLED MAX6190 toc21 MAX6190 toc20 MAX6190 toc19 VIN = 5.5V, IOUT = 25A, AC-COUPLED MAX6190 LINE-TRANSIENT RESPONSE MAX6195 LOAD-TRANSIENT RESPONSE MAX6190 LOAD-TRANSIENT RESPONSE +500A IOUT -500A 00A/div IOUT 1mA/div MAX6190 toc24 MAX6190 toc23 MAX6190 toc22 VIN 200mV/div VOUT 00mV/div VOUT 0.2V/div VOUT 100mV/div 20s/div 10s/div VIN = 5.5V, IOUT = 500A, AC-COUPLED IOUT = 500A, AC-COUPLED 2.5s/div VIN = 5V 0.25V, AC-COUPLED MAX6190 toc25 MAX6195 LINE-TRANSIENT RESPONSE VIN 200mV/div VOUT 100mV/div 2s/div VIN = 5.5V 0.25V, AC-COUPLED Note 5: Many of the Typical Operating Characteristics of the MAX6190 family are extremely similar. The extremes of these characteristics are found in the MAX6190 (1.2V output) and the MAX6195 (5.0V output) devices. The Typical Operating Characteristics of the remainder of the MAX6190 family typically lie between these two extremes and can be estimated based on their output voltage. ______________________________________________________________________________________ 11 MAX6190-MAX6195/MAX6198 Typical Operating Characteristics (continued) (VIN = 5V for MAX6190/1/2/3/4/8, VIN = 5.5V for MAX6195; IOUT = 0nA; TA = +25C; unless otherwise noted.) (Note 5) MAX6190-MAX6195/MAX6198 Precision, Micropower, Low-Dropout Voltage References Pin Description PIN 1, 3, 5, 7, 8 NAME N.C. FUNCTION No Connection. Not internally connected. 2 IN 4 GND Supply Voltage Input Ground 6 OUT Reference Voltage Output Detailed Description The MAX6190-MAX6195/MAX6198 precision bandgap references use a proprietary curvature-correction circuit and laser-trimmed thin-film resistors, resulting in a low temperature coefficient of <5ppm/C and initial accuracy of better than 0.1%. These devices can sink and source up to 500A with <200mV of dropout voltage, making them attractive for use in low-voltage applications. Applications Information Output/Load Capacitance Devices in this family do not require an output capacitance for frequency stability. They are stable for capacitive loads from 0 to 2.2nF. However, in applications where the load or the supply can experience step changes, an output capacitor will reduce the amount of overshoot (or undershoot) and assist the circuit's transient response. Many applications do not need an external capacitor, and this family can offer a significant advantage in these applications when board space is critical. Supply Current The quiescent supply current of these series-mode references is a maximum of 35A and is virtually independent of the supply voltage, with only a 0.8A/V variation with supply voltage. Unlike series references, shuntmode references operate with a series resistor connected to the power supply. The quiescent current of a shunt-mode reference is thus a function of the input 12 voltage. Additionally, shunt-mode references have to be biased at the maximum expected load current, even if the load current is not present all the time. In the series-mode MAX6190 family, the load current is drawn from the input voltage only when required, so supply current is not wasted and efficiency is maximized at all input voltages. This improved efficiency can help reduce power dissipation and extend battery life. When the supply voltage is below the minimum specified input voltage (as during turn-on), the devices can draw up to 200A beyond the nominal supply current. The input voltage source must be capable of providing this current to ensure reliable turn-on. 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 typical temperature hysteresis value is 75ppm. Turn-On Time These devices typically turn on and settle to within 0.1% of their final value in 30s to 220s, depending on the device. The turn-on time can increase up to 1.5ms with the device operating at the minimum dropout voltage and the maximum load. Positive and Negative Low-Power Voltage Reference Figure 1 shows a typical method for developing a bipolar reference. The circuit uses a MAX681 voltage doubler/inverter charge-pump converter to power an ICL7652, thus creating a positive as well as a negative reference voltage. ______________________________________________________________________________________ Precision, Micropower, Low-Dropout Voltage References VCC 2VS V+ IN MAX681 GND +REF OUTPUT OUT V- MAX6190- MAX6195 MAX6198 1M, 0.1% V+ OUTPUT GND ICL7652 V1M, 0.1% 10nF -REF OUTPUT -2VS Figure 1. Positive and Negative References from Single 3V or 5V Supply Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE MAX6193AESA+ -40C to +85C 8 SO MAX6193BESA+ -40C to +85C 8 SO MAX6193CESA+ -40C to +85C 8 SO MAX6194AESA+ -40C to +85C 8 SO MAX6194BESA+ -40C to +85C 8 SO MAX6194CESA+ -40C to +85C 8 SO MAX6195AESA+ -40C to +85C 8 SO MAX6195BESA+ -40C to +85C 8 SO MAX6195CESA+ -40C to +85C 8 SO MAX6198AESA+ -40C to +85C 8 SO MAX6198BESA+ -40C to +85C 8 SO MAX6198CESA+ -40C to +85C 8 SO Typical Operating Circuit +SUPPLY INPUT (SEE SELECTOR GUIDE ON FIRST PAGE) IN OUT * MAX6190- MAX6195 MAX6198 GND MAX6198AESA/V+ -40C to +85C 8 SO +Denotes a lead(Pb)-free /RoHS-compliant package. /V denotes an automotive qualified part. 2.2nF MAX* *CAPACITORS ARE OPTIONAL Package Information Chip Information PROCESS: BiCMOS REFERENCE OUT For the latest package outline information and land patterns, go to www.maxim-ic.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. 8 SO S8+2 21-0041 90-0096 ______________________________________________________________________________________ 13 MAX6190-MAX6195/MAX6198 VS MAX6190-MAX6195/MAX6198 Precision, Micropower, Low-Dropout Voltage References Revision History REVISION NUMBER REVISION DATE 3 4/10 DESCRIPTION Added automotive grade part, added lead-free information, and made style changes PAGES CHANGED 1-14 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.