19-1177; Rev. 1; 10/02 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References Features 3-Pin SOT23 Package (MAX6125/MAX6141/MAX6145/MAX6150) 4-Pin SOT143 Package (MAX6160) Low, 200mV Dropout Voltage 75A Supply Current, Independent of Input Voltage 15ppm/C Typical Tempco (50ppm/C, max) Stable for All Capacitive Loads up to 10nF Adjustable Output Voltage from 1.23V to (VIN - 0.2V) (MAX6160) Optimized for 3V/5V Operation Applications 3V/5V Systems Battery-Powered Systems Portable and Hand-Held Equipment Selector Guide Data-Acquisition Systems Instrumentation and Process Control PART PRESET OUTPUT VOLTAGE (V) PINPACKAGE MAX6125 2.5 3 SOT23/8 SO MAX6141 4.096 3 SOT23/8 SO MAX6145 4.5 3 SOT23/8 SO MAX6150 5 3 SOT23/8 SO MAX6160 Adjustable (1.23 to 12.40) 4 SOT143/8 SO Ordering Information PART TEMP RANGE PINPACKAGE MAX6125ESA -40C to +85C 8 SO MAX6125EUR-T -40C to +85C 3 SOT23-3 MAX6141ESA -40C to +85C 8 SO MAX6141EUR-T -40C to +85C 3 SOT23-3 TOP MARK -- EBAA -- ECAA Ordering Information continued on last page. Typical Operating Circuit appears on last page. Pin Configurations TOP VIEW OUT 1 MAX6125 MAX6141 MAX6145 MAX6150 MAX6160 N.C. 2 N.C. 3 GND 4 SO 8 IN 7 N.C. 6 N.C. 5 N.C. (ADJ) GND 1 IN 1 OUT 2 MAX6125 MAX6141 MAX6145 MAX6150 SOT23-3 4 OUT 3 IN MAX6160 3 GND ADJ 2 SOT143-4 ( ) ARE FOR MAX6160 ONLY ________________________________________________________________ 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 MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 General Description The MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 low-dropout, micropower, three-terminal voltage references offer 2.5V, 4.096V, 4.5V, 5.0V, and adjustable (1.23V to 12.4V) output voltages, respectively. Low, 200mV dropout makes these devices ideal for 3V and 5V systems. Unlike two-terminal references that waste battery current and require an external resistor, the MAX61xx family's supply current is virtually independent of input voltage variations, which translates to longer battery life. Initial accuracy for these devices is 1%. The output temperature coefficient is typically 15ppm/C, and guaranteed to be less than 50ppm/C (except for the MAX6160). The MAX6125/MAX6141/MAX6145/ MAX6150 are available in 3-pin SOT23 and 8-pin SO packages. The MAX6160 is available in 4-pin SOT143 and 8-pin SO packages. MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References ABSOLUTE MAXIMUM RATINGS (Voltages With Respect to GND) IN .......................................................................-0.3V to +13.5V OUT, ADJ...................................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration (to IN or GND).............Continuous Continuous Power Dissipation (TA = +70C) 8-Pin SO (derate 5.9mW/C above +70C)....................471mW 3-Pin SOT23 (derate 4mW/C above +70C).................320mW 4-Pin SOT143 (derate 4mW/C above +70C)...............320mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +160C 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--MAX6125 (VIN = 2.7V, IOUT = 0mA, TA = +25C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage Output Voltage Output Voltage Temperature Coefficient Output Voltage Noise Line Regulation Load Regulation Quiescent Supply Current Change in Supply Current vs. Change in Input Voltage SYMBOL VIN VOUT TCVOUT en CONDITIONS TA = TMIN to TMAX MIN TYP 2.7 TA = +25C 2.475 TA = TMIN to TMAX 2.450 2.500 MAX UNITS 12.6 V 2.525 2.550 TA = TMIN to TMAX 15 0.1Hz to 10Hz 15 10Hz to 10kHz 500 50 1 50 ISOURCE = 0mA to 1mA 0.4 1 ISINK = 0mA to 1mA 1.15 10 IQ IQ/VIN TA = +25C 75 TA = TMIN to TMAX 100 130 VIN = 2.7V to 12.6V ppm/C VP-P VOUT/VIN VIN = 2.7V to 12.6V, TA = TMIN to TMAX VOUT/IOUT V V/V mV/mA A 1.7 6 A/V TYP MAX UNITS 12.6 V 4.096 4.140 ELECTRICAL CHARACTERISTICS--MAX6141 (VIN = 4.3V, IOUT = 0mA, TA = +25C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage Output Voltage Output Voltage Temperature Coefficient Output Voltage Noise Line Regulation Load Regulation Quiescent Supply Current Change in Supply Current vs. Change in Input Voltage 2 SYMBOL VIN VOUT TCVOUT en CONDITIONS TA = TMIN to TMAX MIN 4.3 TA = +25C 4.055 TA = TMIN to TMAX 4.015 TA = TMIN to TMAX 4.180 15 0.1Hz to 10Hz 25 10Hz to 10kHz 700 50 2 50 ISOURCE = 0mA to 1mA 0.55 1.6 ISINK = 0mA to 1mA 1.65 16 78 105 IQ IQ/VIN TA = +25C TA = TMIN to TMAX VIN = 4.3V to 12.6V 130 1.7 _______________________________________________________________________________________ ppm/C VP-P VOUT/VIN VIN = 4.3V to 12.6V, TA = TMIN to TMAX VOUT/IOUT V 6 V/V mV/mA A A/V SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 ELECTRICAL CHARACTERISTICS--MAX6145 (VIN = 4.7V, IOUT = 0mA, TA = +25C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage SYMBOL VIN Output Voltage VOUT Output Voltage Temperature Coefficient Output Voltage Noise Line Regulation TCVOUT en Quiescent Supply Current Change in Supply Current vs. Change in Input Voltage TA = TMIN to TMAX MIN TYP MAX UNITS 12.6 V 4.500 4.545 4.7 TA = +25C 4.455 TA = TMIN to TMAX 4.410 4.590 TA = TMIN to TMAX 15 0.1Hz to 10Hz 30 10Hz to 10kHz 800 50 2 50 ISOURCE = 0mA to 1mA 0.6 1.8 ISINK = 0mA to 1mA 1.75 18 IQ IQ/VIN TA = +25C 79 TA = TMIN to TMAX 105 130 VIN = 4.7V to 12.6V V ppm/C VP-P VOUT/VIN VIN = 4.7V to 12.6V, TA = TMIN to TMAX VOUT/IOUT Load Regulation CONDITIONS V/V mV/mA A 1.7 6 A/V TYP MAX UNITS 12.6 V 5.000 5.050 ELECTRICAL CHARACTERISTICS--MAX6150 (VIN = 5.2V, IOUT = 0mA, TA = +25C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage SYMBOL VIN Output Voltage VOUT Output Voltage Temperature Coefficient Output Voltage Noise Line Regulation TCVOUT en Quiescent Supply Current Change in Supply Current vs. Change in Input Voltage TA = TMIN to TMAX MIN 5.2 TA = +25C 4.950 TA = TMIN to TMAX 4.900 5.100 TA = TMIN to TMAX 15 0.1Hz to 10Hz 35 10Hz to 10kHz 900 50 1 50 ISOURCE = 0mA to 1mA 0.65 2 ISINK = 0mA to 1mA 1.9 20 TA = +25C 80 110 IQ IQ/VIN TA = TMIN to TMAX VIN = 5.2V to 12.6V 145 1.7 V ppm/C VP-P VOUT/VIN VIN = 5.2V to 12.6V, TA = TMIN to TMAX VOUT/IOUT Load Regulation CONDITIONS 6 V/V mV/mA A A/V _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS--MAX6160 (VIN = 2.7V; IOUT = 0mA; R1 = 215k 0.1%, R2 = 208k 0.1% (circuit of Figure 1); TA = +25C; unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL Supply Voltage CONDITIONS VIN Output Voltage Range Output Voltage VOUT ADJ Feedback Voltage Threshold VADJ ADJ Input Current IADJ Output Voltage Temperature Coefficient TCVOUT Output Voltage Noise en VOUT/VIN Line Regulation Quiescent Supply Current TYP 2.7 TA = TMIN to TMAX 1.23 TA = +25C 2.475 TA = TMIN to TMAX 2.450 2.500 UNITS 12.6 V V 2.525 V 2.550 1.23 V VADJ = 1.23V 70 nA TA = TMIN to TMAX 15 100 0.1Hz to 10Hz 15 10Hz to 10kHz 500 ppm/C VP-P 1 50 ISOURCE = 0mA to 1mA 0.35 1 ISINK = 0mA to 1mA 1.15 10 75 V/V mV/mA 100 TA = TMIN to TMAX IQ/VIN MAX VIN - 0.2 TA = +25C IQ Change in Supply Current vs. Change in Input Voltage MIN TA = TMIN to TMAX VIN = 2.7V to 12.6V, TA = TMIN to TMAX VOUT/IOUT Load Regulation A 130 VIN = 2.7V to 12.6V 1.7 6 A/V Note 1: All devices are 100% production tested at TA = +25C, and are guaranteed by design for TA = TMIN to TMAX as specified. Note 2: R1 and R2 program the output voltage in the 1.23V to (VIN - 0.2V) range (see the Setting the MAX6160 Output Voltage section). __________________________________________Typical Operating Characteristics (VIN = VIN(MIN), IOUT = 0mA, TA = +25C, unless otherwise noted.) SUPPLY CURRENT (A) 80 70 60 VIN = 10V 90 80 70 VIN = 3V 60 VIN = 5V 50 40 30 50 VALID OVER VIN(MIN) TO VIN(MAX) FOR EACH PART 40 2 4 6 8 10 INPUT VOLTAGE ( V) 1.0 VOUT = 4.5V (MAX6145) 0.8 VOUT = 5.0V (MAX6150) 0.6 0.4 VOUT = 4.096V (MAX6141) 0.2 VOUT = 2.5V (MAX6125/MAX6160) 20 0 10 12 14 MAX6125-TOC03 90 100 MAX6125-TOC02 110 MAX6125-TOC01 100 4 LOAD REGULATION (SOURCING) vs. TEMPERATURE SUPPLY CURRENT vs. TEMPERATURE LOAD REGULATION (mV/mA) SUPPLY CURRENT vs. INPUT VOLTAGE SUPPLY CURRENT (A) MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References -50 -25 0 25 50 TEMPERATURE (C) 75 100 -50 -25 0 25 50 TEMPERATURE (C) _______________________________________________________________________________________ 75 100 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References MAX6125/MAX6160 OUTPUT VOLTAGE vs. SOURCE CURRENT 2.500 1.0 VOUT = 4.096V (MAX6141) 0.5 4.096 OUTPUT VOLTAGE (V) 1.5 4.097 MAX6125-TOC05 VOUT = 5.0V (MAX6150) OUTPUT VOLTAGE (V) LOAD REGULATION (mV/mA) VOUT = 4.5V (MAX6145) 2.0 2.501 MAX6125-TOC04 2.5 MAX6141 OUTPUT VOLTAGE vs. SOURCE CURRENT 2.499 2.498 2.497 MAX6125-TOC06 LOAD REGULATION (SINKING) vs. TEMPERATURE 4.095 4.094 4.093 VOUT = 2.5V (MAX6125/MAX6160) 2.496 0 -50 -25 0 25 50 75 100 0.5 1.0 1.5 2.0 2.5 0.5 0 1.0 1.5 2.0 TEMPERATURE (C) SOURCE CURRENT (mA) SOURCE CURRENT (mA) MAX6145 OUTPUT VOLTAGE vs. SOURCE CURRENT MAX6150 OUTPUT VOLTAGE vs. SOURCE CURRENT DROPOUT VOLTAGE vs. SOURCE CURRENT 4.499 4.498 4.497 4.999 4.998 4.997 2.5 MAX6125-TOC09 350 DROPOUT VOLTAGE (mV) 5.000 OUTPUT VOLTAGE (V) 4.500 400 MAX6125-TOC08 5.001 MAX6125-TOC07 4.501 OUTPUT VOLTAGE (V) 4.092 0 300 250 200 150 100 50 4.496 0.5 1.0 1.5 2.0 2.5 0 0.5 1.0 1.5 2.0 0.0 0.5 2.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 SOURCE CURRENT (mA) SOURCE CURRENT (mA) SOURCE CURRENT (mA) MAX6125/MAX6160 DROPOUT VOLTAGE vs. TEMPERATURE MAX6141/MAX6145/MAX6150 DROPOUT VOLTAGE vs. TEMPERATURE MAX6160 ADJ INPUT CURRENT vs. TEMPERATURE DROPOUT VOLTAGE (mV) 100 90 80 70 96 92 88 84 -25 0 25 50 TEMPERATURE (C) 75 100 VIN = 2.7V VADJ = 1.23V 100 80 60 40 20 0 80 -50 120 MAX6125-TOC12 110 IOUT = 1mA ADJ INPUT CURRENT (nA) IOUT = 1mA MAX6125-TOC11 100 MAX6125-TOC10 120 DROPOUT VOLTAGE (mV) 0 4.996 0 -50 -25 0 25 50 TEMPERATURE (C) 75 100 -50 -25 0 25 50 75 100 TEMPERATURE (C) ________________________________________________________________________________________ 5 MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 ____________________________Typical Operating Characteristics (continued) (VIN = VIN(MIN), IOUT = 0mA, TA = +25C, unless otherwise noted.) _____________________________Typical Operating Characteristics (continued) (VIN = VIN(MIN), IOUT = 0mA, TA = +25C, unless otherwise noted.) 0 -0.5 -1.0 0.1 4 6 8 10 12 14 0 -0.1 80 60 40 -0.2 20 -50 INPUT VOLTAGE (V) *With respect to output voltage at VIN = VIN(MIN). 120 100 -0.3 2 140 PSRR (dB) 0.5 0.2 MAX6125-TOC014 VALID OVER VIN(MIN) TO VIN(MAX) FOR EACH PART CHANGE IN OUTPUT VOLTAGE** (%) MAX6125-TOC013 1.0 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY CHANGE IN OUTPUT VOLTAGE vs. TEMPERATURE MAX6125-TOC15 CHANGE IN OUTPUT VOLTAGE vs. INPUT VOLTAGE CHANGE IN OUTPUT VOLTAGE* (%) MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References -25 0 25 50 75 100 0 0.0001 0.001 0.01 0.1 1 FREQUENCY (kHz) TEMPERATURE (C) **With respect to output voltage at TA = +25C. MAX6125 LOAD-TRANSIENT RESPONSE (SOURCING) MAX6125 LOAD-TRANSIENT RESPONSE (SINKING) A A B B 10s/div 10s/div A = OUTPUT CURRENT, 1mA/div, IOUT = 0mA to 1mA B = OUTPUT VOLTAGE, 50mV/div A = OUTPUT CURRENT, 1mA/div, IOUT = 0mA to -1mA B = OUTPUT VOLTAGE, 200mV/div MAX6125 LINE-TRANSIENT RESPONSE MAX6125 0.1Hz TO 100Hz NOISE A 0V 50V/div 0V B 5s/div 1s/div A = INPUT VOLTAGE, 100mV/div, VIN = 3V 50mV B = OUTPUT VOLTAGE, 20mV/div 6 _______________________________________________________________________________________ 10 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References PIN NAME FUNCTION SO SOT23-3 SOT143 1 2 4 OUT Reference Output 2, 3, 5*, 6, 7 -- -- N.C. No Connection. Not internally connected. 4 3 1 GND Ground 5** -- 2 ADJ Adjustable output voltage feedback input. Connect a resistor divider between OUT, ADJ, and GND (Figure 1). 8 1 3 IN Input Voltage *Except MAX6160. **MAX6160 only. 5% of this calculated value (nearest standard value plus specified resistor tolerance) to optimize the output voltage temperature coefficient. Using R1 = 215k: VIN IN OUT R1 MAX6160 ADJ GND R2 215k 208k 2.5V 1 1.23V which is also the nearest 0.1% resistor value. Choose R2 according to the following equation: R2 = R1 / (VOUT / VADJ - 1) For example, a 2.5V output requires R1 = (1.06 x 105) (2.5V / 1.23V) 215k, which is the nearest standardvalue 0.1% resistor. R2 = VOUT ( ) VOUT R1 = 1.06 x 105 ---- VADJ R1 R2 = ------- VOUT ---- -1 VADJ ( ) VADJ = 1.23V Figure 1. MAX6160 Adjustable Output Circuit _____________Applications Information Setting the MAX6160 Output Voltage Set the output voltage on the MAX6160 by connecting a resistor divider between OUT, ADJ, and GND (Figure 1). Choose R1 according to the following equation: R1 = (1.06 x 105) (VOUT / VADJ) where VTH = 1.23V. The scaling factor (1.06 x 10 5) compensates for the MAX6160's change in ADJ input current over temperature. When R1 is chosen correctly, the change in voltage across R1 caused by the ADJ input current is properly cancelled. Choose R1 to within Input Bypassing For the best line-transient performance, decouple the input with a 0.1F ceramic capacitor, as shown in the Typical Operating Circuit. Locate the capacitor as close to the device pin as possible. Where transient performance is less important, no capacitor is necessary. Output Bypassing The MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 do not require an output capacitor. They are stable for capacitive loads from 0nF to 10nF. If your application requires an output charge reservoir (e.g., to decouple the reference from a DAC's input), then make sure that the total output capacitive load does not exceed 10nF for optimum settling-time performance. _______________________________________________________________________________________ 7 MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 ______________________________________________________________Pin Description MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References Ordering Information (continued) PART TEMP RANGE PINPACKAGE MAX6145ESA -40C to +85C 8 SO MAX6145EUR-T -40C to +85C 3 SOT23-3 MAX6150ESA -40C to +85C 8 SO MAX6150EUR-T -40C to +85C 3 SOT23-3 MAX6160ESA -40C to +85C 8 SO MAX6160EUS-T -40C to +85C 4 SOT143-4 TOP MARK Typical Operating Circuit VIN = (VOUT + 200mV) to 12.6V -- EDAA -- IN EEAA -- JXAA 0.1F* Chip Information TRANSISTOR COUNT: 42 MAX6125 MAX6141 MAX6145 MAX6150 GND *OPTIONAL 8 _______________________________________________________________________________________ OUT VOUT SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References SOT23 L.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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 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.)