19-2182; Rev 2; 12/02 Precision, Low-Power, Low-Dropout, UCSP Voltage Reference Features The MAX6023 is a family of low-dropout, micropower voltage references in a 5-bump, chip-scale package (UCSP™). The MAX6023 series-mode (three-terminal) references, which operate with input voltages from 2.5V to 12.6V (1.25V and 2.048V options) or (VOUT + 0.2V) to 12.6V (all other voltage options), are available with output voltage options of 1.25V, 2.048V, 2.5V, 3.0V, 4.096V, 4.5V, and 5.0V. These devices are guaranteed an initial accuracy of ±0.2% and 30ppm/°C temperature drift over the -40°C to +85°C extended temperature range. UCSPs offer the benefit of moving to smaller footprint and lower profile devices, significantly smaller than even SC70 or SOT23 plastic surface-mount packages. The significantly lower profile (compared to plastic SMD packages) of the UCSP makes the device ideal for height-critical applications. Miniature UCSP packages also enable device placement close to sources and allow more flexibility in a complex or large design layout. The MAX6023 voltage references use only 27µA of supply current. And unlike shunt-mode (two-terminal) references, the supply current of the MAX6023 family varies only 0.8µA/V with supply-voltage changes, translating to longer battery life. Additionally, these internally compensated devices do not require an external compensation capacitor and are stable up to 2.2nF of load capacitance. The low-dropout voltage and the low supply current make these devices ideal for battery-operated systems. ♦ 5-Bump UCSP Package (1.0mm ✕ 1.5mm ✕ 0.3mm) Applications Hand-Held Equipment ♦ No Output Capacitor Needed ♦ ±0.2% (max) Initial Accuracy ♦ 30ppm/°C (max) Temperature Coefficient ♦ 35µA (max) Quiescent Supply Current ♦ 0.8µA/V (max) Supply Current Variation with VIN ♦ 100mV Dropout at 500µA Load Current ♦ Line Regulation: 160µV/V (max) ♦ Output Voltage Options: 1.25V, 2.048V, 2.5V, 3.0V, 4.096V, 4.5V, 5.0V Ordering Information PART TEMP RANGE BUMPPACKAGE TOP MARK MAX6023EBT12-T -40°C to +85°C 5 UCSP*-5 AAO MAX6023EBT21-T -40°C to +85°C 5 UCSP-5 AAT MAX6023EBT25-T -40°C to +85°C 5 UCSP-5 AAP MAX6023EBT30-T -40°C to +85°C 5 UCSP-5 AAS MAX6023EBT41-T -40°C to +85°C 5 UCSP-5 AAQ MAX6023EBT45-T -40°C to +85°C 5 UCSP-5 AAR MAX6023EBT50-T -40°C to +85°C 5 UCSP-5 AAU *UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and environment. See the UCSP Reliability Notice in the UCSP Reliability section of this data sheet for more information. Typical Operating Circuit Data Acquisition Systems Industrial and Process Control Systems +SUPPLY INPUT (SEE SELECTOR GUIDE) Battery-Operated Equipment Hard-Disk Drives IN OUT Selector Guide PART VOUT (V) INPUT VOLTAGE (V) MAX6023EBT12 1.250 2.5V to 12.6 MAX6023EBT21 2.048 2.5V to 12.6 MAX6023EBT25 2.500 (VOUT + 200mV) to 12.6 MAX6023EBT30 3.000 (VOUT + 200mV) to 12.6 MAX6023EBT41 4.096 (VOUT + 200mV) to 12.6 MAX6023EBT45 4.500 (VOUT + 200mV) to 12.6 MAX6023EBT50 5.000 (VOUT + 200mV) to 12.6 * REFERENCE OUT MAX6023 GND *CAPACITOR IS OPTIONAL. Pin Configuration appears at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ 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 MAX6023 General Description MAX6023 Precision, Low-Power, Low-Dropout, UCSP Voltage Reference 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 = +70°C) 5-Bump UCSP (derate 3.4mW/°C above +70°C)........273mW Operating Temperature Range ..........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Bump Temperature (soldering, 10s)................................+300°C Note 1: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be exposed to during board-level solder attach and rework. This limit permits only the use of solder profiles recommended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow. Preheating is required. Hand or wave soldering is not allowed. 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–MAX6023EBT12 (VOUT = 1.250V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP 1.250 MAX UNITS OUTPUT Output Voltage TA = +25°C 1.247 Initial Voltage Accuracy VOUT TA = +25°C -0.24 Output Voltage Temperature Coefficient (Note 3) Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Short-Circuit Current ISC Temperature Hysteresis Long-Term Stability ∆VOUT/ time 1.253 V +0.24 % 10 30 ppm/°C 2.5V ≤ VIN ≤ 12.6V 10 80 µV/V 0 ≤ IOUT ≤ 400µA 0.4 1.0 -400µA ≤ IOUT ≤ 0 0.5 1.1 µV/µA Short to GND 4 Short to IN 10 (Note 4) 90 ppm 1000hr at TA = +25°C 30 ppm/ 1000hr f = 0.1Hz to 10Hz 25 µVp-p f = 10Hz to 10kHz 65 µVRMS VIN = +5V ±100mV, f = 120Hz 86 dB To VOUT within 0.1% of final value, COUT = 50pF 30 µs mA DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆IOUT tR COUT (Note 3) 0 2.2 nF INPUT Supply-Voltage Range VIN Supply Current IIN Change in Supply Current 2 ∆IIN/∆VIN Guaranteed by line-regulation test 2.5V ≤ VIN ≤ 12.6V 2.5 12.6 V 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, UCSP Voltage Reference (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP 2.048 MAX UNITS OUTPUT Output Voltage TA = +25°C 2.044 Initial Voltage Accuracy VOUT TA = +25°C -0.20 Output Voltage Temperature Coefficient (Note 3) Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Short-Circuit Current ISC Temperature Hysteresis ∆VOUT/ time Long-Term Stability 2.052 V +0.20 % 10 30 ppm/°C 2.5V ≤ VIN ≤ 12.6V 20 100 µV/V 0 ≤ IOUT ≤ 500µA 0.5 1.4 -500µA ≤ IOUT ≤ 0 0.3 0.70 µV/µA Short to GND 4 Short to IN 10 (Note 4) 90 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 40 µVp-p f = 10Hz to 10kHz 105 µVRMS VIN = +5V ±100mV, f = 120Hz 82 dB To VOUT within 0.1% of final value, COUT = 50pF 85 µs mA DYNAMIC CHARACTERISTICS Noise Voltage eOUT ∆VOUT/ ∆IOUT Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range tR COUT (Note 3) 0 2.2 nF INPUT Supply-Voltage Range VIN 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 µA 0.8 2.0 µA/V _______________________________________________________________________________________ 3 MAX6023 ELECTRICAL CHARACTERISTICS–MAX6023EBT21 (VOUT = 2.048V) MAX6023 Precision, Low-Power, Low-Dropout, UCSP Voltage Reference ELECTRICAL CHARACTERISTICS–MAX6023EBT25 (VOUT = 2.500V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP 2.5 MAX UNITS OUTPUT Output Voltage TA = +25°C 2.495 Initial Voltage Accuracy VOUT TA = +25°C -0.20 Output Voltage Temperature Coefficient (Note 3) Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Short-Circuit Current Dropout Voltage V % 10 30 ppm/°C (VOUT + 0.2V) ≤ VIN ≤ 12.6V 25 140 µV/V 0 ≤ IOUT ≤ 500µA 0.5 1.4 -500µA ≤ IOUT ≤ 0 0.3 0.8 µV/µA Short to GND 4 Short to IN 10 (VIN - VOUT) IOUT = 500µA (Note 5) 100 (Note 4) 90 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 60 µVp-p f = 10Hz to 10kHz 125 µVRMS VIN = +5V ±100mV, f = 120Hz 82 dB To VOUT within 0.1% of final value, COUT = 50pF 85 µs ISC Temperature Hysteresis Long-Term Stability 2.505 +0.20 ∆VOUT/ time mA 200 mV DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆IOUT tR COUT (Note 3) 0 2.2 nF VOUT + 0.2 12.6 V 27 35 µA 0.8 2.0 µA/V INPUT Supply-Voltage Range VIN Supply Current IIN Change in Supply Current 4 ∆IIN/∆VIN Guaranteed by line-regulation test (VOUT + 0.2V) ≤ VIN ≤ 12.6V _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, UCSP Voltage Reference (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER MIN TYP MAX UNITS TA = +25°C 2.994 3.000 3.006 V Initial Voltage Accuracy TA = +25°C -0.20 +0.20 % Output Voltage Temperature Coefficient (Note 3) 10 30 ppm/°C (VOUT + 0.2V) ≤ VIN ≤ 12.6V 40 140 µV/V 0 ≤ IOUT ≤ 500µA 0.7 1.5 -500µA ≤ IOUT ≤ 0 0.4 0.8 IOUT = 500µA (Note 5) 100 200 Output Voltage SYMBOL VOUT Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (VIN VOUT) Short-Circuit Current ISC Temperature Hysteresis ∆VOUT/ time Long-Term Stability CONDITIONS µV/µA mV Short to GND 4 Short to IN 10 (Note 4) 90 ppm 50 ppm/ 1000hr 1000hr at TA = +25°C mA DYNAMIC CHARACTERISTICS Noise Voltage eOUT ∆VOUT/ ∆VIN Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range tR COUT f = 0.1Hz to 10Hz 75 µVp-p f = 10Hz to 10kHz 150 µVRMS VIN = +5V ±100mV, f = 120Hz 82 dB To VOUT within 0.1% of final value, COUT = 50pF 85 µs (Note 3) 0 2.2 nF VOUT + 0.2 12.6 V INPUT Supply-Voltage Range Supply Current VIN Guaranteed by line-regulation test IIN Change in Supply Current ∆IIN/∆VIN (VOUT + 0.2V) ≤ VIN ≤ 12.6V 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ 5 MAX6023 ELECTRICAL CHARACTERISTICS–MAX6023EBT30 (VOUT = 3.000V) MAX6023 Precision, Low-Power, Low-Dropout, UCSP Voltage Reference ELECTRICAL CHARACTERISTICS–MAX6023EBT41 (VOUT = 4.096V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP 4.096 MAX UNITS OUTPUT Output Voltage TA = +25°C 4.088 Initial Voltage Accuracy VOUT TA = +25°C -0.20 Output Voltage Temperature Coefficient (Note 3) Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (VIN VOUT) Short-Circuit Current ISC Temperature Hysteresis Long-Term Stability ∆VOUT/ time 4.104 V +0.20 % 10 30 ppm/°C (VOUT + 0.2V) ≤ VIN ≤ 12.6V 50 160 µV/V 0 ≤ IOUT ≤ 500µA 1.0 1.8 -500µA ≤ IOUT ≤ 0 0.3 0.9 IOUT = 500µA (Note 5) 100 200 µV/µA mV Short to GND 4 Short to IN 10 (Note 4) 90 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 100 µVp-p f = 10Hz to 10kHz 200 µVRMS VIN = +5V ±100mV, f = 120Hz 77 dB To VOUT within 0.1% of final value, COUT = 50pF 160 µs mA DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆VIN tR COUT (Note 3) 0 2.2 nF VOUT + 0.2 12.6 V 27 35 µA 0.8 2.0 µA/V INPUT Supply-Voltage Range VIN Supply Current IIN Change in Supply Current 6 ∆IIN/∆VIN Guaranteed by line-regulation test (VOUT + 0.2V) ≤ VIN ≤ 12.6V _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, UCSP Voltage Reference (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP 4.500 MAX UNITS OUTPUT Output Voltage TA = +25°C 4.491 Initial Voltage Accuracy VOUT TA = +25°C -0.20 Output Voltage Temperature Coefficient (Note 3) Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (VIN VOUT) Short-Circuit Current ISC Temperature Hysteresis ∆VOUT/ time Long-Term Stability 4.509 V +0.20 % 10 30 ppm/°C (VOUT + 0.2V) ≤ VIN ≤ 12.6V 50 160 µV/V 0 ≤ IOUT ≤ 500µA 1.0 2.0 -500µA ≤ IOUT ≤ 0 0.3 1.0 IOUT = 500µA (Note 5) 100 200 µV/µA mV Short to GND 4 Short to IN 10 (Note 4) 90 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 110 µVp-p f = 10Hz to 10kHz 215 µVRMS VIN = +5V ±100mV, f = 120Hz 82 dB To VOUT within 0.1% of final value, COUT = 50pF 85 µs mA DYNAMIC CHARACTERISTICS Noise Voltage eOUT ∆VOUT/ ∆VIN Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range tR COUT (Note 3) 0 2.2 nF VOUT + 0.2 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 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ 7 MAX6023 ELECTRICAL CHARACTERISTICS–MAX6023EBT45 (VOUT = 4.500V) MAX6023 Precision, Low-Power, Low-Dropout, UCSP Voltage Reference ELECTRICAL CHARACTERISTICS–MAX6023EBT50 (VOUT = 5.000V) (VIN = +5.5V, IOUT = 0, TA = TMIN to TMAX , unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER MIN TYP MAX UNITS TA = +25°C 4.990 5.0 5.010 V Initial Voltage Accuracy TA = +25°C -0.20 +0.20 % Output Voltage Temperature Coefficient (Note 3) 10 30 ppm/°C (VOUT + 0.2V) ≤ VIN ≤ 12.6V 50 160 µV/V 0 ≤ IOUT ≤ 500µA 1.2 2.2 -500µA ≤ IOUT ≤ 0 0.3 1.1 IOUT = 500µA (Note 5) 100 200 Output Voltage SYMBOL VOUT Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (VIN VOUT) Short-Circuit Current ISC Temperature Hysteresis Long-Term Stability ∆VOUT/ time CONDITIONS µV/µA mV Short to GND 4 Short to IN 10 (Note 4) 90 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 120 µVp-p f = 10Hz to 10kHz 240 µVRMS VIN = +5V ±100mV, f = 120Hz 72 dB To VOUT within 0.1% of final value, COUT = 50pF 220 µs mA DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆VIN tR COUT (Note 3) 0 2.2 nF VOUT + 0.2 12.6 V 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 27 35 µA 0.9 2.0 µA/V Note 2: Devices are 100% production tested at TA = +25°C and are guaranteed by design from TA = TMIN to TMAX. Note 3: Guaranteed by design. Note 4: Temperature hysteresis is defined as the change in TA = +25°C output voltage before and after temperature cycling of the device from TA = TMIN to TMAX. Note 5: Dropout voltage is the minimum input voltage at which VOUT changes ≤ 0.2% from VOUT at VIN = +5.0V (VIN = +5.5V for MAX6023EBT50). 8 _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, UCSP Voltage Reference MAX6023EBT50 OUTPUT VOLTAGE TEMPERATURE DRIFT 5.002 VOUT (V) 1.2490 1.2485 4.994 4.992 1.2480 4.990 THREE TYPICAL PARTS 1.2475 0 20 40 60 80 4.986 -40 100 4.999 4.998 4.997 4.996 4.994 4.993 -20 0 20 40 60 80 0 100 200 300 400 500 600 700 800 900 1000 100 TEMPERATURE DRIFT (°C) TEMPERATURE DRIFT (°C) TIME (hr) MAX6023EBT12 LINE REGULATION MAX6023EBT50 LINE REGULATION MAX6023EBT25/30 DROPOUT VOLTAGE vs. SOURCE CURRENT 300 TA = +85°C 200 TA = -40°C 100 0 TA = +25°C 800 TA = +85°C 600 TA = -40°C 400 200 0.8 TA = +25°C MAX6023 toc06 MAX6023 toc04 400 0.7 DROPOUT VOLTAGE (V) -20 5.000 4.995 THREE TYPICAL PARTS 4.988 OUTPUT VOLTAGE CHANGE (µV) 1.2470 -40 OUTPUT VOLTAGE CHANGE (µV) 4.996 MAX6023 toc05 VOUT (V) 4.998 1.2495 5.001 OUTPUT VOLTAGE (V) 5.000 1.2500 THREE TYPICAL PARTS 5.002 0.6 0.5 TA = -40°C 0.4 0.3 TA = +85°C 0.2 0 0.1 -100 -200 6 8 10 12 5 7 9 11 13 0 200 400 600 800 INPUT VOLTAGE (V) SOURCE CURRENT (µA) MAX6023EBT12 LOAD REGULATION MAX6023EBT50 LOAD REGULATION MAX6023EBT41/45/50 DROPOUT VOLTAGE vs. SOURCE CURRENT 0.2 TA = -40°C 0 TA = +85°C TA = +25°C -0.2 0.4 0.2 TA = -40°C 0 -0.2 TA = +25°C TA = +85°C -0.4 -500 -375 -250 -125 0 125 250 375 500 LOAD CURRENT (µA) -0.4 -500 -375 -250 -125 0 125 250 375 500 LOAD CURRENT (µA) 0.30 TA = -40°C 0.25 DROPOUT VOLTAGE (V) MAX6023 toc07 0.4 OUTPUT VOLTAGE CHANGE (mV) 14 INPUT VOLTAGE (V) MAX6023 toc08 4 OUTPUT VOLTAGE CHANGE (mV) 2 TA = +25°C 0 0.20 1000 MAX6023 toc09 1.2505 5.003 MAX6023 toc02 5.004 MAX6023 toc01 1.2510 MAX6023EBT50 LONG-TERM DRIFT MAX6023 toc03 MAX6023EBT12 OUTPUT VOLTAGE TEMPERATURE DRIFT TA = +85°C 0.15 0.10 TA = +25°C 0.05 0 0 200 400 600 800 1000 SOURCE CURRENT (µA) _______________________________________________________________________________________ 9 MAX6023 Typical Operating Characteristics (VIN = +5V for MAX6023EBT12/21/25/30/41/45, VIN = +5.5V for MAX6023EBT50; IOUT = 0; TA = +25°C, unless otherwise noted.) (Note 6) Typical Operating Characteristics (continued) (VIN = +5V for MAX6023EBT12/21/25/30/41/45, VIN = +5.5V for MAX6023EBT50; IOUT = 0; TA = +25°C, unless otherwise noted.) (Note 6) MAX6023EBT50 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY PSRR (mV/V) 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 (µA) 10 10 PSRR (mV/V) VIN = +5.5V ±0.25V MAX6023 toc12 100 MAX6023 toc10 100 SUPPLY CURRENT vs. INPUT VOLTAGE MAX6023 toc11 MAX6023EBT12 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 34 32 30 28 26 24 22 1k 10k 100k 1M 20 10 10M 100 1k 10k 100k 1M 10M 2 4 6 8 10 FREQUENCY (Hz) FREQUENCY (Hz) INPUT VOLTAGE (V) MAX6023EBT12 OUTPUT IMPEDANCE vs. FREQUENCY MAX6023EBT50 OUTPUT IMPEDANCE vs. FREQUENCY SUPPLY CURRENT vs. TEMPERATURE 10 1 40 100 SUPPLY CURRENT (µA) OUTPUT IMPEDANCE (Ω) 100 10 12 14 MAX6023 toc15 1k MAX6023 toc13 1k MAX6023 toc14 100 OUTPUT IMPEDANCE (Ω) 35 VIN = 12.5V VIN = 7.5V 30 VIN = 5.5V 25 1 VIN = 2.5V 0.1 20 0.1 0.01 0.1 1 10 100 1k 10k 100k 1M 0.01 0.1 1 10 100 1k -40 10k 100k 1M -20 0 20 40 TEMPERATURE (°C) MAX6023EBT12 0.1Hz TO 10Hz OUTPUT NOISE MAX6023EBT50 0.1Hz TO 10Hz OUTPUT NOISE MAX6023EBT12 TURN-ON TRANSIENT MAX6023 toc17 VIN 1V/div VOUT 20µV/div VOUT 1V/div 1s/div 1s/div 80 100 MAX6023 toc18 FREQUENCY (Hz) VOUT 10µV/div 10 60 FREQUENCY (Hz) MAX6023 toc16 MAX6023 Precision, Low-Power, Low-Dropout, UCSP Voltage Reference 10µs/div ______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, UCSP Voltage Reference MAX6023EBT12 LOAD-TRANSIENT RESPONSE VOUT 50mV/div VOUT 20mV/div VIN 2V/div VOUT 2V/div 10µs/div 10µs/div 20µs/div MAX6023EBT50 LOAD-TRANSIENT RESPONSE IOUT = ±500µA MAX6023 toc22 MAX6023EBT12 LOAD-TRANSIENT RESPONSE IOUT 1mA/div MAX6023 toc21 IOUT = ±25µA IOUT 50µA/div IOUT 500µA/div IOUT = ±500µA MAX6023 toc23 IOUT 40µA/div MAX6023 toc20 MAX6023 toc19 IOUT = ±25µA MAX6023EBT50 TURN-ON TRANSIENT MAX6023EBT50 LOAD-TRANSIENT RESPONSE VOUT 200mV/div 20µs/div MAX6023EBT12 LINE-TRANSIENT RESPONSE MAX6023EBT50 LINE-TRANSIENT RESPONSE VIN = 5V ±0.25V VIN 200mV/div MAX6023 toc24 10µs/div VIN = 5.5V ±0.25V VIN 200mV/div MAX6023 toc25 VOUT 200V/div VOUT 100mV/div VOUT 100mV/div 2.5µs/div 2µs/div Note 6: Many of the Typical Operating Characteristics of the MAX6023 family are extremely similar. The extremes of these characteristics are found in MAX6023EBT12 (1.25V output) and the MAX6023EBT50 (5.0V output). The Typical Operating Characteristics of the remainder of the MAX6023 family typically lie between these two extremes and can be estimated based on their output voltage. ______________________________________________________________________________________ 11 MAX6023 Typical Operating Characteristics (continued) (VIN = +5V for MAX6023EBT12/21/25/30/41/45, VIN = +5.5V for MAX6023EBT50; IOUT = 0; TA = +25°C, unless otherwise noted.) (Note 6) Precision, Low-Power, Low-Dropout, UCSP Voltage Reference MAX6023 Pin Description BUMP NAME A1, A3 I.C. A2 GND B1 OUT B3 IN FUNCTION Internally connected. Do not connect to this pin. Ground 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 typical temperature hysteresis value is 90ppm. Reference Output Input Voltage Detailed Description The MAX6023 precision bandgap references use a proprietary curvature correction circuit and lasertrimmed thin-film resistor, resulting in a low temperature coefficient of <30ppm/°C and initial accuracy of better than 0.2%. These devices can sink and source up to 500µA with <200mV of dropout voltage, making them attractive for use in low-voltage applications. Applications Information Output/Load Capacitance The MAX6023 devices do not require an output capacitor for dynamically stable, oscillation-free operation. 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 reduces the amount of overshoot (or undershoot) and improves the circuit’s transient response. Many applications do not need an external capacitor and this family offers a significant advantage in these applications when board space is critical. Supply Current The no-load supply current of these series-mode references is 35µA maximum, and is virtually independent of the supply voltage, with only a 0.8µA/V variation from the supply voltage. Unlike shunt-mode references that must draw the maximum load current at all times, the load current is drawn from the input voltage source 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. Turn-On Time These devices typically turn on and settle within 0.1% of their final value; 30µs to 220µs 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. UCSP Information UCSP Package Consideration For general UCSP package information and PC layout considerations, refer to the Maxim Application Note: UCSP—A Wafer-Level Chip-Scale Package. UCSP Reliability The UCSP represents a unique package that greatly reduces board space compared to other packages. The chip-scale package represents a unique packaging form factor that may not perform as well as a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a chip-scale package. Performance through operating-life test and moisture resistance remains uncompromised. The wafer-fabrication process primarily determines the performance. Mechanical stress performance is a greater consideration for chip-scale packages. Chip-scale packages are attached through direct solder contact to the user’s PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be considered. Comprehensive reliability tests have been performed and are available upon request. In conclusion, the UCSP performs reliably through environmental stresses. When the supply voltage is below the minimum specified input voltage (as during turn-on), the devices can draw up to 200µA beyond the nominal supply current. The input voltage source must be capable of providing this current to ensure reliable turn-on. 12 ______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, UCSP Voltage Reference TRANSISTOR COUNT: 70 TOP VIEW (BUMPS ON BOTTOM) OUT B1 A1 I.C. A2 GND A3 I.C. MAX6023 IN B3 UCSP Package Information 6L, UCSP.EPS (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. 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 ____________________ 13 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX6023 Chip Information Pin Configuration