Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References

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1 19-777; Rev 3; /01 General Description The /MAX6021/MAX6025/MAX6030/MAX601/ MAX605/ precision, low-dropout, micropower voltage references are available in miniature SOT23-3 surface-mount packages. They feature a proprietary curvature-correction circuit and laser-trimmed thin-film resistors that result in a low temperature coefficient of <15ppm/ C and initial accuracy of better than 0.2. These devices are specified over the extended temperature range. These series-mode voltage references draw only 27µA of quiescent supply current and can sink or source up to 0µA of load current. Unlike conventional shuntmode (two-terminal) references that waste supply current and require an external resistor, devices in the family offer a supply current that s virtually independent of supply voltage (with only a 0.8µA/ variation with supply voltage) and do not require an external resistor. Additionally, these internally compensated devices do not require an external compensation capacitor and are stable with up to 2.2nF of load capacitance. Eliminating the external compensation capacitor saves valuable board area in space-critical applications. Their low dropout voltage and supply-independent, ultra-low supply current make these devices ideal for battery-operated, low-voltage systems. Applications Hand-Held Equipment Data Acquisition Systems Industrial and Process-Control Systems Battery-Operated Equipment Hard-Disk Drives PART MAX6021 MAX6025 MAX6030 MAX601 MAX605 OLTAGE () Pin Configuration appears at end of data sheet. Selector Guide INPUT OLTAGE () 2.5 to to 12.6 ( + 200m) to 12.6 ( + 200m) to 12.6 ( + 200m) to 12.6 ( + 200m) to 12.6 ( + 200m) to (max) Initial Accuracy 15ppm/ C (max) Temperature Coefficient 35µA (max) Quiescent Supply Current 0.8µA/ Supply Current ariation with ±0µA Output Source and Sink Current 100m Dropout at 0µA Load Current 0.12µ/µA Load Regulation 8µ/ Line Regulation Stable with C LOAD = 0 to 2.2nF PART AEUR-T BEUR-T MAX6021AEUR-T MAX6021BEUR-T MAX6025AEUR-T * TEMP. RANGE -0 C to +85 C -0 C to +85 C -0 C to +85 C +SUPPLY INPUT (SEE SELECTOR GUIDE) IN MAX6021 MAX6025 MAX6030 MAX601 MAX605 GND OUT PIN- PACKAGE 3 SOT SOT SOT23-3 Features Ordering Information -0 C to +85 C -0 C to +85 C 3 SOT SOT23-3 Typical Operating Circuit REFERENCE OUT 2.2nF MAX* *CAPACITORS ARE OPTIONAL TOP MARK FZAP FZDA FZAU FZDF FZAQ MAX6025BEUR-T -0 C to +85 C 3 SOT23-3 FZDB MAX6030AEUR-T -0 C to +85 C 3 SOT23-3 FZDW MAX6030BEUR-T -0 C to +85 C 3 SOT23-3 FZDX MAX601AEUR-T -0 C to +85 C 3 SOT23-3 FZAR MAX601BEUR-T -0 C to +85 C 3 SOT23-3 FZDC MAX605AEUR-T -0 C to +85 C 3 SOT23-3 FZAS MAX605BEUR-T -0 C to +85 C 3 SOT23-3 FZDD AEUR-T -0 C to +85 C 3 SOT23-3 FZAT BEUR-T -0 C to +85 C 3 SOT23-3 FZDE /6021/6025/6030/601/605/60 Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at , or visit Maxim s website at

2 /6021/6025/6030/601/605/60 ABSOLUTE MAXIMUM RATINGS (oltages Referenced to GND) IN to OUT to ( + 0.3) Output Short Circuit to GND or IN ( < 6)...Continuous Output Short Circuit to GND or IN ( 6)...60s 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 Continuous Power Dissipation (T A = +70 C) 3-Pin SOT23-3 (derate.0mw/ C above +70 C)...320mW Operating Temperature Range...-0 C to +85 C Storage Temperature Range C to +1 C Lead Temperature (soldering, 10s) C ( = +5, I OUT = 0, T A = T MIN to T MAX, unless otherwise noted. Typical values are at.) (Note 1) Output oltage Line Regulation Noise oltage PARAMETER Output oltage Temperature Coefficient (Note 2) Load Regulation OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply oltage Range Quiescent Supply Current Change in Supply Current SYMBOL / / I OUT I SC / e OUT / t R C OUT I IN I IN / Sourcing: 0 I OUT 0µA Sinking: -0µA I OUT 0 Short to GND Short to IN 1000hr at f = 0.1Hz to 10Hz f = 10Hz to 10kHz = 5 ±100m, f = 120Hz Note CONDITIONS A B A B To = 0.1 of final value, C OUT = pf Guaranteed by line-regulation test MIN TYP MAX UNITS ppm/ C µ/ µ/µa ma ppm ppm/ 1000hr µp-p µ RMS db µs nf µa µa/ 2

3 ELECTRICAL CHARACTERISTICS MAX6021 ( = +5, I OUT = 0, T A = T MIN to T MAX, unless otherwise noted. Typical values are at.) (Note 1) Output oltage Line Regulation Noise oltage PARAMETER Output oltage Temperature Coefficient (Note 2) Load Regulation OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply oltage Range Quiescent Supply Current Change in Supply Current SYMBOL / / I OUT I SC / e OUT / t R C OUT I IN I IN / Sourcing: 0 I OUT 0µA Sinking: -0µA I OUT 0 Short to GND Short to IN 1000hr at f = 0.1Hz to 10Hz f = 10Hz to 10kHz = 5 ±100m, f = 120Hz To = 0.1 of final value, C OUT = pf Note Guaranteed by line-regulation test CONDITIONS MAX6021A MAX6021B MAX6021A MAX6021B MIN TYP MAX UNITS ppm/ C µ/ µ/µa ma ppm ppm/ 1000hr µp-p µ RMS db µs nf µa µa/ /6021/6025/6030/601/605/60 3

4 /6021/6025/6030/601/605/60 ELECTRICAL CHARACTERISTICS MAX6025 ( = +5, I OUT = 0, T A = T MIN to T MAX, unless otherwise noted. Typical values are at.) (Note 1) Output oltage Line Regulation Noise oltage PARAMETER Output oltage Temperature Coefficient (Note 2) Load Regulation Dropout oltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply oltage Range Quiescent Supply Current Change in Supply Current SYMBOL / / I OUT - I SC / / e OUT / t R C OUT I IN I IN / ( + 0.2) 12.6 Sourcing: 0 I OUT 0µA Sinking: -0µA I OUT 0 I OUT = 0µA Short to GND Short to IN 1000hr at f = 0.1Hz to 10Hz f = 10Hz to 10kHz = 5 ±100m, f = 120Hz To = 0.1 of final value, C OUT = pf Note CONDITIONS Guaranteed by line-regulation test ( + 0.2) 12.6 MAX6025A MAX6025B MAX6025A MAX6025B MIN TYP MAX UNITS ppm/ C µ/ µ/µa m ma ppm ppm/ 1000hr µp-p µ RMS db µs nf µa µa/

5 ELECTRICAL CHARACTERISTICS MAX6030 ( = +5, I OUT = 0, T A = T MIN to T MAX, unless otherwise noted. Typical values are at.) (Note 1) PARAMETER Output oltage Output oltage Temperature Coefficient (Note 2) Line Regulation Load Regulation Dropout oltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise oltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply oltage Range Quiescent Supply Current Change in Supply Current SYMBOL / / I OUT e OUT / t R C OUT I IN I IN / 6 15 MAX6030A MAX6030B 6 30 ( ) +0.2) 12.6 Sourcing: 0 I OUT 0µA Sinking: -0µA I OUT 0 - I OUT = 0µA I SC / Short to GND Short to IN 1000hr at f = 0.1Hz to 10Hz f = 10Hz to 10kHz = 5 ±100m, f = 120Hz To = 0.1 of final value, C OUT = pf Note CONDITIONS Guaranteed by line-regulation test ( + 0.2) 12.6 MAX6030A MAX6030B MIN TYP MAX UNITS ppm/ C µ/ µ/µa m ma ppm ppm/ 1000hr µp-p µ RMS db µs nf µa µa/ /6021/6025/6030/601/605/60 5

6 /6021/6025/6030/601/605/60 ELECTRICAL CHARACTERISTICS MAX601 ( = +5, I OUT = 0, T A = T MIN to T MAX, unless otherwise noted. Typical values are at.) (Note 1) PARAMETER Output oltage Output oltage Temperature Coefficient (Note 2) Line Regulation Load Regulation Dropout oltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise oltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply oltage Range Quiescent Supply Current Change in Supply Current SYMBOL / / I OUT - I SC / / e OUT / t R C OUT I IN I IN / ( + 0.2) 12.6 Sourcing: 0 I OUT 0µA I OUT = 0µA Short to GND Short to IN 1000hr at 1000hr at f = 0.1 Hz to 10Hz f = 10Hz to 10kHz = 5 ± 100m, f = 120Hz To = 0.1 of final value, C OUT = pf Note CONDITIONS Guaranteed by line-regulation test ( + 0.2) 12.6 MAX601A MAX601B MAX601A MAX601B MIN TYP MAX Sinking: -0µA I OUT UNITS ppm/ C µ/ µ/µa m ma ppm ppm/ 1000hr µp-p µ RMS db µs nf µa µa/ 6

7 ELECTRICAL CHARACTERISTICS MAX605 ( = +5, I OUT = 0, T A = T MIN to T MAX, unless otherwise noted. Typical values are at.) (Note 1) Output oltage Output oltage Temperature Coefficient (Note 2) Line Regulation Load Regulation Dropout oltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise oltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT PARAMETER Supply oltage Range Quiescent Supply Current Change in Supply Current SYMBOL / / I OUT - I SC / / e OUT / t R C OUT I IN I IN / ( + 0.2) 12.6 Sourcing: 0 I OUT 0µA I OUT = 0µA Short to GND Short to IN 1000hr at f = 0.1Hz to 10Hz f = 10Hz to 10kHz = 5 ±100m, f = 120Hz To = 0.1 of final value, C OUT = pf Note CONDITIONS Guaranteed by line-regulation test ( + 0.2) 12.6 MAX605A MAX605B MAX605A MAX605B MIN TYP MAX Sinking: -0µA I OUT UNITS ppm/ C µ/ µ/µa m ma ppm ppm/ 1000hr µp-p µ RMS db µs nf µa µa/ /6021/6025/6030/601/605/60 7

8 /6021/6025/6030/601/605/60 ELECTRICAL CHARACTERISTICS ( = +5.5, I OUT = 0, T A = T MIN to T MAX, unless otherwise noted. Typical values are at.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX Output oltage A B A Output oltage Temperature 6 20 TC Coefficient (Note 2) OUT 6 25 B 6 30 Line Regulation / IN ( + 0.2) Load Regulation / Sourcing: 0 I OUT 0µA I OUT Sinking: -0µA I OUT Dropout oltage (Note 5) OUT Short-Circuit Current Temperature Hysteresis (Note 3) Long-Term Stability DYNAMIC Noise oltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range INPUT Supply oltage Range Quiescent Supply Current Change in Supply Current - I SC / e OUT / t R C OUT I IN I IN / I OUT = 0µA Short to GND Short to IN 1000hr at f = 0.1 Hz to 10Hz f =10Hz to 10kHz = 5 ±100m, f = 120Hz To = 0.1 of final value, C OUT = pf Note Guaranteed by line-regulation test ( + 0.2) UNITS ppm/ C µ/ µ/µa m ma ppm ppm/ 1000hr µp-p µ RMS db µs nf µa µa/ Note 1: All devices are 100 production tested at and are guaranteed by design for T A = T MIN to T MAX, as specified. Note 2: Temperature Coefficient is measured by the box method, i.e., the maximum is divided by the maximum t. Note 3: Temperature Hysteresis is defined as the change in +25 C output voltage before and after cycling the device from T MIN to T MAX. Note : Not production tested. Guaranteed by design. Note 5: Dropout voltage is the minimum input voltage at which changes 0.2 from at = 5.0 ( = 5.5 for ). 8

9 Typical Operating Characteristics ( = +5 for /21/25/30/1/5, = +5.5 for ; I OUT = 0; ; unless otherwise noted.) (Note 6) OUT () OLTAGE CHANGE (µ) OLTAGE CHANGE (m) OLTAGE TEMPERATURE DRIFT THREE TYPICAL PARTS TEMPERATURE DRIFT ( C) LINE REGULATION T A = -0 C T A = +85 C INPUT OLTAGE () LOAD REGULATION T A = -0 C T A = +85 C LOAD CURRENT (µa) OUT () OLTAGE CHANGE (µ) OLTAGE CHANGE (m) OLTAGE TEMPERATURE DRIFT.988 THREE TYPICAL PARTS TEMPERATURE DRIFT ( C) LINE REGULATION T A = -0 C T A = +85 C INPUT OLTAGE () LOAD REGULATION T A = -0 C T A = +85 C LOAD CURRENT (µa) OLTAGE () DROPOUT OLTAGE () DROPOUT OLTAGE () LONG-TERM DRIFT THREE TYPICAL PARTS TIME (h) MAX6025/MAX6030 DROPOUT OLTAGE vs. SOURCE CURRENT T A = -0 C T A = +85 C SOURCE CURRENT (µa) MAX601/MAX605/ DROPOUT OLTAGE vs. SOURCE CURRENT T A = +85 C T A = -0 C SOURCE CURRENT (µa) /6021/6025/6030/601/605/60 9

10 /6021/6025/6030/601/605/60 PSR (m/) IMPEDANCE (Ω) Typical Operating Characteristics (continued) ( = +5 for /21/25/30/1/5, = +5.5 for ; I OUT = 0; ; unless otherwise noted.) (Note 6) POWER-SUPPLY REJECTION vs. FREQUENCY k 10k 100k 1M 10M FREQUENCY (Hz) 1k IMPEDANCE vs. FREQUENCY k 10k 100k 1M FREQUENCY (Hz) 0.1Hz TO 10Hz NOISE PSR (m/) IMPEDANCE (Ω) k POWER-SUPPLY REJECTION vs. FREQUENCY CC = 5.5 ± k 10k 100k 1M 10M FREQUENCY (Hz) IMPEDANCE vs. FREQUENCY k 10k 100k 1M FREQUENCY (Hz) 0.1Hz TO 10Hz NOISE MAX SUPPLY CURRENT (µa) SUPPLY CURRENT (µa) SUPPLY CURRENT vs. INPUT OLTAGE ALID OER SPECIFIED (MIN) TO (MAX) FOR EACH PART INPUT OLTAGE () SUPPLY CURRENT vs. TEMPERATURE = 12.5 = 7.5 = 5.5 = 2.5 (/MAX6025 ONLY) TEMPERATURE ( C) TURN-ON TRANSIENT /div µ/div 20µ/div 1/div 1sec/div 1sec/div 10µs/div 10

11 Typical Operating Characteristics (continued) ( = +5 for /21/25/30/1/5, = +5.5 for ; I OUT = 0; ; unless otherwise noted.) (Note 6) I OUT 0µA/div 20m/div I OUT 1mA/div 0.2/div LOAD-TRANSIENT RESPONSE µs/div I OUT = ±25µA, AC-COUPLED LOAD-TRANSIENT RESPONSE µs/div I OUT = ±0µA, AC-COUPLED LINE-TRANSIENT RESPONSE µA -25µA +0µA -0µA I OUT µa/div m/div I OUT 0µA/div 200m/div LOAD-TRANSIENT RESPONSE 20µs/div = 5.5, I OUT = ±25µA, AC-COUPLED LOAD-TRANSIENT RESPONSE 20µs/div = 5.5, I OUT = ±0µA, AC-COUPLED /div 2/div 200m/div 100m/div TURN-ON TRANSIENT 10µs/div LINE-TRANSIENT RESPONSE 2.5µs/div = 5 ±0.25, AC-COUPLED /6021/6025/6030/601/605/60 200m/div 100m/div 2µs/div = 5.5 ±0.25, AC-COUPLED Note 6: Many of the Typical Operating Characteristics of the family are extremely similar. The extremes of these characteristics are found in the (1.2 output) and the (5.0 output). The Typical Operating Characteristics of the remainder of the family typically lie between these two extremes and can be estimated based on their output voltage. 11

12 /6021/6025/6030/601/605/60 Pin Description PIN NAME FUNCTION 1 IN Supply oltage Input 2 OUT Reference oltage Output 3 GND Ground Detailed Description The /MAX6021/MAX6025/MAX6030/MAX601/ MAX605/ precision bandgap references use a proprietary curvature-correction circuit and lasertrimmed thin-film resistors, resulting in a low temperature coefficient of <20ppm/ C and initial accuracy of better than 0.2. These devices can sink and source up to 0µA with <200m 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. S CC + MAX681 GND - +2 S IN MAX6021 MAX6025 MAX6030 MAX601 MAX605 GND OUT Supply Current The quiescent supply current of these series-mode references is a maximum of 35µA and is virtually independent of the supply voltage, with only a 0.8µA/ 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 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. 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 200µA beyond the nominal supply current. The input voltage source must be capable of providing this current to ensure reliable turn-on. Output oltage Hysteresis Output voltage hysteresis is the change in the output voltage at 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 130ppm. 1MΩ ICL7652 +REF -2 S 1MΩ nF - -REF Figure 1. Positive and Negative References from Single +3 or +5 Supply 12

13 Turn-On Time These devices typically turn on and settle to within 0.1 of their final value; 30µs to 220µs depending on the device. The turn-on can increase up to 1.5ms with the device operating at the minimum dropout voltage and the maximum load. Positive and Negative Low-Power oltage 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. TOP IEW IN OUT TRANSISTOR COUNT: Pin Configuration MAX6021 MAX6025 MAX6030 MAX601 MAX605 SOT GND Chip Information /6021/6025/6030/601/605/60 13

14 /6021/6025/6030/601/605/60 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. 1 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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