MAX16191ATA00/VY+

EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit General Description Benefits and Features The MAX16191 is a single-channel, ultra-high accuracy supervisor circuit that monitors low core system supply voltages. The reset output asserts when the monitored supply voltage falls outside of the factory-trimmed undervoltage/overvoltage threshold window. The reset output deasserts after reset timeout period when the monitored supply voltage falls within the threshold window. The reset output is active-low and available in open-drain or push-pull configuration. ● ● ● ● ● ● The MAX16191’s nominal input voltage level is factoryprogrammable to any voltage between 0.6V to 0.9V. Together with the ±2% to ±5% undervoltage/overvoltage window threshold range, the MAX16191 offers the flexibility to monitor a wide range of system supply voltages. The undervoltage/overvoltage threshold levels are factory programmable and are symmetrical with respect to the nominal input voltage setting. The MAX16191 is available in a small, 2mm x 2mm, 8-pin TDFN side-wettable package and operates over the automotive temperature range of -40°C to +125°C. Applications ● ● ● ● Advanced Driver-Assistance Systems (ADAS) Multivoltage ASICs Servers Storage Equipment 19-101154; Rev 0; 8/21 ±0.35% Threshold Accuracy AEC-Q100 Qualified 0.6V to 0.9V Nominal Threshold Range ±2% to ±5% UV/OV Monitoring Range Open-Drain/Push-Pull Reset Output Options 8-Pin TDFN, 2mm x 2mm Side-Wettable Flanks with No Exposed Pad ● -40°C to +125°C Temperature Range Ordering Information appears at end of data sheet. Typical Application Diagram VBAT DC-DC IN 0.6V – 0.9V OUT EN 1.7 V - 5V VCC IN VDD MAX16191 RST GND RST µC GND MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit TABLE OF CONTENTS General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Typical Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 TDFN (T822CY+2C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8-Pin TDFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Functional Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Reset Timeout Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Setting Input Thresholds and Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Power-Supply Bypassing/Noise Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Selector Guide Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 www.maximintegrated.com Maxim Integrated | 2 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit LIST OF FIGURES Figure 1. Reset Output Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 2. Undervoltage/Overvoltage Threshold Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 3. Undervoltage/Overvoltage Threshold Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 www.maximintegrated.com Maxim Integrated | 3 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit LIST OF TABLES .............................................................................................. 1 www.maximintegrated.com Maxim Integrated | 4 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Absolute Maximum Ratings VDD to GND.............................................................. -0.3V to +6V IN, RST to GND ........................................................ -0.3V to +6V Input/Output Continuous Current ...................................... ±20mA Continuous Power Dissipation (TA = +70°C) T822CY+2C, 8-Pin TDFN (Multilayer derate 6.2mW/°C above 70°C) ............................................................................. 496mW Operating Temperature Range ...........................-40°C to +125°C Junction Temperature ....................................................... +150°C Soldering Temperature (Reflow) ....................................... +260°C Storage Temperature Range ..............................-65°C to +150°C Lead Temperature (Soldering, 10s) .................................. +300°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. Package Information 8 TDFN (T822CY+2C) Package Code T822CY+2C Outline Number 21-100341 Land Pattern Number 90-100117 Thermal Resistance, Single Layer Board: Junction to Ambient (θJA) Junction to Case Thermal Resistance (θJC) Thermal Resistance, Four Layer Board: Junction to Ambient (θJA) 162 Junction to Case Thermal Resistance (θJC) 20 For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that +, #, 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 thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/ thermal-tutorial. www.maximintegrated.com Maxim Integrated | 5 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Electrical Characteristics (VDD = 3.3V, VIN = 0.875V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C under normal conditions, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V POWER SUPPLY Operating Voltage Range VDD Output guaranteed to be at known state. Comparators functional. 1.7 Minimum Supply Voltage VDD RST is guaranteed to be at a known logic 1.1 Supply Current IDD RST not asserted Undervoltage Lockout Threshold VUVLO VDD rising Undervoltage Lockout Hysteresis VUVLO_HYS VDD falling 1.30 V 30 55 µA 1.50 1.68 V 47 mV INPUT VOLTAGE (IN) Nominal Input Threshold Voltage Range Undervoltage/ Overvoltage Programming Range VIN_NOM TOL Reset occurs when VIN_NOM falls outside of VIN_NOM x (1±TOL) 0.6 0.9 V ±2 ±5 % of VIN_NOM INPUT THRESHOLD ACCURACY Undervoltage Threshold Accuracy VUVTH_A All VIN_TH setting, VIN_NOM falling, VUVTH = VIN_NOM x (1 - TOL%) -0.35 +0.35 % Overvoltage Threshold Accuracy VOVTH_A All VIN_TH setting, VIN_NOM rising, VOVTH = VIN_NOM x (1 + TOL%) -0.35 +0.35 % Undervoltage/ Overvoltage Hysteresis VHYS 0.15 IIN 3 Input Current %VTH 6 µA +20 % RESET OUTPUT (RST) From the time VIN enters overvoltage/ undervoltage threshold window to the time RST goes high Reset Timeout Period Accuracy tRP_A IN-to-RST Propagation Delay tD (VOVTH - 1%) to (VOVTH + 1%) 5 µs IN-to-RST Reset Propagation Delay tD (VUVTH + 1%) to (VUVTH - 1%) 5 µs -20 OUTPUT VOLTAGE Output Voltage Low VOL VDD ≥ 4.25V, ISINK = 1mA 0.1 VDD = 2.5V, ISINK = 250µA 0.1 VDD = 1.2V, ISINK = 25µA 0.1 V Note 1: Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. www.maximintegrated.com Maxim Integrated | 6 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Typical Operating Characteristics (VDD = 1.7V to 5.5V, TA = TMIN to TMAX unless otherwise noted.) INPUT CURRENT vs. INPUT VOLTAGE SUPPLY CURRENT vs. SUPPLY VOLTAGE toc01 42 TA = +125°C TA = +25°C 32 30 28 TA = -40°C 26 TA = +125°C 3 TA = +25°C 2.8 2.6 TA = -40°C 2.4 24 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0.6 0.65 SUPPLY VOLTAGE (V) toc04 0.7 0.75 0.8 0.85 UNDERVOLTAGE THRESHOLD (V) 10.4 10.2 10 9.8 9.6 9.4 9 85 UVLO TH-HYS 0.8494 0.8492 UVLO TH 0.849 0.8488 110 toc07 1.5 1.4 1.3 1.2 SUPPLY VOLTAGE (V) www.maximintegrated.com OV TH-HYS 0.9002 0.9 -40 -15 5 5.5 10 35 60 85 110 TEMPERATURE (°C) OV PROPAGATION DELAY vs. SUPPLY VOLTAGE (OD=100mV) toc08 toc09 2 TEMP = 25°C TEMP = 25°C 1.8 2.5 2.4 2.3 2.2 2 4.5 0.9004 110 2.6 1 4 85 2.7 2.1 3.5 60 2.8 1.1 3 35 OV PROPAGATION DELAY (µs) 1.6 2.5 10 3 UV PROPAGATION DELAY (µs) 1.7 2 OV TH 0.9006 0.8996 -15 2.9 1.8 1.5 0.901 0.9008 UV PROPAGATION DELAY vs. SUPPLY VOLTAGE (OD=1% of TH) TEMP = 25°C 110 toc06 TEMPERATURE (°C) 2 85 0.8998 -40 UV PROPAGATION DELAY vs. SUPPLY VOLTAGE (OD=100mV) 60 VDD = 3.3V 0.9012 0.8498 0.8496 35 0.9014 VDD = 3.3V TEMPERATURE (°C) 1.9 10 OVERVOLTAGE THRESHOLD vs. TEMPERATURE 0.8484 60 -15 TEMPERATURE (°C) 0.8486 9.2 35 26 -40 toc05 0.85 10.6 10 28 22 0.9 0.8502 VDD = 3.3V -15 30 UNDERVOLTAGE THRESHOLD vs. TEMPERATURE 11 -40 32 INPUT VOLTAGE (V) RESET TIMEOUT PERIOD vs. TEMPERATURE 10.8 34 24 2.2 OVERVOLTAGE THRESHOLD (V) 34 3.2 SUPPLY CURRENT (µA) INPUT CURRENT ( µA) SUPPLY CURRENT ( µA) 36 36 22 RESET TIMEOUT PERIOD (ms) VDD = 3.3V 38 3.4 38 toc03 40 VDD = 3.3V 40 UV PROPAGATION DELAY (µs) SUPPLY CURRENT vs. TEMPERATURE toc02 3.6 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 1.5 2 2.5 3 3.5 4 4.5 SUPPLY VOLTAGE (V) 5 5.5 1.5 2 2.5 3 3.5 4 4.5 5 5.5 SUPPLY VOLTAGE (V) Maxim Integrated | 7 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Typical Operating Characteristics (continued) (VDD = 1.7V to 5.5V, TA = TMIN to TMAX unless otherwise noted.) OV PROPAGATION DELAY vs. SUPPLY VOLTAGE (OD=1% of TH) 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2 1.5 2 2.5 3 3.5 4 4.5 SUPPLY VOLTAGE (V) www.maximintegrated.com 5 1.8 UNDERVOLTAGE LOCKOUT THRESHOLD (V) TEMP = 25°C 5.5 MINIMUM OVERDRIVE DURATION vs. OVERDRIVE toc11 VDD = 3.3V 1.7 1.6 UVLO TH 1.5 1.4 UVLO TH-HYS 1.3 toc12 10 MINIMUM OVERDRIVE DURATION (µs) 3 2.9 OV PROPAGATION DELAY (µs) UNDERVOLTAGE LOCKOUT vs. TEMPERATURE toc10 VDD = 3.3V 9 8 UNDERVOLTAGE DURATION 7 6 OVERVOLTAGE DURATION 5 4 3 2 1 0 1.2 -40 -15 10 35 60 TEMPERATURE (°C) 85 110 0 20 40 60 80 100 120 140 160 180 200 OVERDRIVE (mV) Maxim Integrated | 8 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Pin Configuration 8-Pin TDFN TOP VIEW VDD 1 8 N.C IN 2 7 RST N.C. 3 6 N.C GND 4 5 N.C. MAXIM MAX16191 2mm x 2mm 8-TDFN Pin Description PIN NAME 1 VDD 2 IN FUNCTION Supply Input. Bypass VDD to ground with a 0.1µF capacitor. Monitoring Input. IN monitors supply rails for undervoltage/overvoltage faults with respect to the nominal input setting. When VIN falls outside the undervoltage/overvoltage thresholds' window, RST asserts and stays asserted for the reset timeout period after VIN falls within the undervoltage/ overvoltage thresholds' window. 3 N.C. No Connect 4 GND Ground 5, 6 N.C. No Connect 7 RST Acitve-Low Open-Drain Reset Output 8 N.C. No Connect www.maximintegrated.com Maxim Integrated | 9 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Functional Diagrams Functional Block Diagram VDD VREF BANDGAP BLOCK IN VREF OSC TRIM UVLO VREF DELAY COMPARATORS TRIM DRIVER RST MAX16191 INTERNAL BLOCK DIAGRAM GND www.maximintegrated.com Maxim Integrated | 10 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Detailed Description The MAX16191 is a low voltage, 0.35% accurate window-detector supervisor circuit that monitors a single system supply voltage. The MAX16191 offers factory-trimmed nominal input voltage levels from 0.6V to 0.9V and a factory-trimmed undervoltage/overvoltage thresholds' window from ±2% to ±5%. Contact Maxim Integrated for a threshold not listed in the Ordering Information table. Reset Timeout Period The active-low, open-drain reset output (RST) asserts low when the input voltage falls outside the set undervoltage and overvoltage window threshold. The reset output deasserts after the reset timeout period when the input voltage falls within the set window threshold. At power-up, resets stay asserted for the reset timeout period once VDD is above the UVLO. The reset output is available in open-drain or push-pull option.The reset output with open-drain configuration requires a pullup resistor. See Figure 1 for more details. VIN_NOM VTH_OV VTH_UV VTH_UV + VHYS tRP VTH_OV - VHYS tRP VRST Figure 1. Reset Output Timing Diagram www.maximintegrated.com Maxim Integrated | 11 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Applications Information Setting Input Thresholds and Hysteresis The MAX16191 monitors a system supply voltage for undervoltage/overvoltage window-threshold. Depending on the system supply tolerance requirement, the undervoltage/overvoltage thresholds can be factory-trimmed from ±2% to ±5%. The tolerance setting is symmetrical with respect to the selected nominal input threshold voltage. The following is a detailed calculation of how to determine the undervoltage/overvoltage threshold levels with ±3% threshold accuracy. VIN_NOM = 0.875V TOL = ±3% VUVTH = VIN_NOM (1 − 3%) = 0.875V x (1 − 0.03) = 0.875V − 0.02625V = 0.84875V VOVTH = VIN_NOM (1 + 3%) = 0.875V x (1 + 0.03) = 0.875V + 0.02625V = 0.90125V Where VIN_NOM is the selected nominal input threshold voltage, TOL is the input tolerance, VUVTH is undervoltage threshold voltage, and VOVTH is the overvoltage threshold voltage. The MAX16191 monitors the supply voltage with ±0.35% accuracy over the operating temperature and supply range. The accuracy range for the 0.875V ±0.35% is shown as follows: VUVTH_A = VIN_NOM (1 - 3% ±0.35%) VOVTH_A = VIN_NOM (1 + 3% ±0.35%) Where VUVTH_A is the undervoltage threshold accuracy range and VOVTH_A is the overvoltage threshold accuracy range. See Figure 2 for details. Figure 2. Undervoltage/Overvoltage Threshold Accuracy www.maximintegrated.com Maxim Integrated | 12 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Hysteresis adds noise immunity to the voltage monitors and prevents oscillation due to repeated triggering when the monitored voltage is near the threshold trip voltage. Use the following equation to calculate the threshold hysteresis: VIN_NOM = 0.875V Hysteresis = 0.15% VHYST = 0.875V x 0.15% = 0.001313V Figure 3. Undervoltage/Overvoltage Threshold Hysteresis Power-Supply Bypassing/Noise Immunity The MAX16191 operates from a 1.7V to 5.5V supply. Bypass VDD to ground with a 0.1μF capacitor as close to the device as possible. An additional capacitor improves transient immunity. Selector Guide Table PART NUMBER THRESHOLD VOLTAGE TOLERANCE HYSTERESIS RESET TIMEOUT MAX16191ATA00/VY+T 0.875V 3% 0.15% 10ms www.maximintegrated.com Maxim Integrated | 13 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Typical Application Circuits Typical Application Circuit VBAT DC-DC IN 0.6V – 0.9V OUT EN 1.7 V - 5V VCC IN VDD MAX16191 RST GND RST µC GND Ordering Information PART NUMBER MAX16191ATA00/VY+T TEMPERATURE RANGE PIN-PACKAGE -40°C to +125°C 8-TDFN +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. /V denotes an automotive qualified part. Y = Side-wettable package. www.maximintegrated.com Maxim Integrated | 14 MAX16191 Ultra-High, 0.35% Accuracy Supervisory Circuit Revision History REVISION NUMBER REVISION DATE 0 8/21 DESCRIPTION Release for Market Intro PAGES CHANGED — For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html. 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. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2021 Maxim Integrated Products, Inc.