MAX16008/MAX16009 19-3869 Rev 1 1/11 Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN General Description Features The MAX16008/MAX16009 are adjustable quad window Monitor Four Undervoltage/Overvoltage Conditions voltage detectors in a small thin QFN package. These 1.5% Accuracy Over Temperature devices are designed to provide a higher level of sys- User-Adjustable Thresholds (Down to 0.4V) tem reliability by monitoring multiple supply voltages and providing a fault signal when any of the voltages Open-Drain Outputs with Internal Pullups Reduce exceed their overvoltage thresholds or fall below their the Number of External Components undervoltage thresholds. Manual Reset Input (MAX16009) These devices offer user-adjustable thresholds that Margin Enable Input allow voltages to be monitored down to 0.4V. These devices allow the upper and lower trip thresholds of Fixed or Adjustable RESET Timeout (MAX16009) each window detector to be set externally with the use Guaranteed Correct Output Logic State Down to of three external resistors. V = 1V CC Each monitored threshold has an independent open- Fully Specified from -40C to +125C drain output for signaling a fault condition. The outputs can be wire ORed together to provide a single fault Small, 4mm x 4mm TQFN Package output. The open-drain outputs are internally pulled up Ordering Information with a 30A current, but can be externally driven to other voltage levels for interfacing to other logic levels. PART TEMP RANGE PIN-PACKAGE Both devices feature a margin input to disable the out- MAX16008TP+ -40C to +125C 20 TQFN puts during margin testing or any other time after MAX16009TG+ -40C to +125C 24 TQFN power-up operations. The MAX16009 offers a reset out- +Denotes a lead(Pb)-free/RoHS-compliant package. put that deasserts after a reset timeout period after all For tape-and-reel, add a T after the +. Tape-and-reel are voltages are within their threshold specifications. The offered in 2.5k increments. reset timeout is internally set to 140ms (min), but can be externally adjusted to other reset timeouts using an external capacitor. In addition, the MAX16009 offers a Typical Operating Circuit manual reset input. 3.5V 2.5V All devices are offered in a 4mm x 4mm TQFN package V V CC CC RESET RESET 1.8V and are fully specified from -40C to +125C. C UVIN1 UVOUT1 1.5V GND Applications OVIN1 OVOUT1 Storage Equipment Networking/Telecommunications Equipment UVIN2 UVOUT2 Multivoltage ASICs MAX16009 Servers OVIN2 OVOUT2 UVIN3 UVOUT3 OVOUT3 OVIN3 UVIN4 UVOUT4 OVIN4 OVOUT4 GND Pin Configurations and Selector Guide appear at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN ABSOLUTE MAXIMUM RATINGS V , OVOUT , UVOUT , RESET, Operating Temperature Range .........................-40C to +125C CC Junction Temperature .....................................................+150C UVIN , OVIN to GND.........................................-0.3V to +6V MARGIN, MR, TOL, SRT to GND................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C CC Lead Temperature (soldering, 10s) .................................+300C Input/Output Current Soldering Temperature (reflow) .......................................+260C (RESET, MARGIN, SRT, MR, UVOUT , OVOUT ).......20mA Continuous Power Dissipation (T = +70C) A 20-Pin Thin QFN (derate 16.9mW/C above +70C) ....1355mW 24-Pin Thin QFN (derate 16.9mW/C above +70C) ....1666mW 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 (V = 2.0V to 5.5V, TOL = GND, T = -40C to +125C, unless otherwise specified. Typical values are at V = 3.3V, T = +25C.) CC A CC A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range V (Note 2) 1.0 5.5 V CC V = 3.3V, outputs deasserted 45 65 CC Supply Current (Note 3) I A CC V = 5V, outputs deasserted 45 70 CC UVLO (Undervoltage Lockout) V V rising 1.62 1.8 1.98 V UVLO CC UVIN /OVIN Adjustable Threshold (UVIN V 0.388 0.394 0.400 V TH Falling/OVIN Rising) UVIN falling/OVIN rising (percentage of UVIN /OVIN Hysteresis V 0.5 % V TH HYS TH the threshold) UVIN /OVIN Input Current I -100 +100 nA IB RESET SRT = V 140 200 280 CC C = 1500pF (Note 4) 2.43 3.09 3.92 SRT Reset Timeout t ms RP C = 100pF 0.206 SRT C = open 0.05 SRT SRT Ramp Current I V = 0V 460 600 740 nA SRT SRT SRT Threshold V 1.173 1.235 1.293 V TH SRT SRT Hysteresis 100 mV UVIN /OVIN to Reset Delay t UVIN falling/OVIN rising 20 s RD 2 MAX16008/MAX16009