MAX16055 19-4411 Rev 0 1/09 Ultra-Small, Hex Voltage, Microprocessor Supervisor General Description Features The MAX16055 precision hex voltage microprocessor Precision Factory-Set Reset Threshold Options (P) supervisory circuit monitors up to six system-sup- 3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 1.0V, and ply voltages and asserts a single reset when any one 0.9V supply voltage drops below its preset threshold. The Adjustable Voltage Threshold Monitors Down to device significantly reduces system size and compo- nent count while improving reliability compared to multi- 0.5V with 1.5% Accuracy ple ICs or discrete components. Open-Drain RESET Output with 70A Internal A variety of factory-trimmed threshold voltages are avail- Pullup able to accommodate different supply voltages and tol- Fixed 140ms (min) Reset Timeout Period erance with minimal external components. The MAX16055 includes internally fixed threshold options for Manual Reset Input monitoring 3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 1.0V, Reset Valid for IN1 1V or IN2 1V and 0.9V supplies with -5% or -10% tolerance. The MAX16055 is also available with one to five adjustable Tolerance Select (5%/10%) Input threshold inputs to monitor voltages down to 0.5V. Immune to Short Supply Transients A single active-low, open-drain output asserts when any monitored input falls below its associated thresh- old. The reset output features a weak internal pullup Ordering Information (typically 70A) to supply input IN1. The reset output remains low for the reset timeout period (140ms, min) PART TEMP RANGE PIN-PACKAGE after all voltages rise above the selected thresholds. MAX16055 AUB+* -40C to +125C 10 MAX The reset output remains valid as long as either IN1 or IN2 input voltage is above 1V. The MAX16055 is avail- +Denotes a lead(Pb)-free/RoHS-compliant package. able in a small 10-pin MAX (3mm x 3mm) package. *Insert the desired threshold option letter from the Selector The MAX16055 operates over the -40C to +125C Guide into the blank to complete the part number. Contact factory automotive temperature range. for availability. Applications Telecommunications Networking Equipment Typical Operating Circuit High-End Printers Industrial Equipment Desktop and Notebook Set-Top Boxes Computers Servers/Workstations Data Storage Equipment MAX16055 MAX is a registered trademark of Maxim Integrated Products, Inc. 10k V CC IN1 Pin Configuration 0.1F P RESET MONITORED SUPPLIES TOP VIEW IN2 IN3 IN1 1 + 10 GND IN4 IN5 IN2 2 9 RESET IN6 IN3 3 8 MR MR MAX16055 IN4 4 7 TOL GND TOL IN5 5 6 IN6 MAX 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.Ultra-Small, Hex Voltage, Microprocessor Supervisor ABSOLUTE MAXIMUM RATINGS RESET, TOL, MR, IN to GND..................................-0.3V to +6V Operating Temperature Range .........................-40C to +125C Storage Temperature Range .............................-65C to +150C Input/Output Current (all pins) ............................................20mA Continuous Power Dissipation (T = +70C) Junction Temperature......................................................+150C A Lead Temperature (soldering, 10s) .................................+300C 10-Pin MAX (derate 5.6mW/C above +70C) ...........444mW 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 = 1V to 5.5V, T = -40C to +125C, unless otherwise noted. Typical values are at V = 3.3V, T = +25C.) (Note 1) IN1 A IN1 A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Operating Voltage Range V (Note 2) 1.0 5.5 V IN1 V = nominal input voltage (for IN2IN6 IN 3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 25 40 1.0V, 0.9V supplies) Input Current (Note 3) I A IN V = nominal input voltage (for +3.3V IN1 IN1 55 115 supply) V = 0 to 0.5V or V (for adjustable IN ADJ -0.1 +0.1 thresholds) 3.3V, TOL = GND 3.00 3.08 3.15 3.3V, TOL = V 2.85 2.93 3.00 IN1 3.0V, TOL = GND 2.70 2.78 2.85 3.0V, TOL = V 2.55 2.63 2.70 IN1 2.5V, TOL = GND 2.25 2.32 2.38 2.5V, TOL = V 2.13 2.19 2.25 IN1 1.8V, TOL = GND 1.62 1.67 1.71 1.8V, TOL = V 1.53 1.58 1.62 IN1 1.5V, TOL = GND 1.355 1.389 1.425 Threshold Voltage V V decreasing V TH IN 1.5V, TOL = V 1.283 1.316 1.350 IN1 1.2V, TOL = GND 1.084 1.112 1.140 1.2V, TOL = V 1.027 1.053 1.08 IN1 1.1V, TOL = GND 0.993 1.019 1.045 1.1V, TOL = V 0.941 0.965 0.99 IN1 1.0V, TOL = GND 0.903 0.926 0.95 1.0V, TOL = V 0.856 0.878 0.90 IN1 0.9V, TOL = GND 0.813 0.834 0.855 0.9V, TOL = V 0.770 0.790 0.810 IN1 2 MAX16055