XXRRPP66333366 Triple Power Supervisory Circuit Triple Power Supervisory Circuit wwiitth h WWaattcchhddoogg aanndd PPoowweer r FFaaiill April 2011 Rev. 1.0.0 GENERAL DESCRIPTION APPLICATIONS The XRP6336, a triple Power supervisory Power Supplies Monitoring circuit, is a microprocessor reset supervisory DSPs/FPGAs Supplies Monitoring circuit with multiple reset voltages. The XRP6336 provides low voltage monitoring FEATURES ability for up-to three supplies with two precision factory-set thresholds and one user Low operating voltage of 1.6V defined custom threshold. This circuit Low operating current of 20 A typical performs a single function: if any of the input supply voltages drops below its associated Monitors up to 3 supplies threshold, reset outputs are asserted. The simultaneously XRP6336 offers power fail and watchdog Adjustable inputs monitor down to functionalities. 0.5V The XRP6336 is offered in a RoHS compliant, Reset asserted down to 0.9V lead free 8-pin TSOT package and is fully specified over the -40C to +85C 4% accuracy over temperature range temperature range. Power Fail Input Functionality (PFI) Power Fail Output function, active low (PFOB) Open Drain (OD) or CMOS RSTB output 4 Reset Timeout Periods 50ms, 100ms, 200ms and 400 ms Watch Dog Input Functionality RoHS Compliant Lead Free 8 pin TSOT Package TYPICAL APPLICATION DIAGRAM Fig. 1: XRP6336 Application Diagram Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 Fax. +1 510 668-7001 XXRRPP66333366 Triple Power Supervisory Circuit Triple Power Supervisory Circuit wwiitth h WWaattcchhddoogg aanndd PPoowweer r FFaaiill ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of Input Voltage Range .................................... 0.9V to 5.5V the device at these ratings or any other above those Operating Temperature Range ................... -40C to 85C indicated in the operation sections of the specifications Thermal Resistance .....................................134C/W JA below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Terminal Voltage (with respect to GND) V1, V2 ..................................................... -0.3V to 6.0V Open-Drain RSTB, PFOB ............................. -0.3V to 6.0V CMOS RST, RSTB ............................. -0.3V to (V1+0.3V) Input Current/Output Current ................................ 20mA V3, V4, PFI, WDI .............................. -0.3V to (V1+0.3V) Storage Temperature .............................. -65C to 150C Power Dissipation ................................ Internally Limited Lead Temperature (Soldering, 10 sec) ................... 300C ESD Rating (HBM - Human Body Model) .................... 2kV ESD Rating (MM - Machine Model) ........................... 500V ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Ambient Temperature of T = 25C only limits applying over the full A Operating Ambient Temperature range are denoted by a . Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T = 25C, and are provided A for reference purposes only. Unless otherwise indicated, V1 = 1.6V to 5.5V, T = 40C to 85C. A Parameter Min. Typ. Max. Units Conditions Operating Voltage Range 0.9 5.5 V T =-40C to +85C A 20 30 V1<5.5V, V2<3.6V, all I/O pins open Supply Current A 15 25 V1<3.6V, V2<2.75V, all I/O pins open 4.532 4.625 4.718 Z (valid for V1 falling) 4.287 4.375 4.463 Y (valid for V1 falling) 3.075 3.168 X (valid for V1 falling) 2.900 2.925 2.984 W (valid for V1 falling) 2.866 V1 Reset Threshold 2.572 2.625 2.678 V V (valid for V1 falling) 2.273 2.320 2.367 U (valid for V1 falling) 2.146 2.190 2.234 T (valid for V1 falling) 1.670 1.704 S (valid for V1 falling) 1.636 1.580 1.612 R (valid for V1 falling) 1.548 2.266 2.313 2.360 J (valid for V2 falling) 2.144 2.188 2.232 I (valid for V2 falling) 1.665 1.698 H (valid for V2 falling) 1.631 1.575 1.607 G (valid for V2 falling) 1.543 1.360 1.388 1.416 F (valid for V2 falling) V2 Reset Threshold V 1.286 1.313 1.340 E (valid for V2 falling) 1.053 1.110 1.152 D (valid for V2 falling) 1.050 1.071 C (valid for V2 falling) 1.029 0.833 0.850 B (valid for V2 falling) 0.816 0.772 0.788 0.804 A (valid for V2 falling) Threshold 1 tempco 0.06 mV/C Threshold 2 tempco 0.04 mV/C Threshold 1 Hysteresis 0.65 % Referenced to Vth1 typical Threshold 2 Hysteresis 0.5 % Referenced to Vth2 typical 2011 Exar Corporation 2/10 Rev. 1.0.0