DICE SPECIFICATION LTC2904/LTC2905 Precision Dual Supply Monitors with Pin-Selectable Thresholds 1 2 PAD FUNCTION 3 1. GND 2. RST 3. RST/TMR 4. V2 5. GND 6. V1 7. S2 8. S1 9. TOL Note: Connect Backside Substrate to GND 9 8 7 4 DIE CROSS REFERENCE 6 LTC Finished Part Number Order DICE CANDIDATE Part Number Below LTC2904CDDB LTC2904 DICE LTC2905CDDB LTC2905 DICE , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 5 83 x 23 mils ELECTRICAL CHARACTERISTICS V1 = 2.5V, V2 = 1V, S1 = TOL = V1, S2 = 0V, unless otherwise noted. (Notes 1, 2) SYMBOL VRT50 VRT33 VRT25 VRT18 VRT15 VRT12 VRT10 PARAMETER 5V, 5% Reset Threshold 5V, 7.5% Reset Threshold 5V, 10% Reset Threshold 3.3V, 5% Reset Threshold 3.3V, 7.5% Reset Threshold 3.3V, 10% Reset Threshold 2.5V, 5% Reset Threshold 2.5V, 7.5% Reset Threshold 2.5V, 10% Reset Threshold 1.8V, 5% Reset Threshold 1.8V, 7.5% Reset Threshold 1.8V, 10% Reset Threshold 1.5V, 5% Reset Threshold 1.5V, 7.5% Reset Threshold 1.5V, 10% Reset Threshold 1.2V, 5% Reset Threshold 1.2V, 7.5% Reset Threshold 1.2V, 10% Reset Threshold 1V, 5% Reset Threshold 1V, 7.5% Reset Threshold 1V, 10% Reset Threshold CONDITIONS V1 Input Threshold V1, V2 Input Threshold V1, V2 Input Threshold V2 Input Threshold V2 Input Threshold V2 Input Threshold V2 Input Threshold MIN 4.600 4.475 4.350 3.036 2.954 2.871 2.300 2.238 2.175 1.656 1.611 1.566 1.380 1.343 1.305 1.104 1.074 1.044 0.920 0.895 0.870 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. MAX 4.750 4.625 4.500 3.135 3.053 2.970 2.375 2.313 2.250 1.710 1.665 1.620 1.425 1.388 1.350 1.140 1.110 1.080 0.950 0.925 0.900 UNITS V V V V V V V V V V V V V V V V V V V V V 1 DICE SPECIFICATION LTC2904/LTC2905 ELECTRICAL CHARACTERISTICS V1 = 2.5V, V2 = 1V, S1 = TOL = V1, S2 = 0V, unless otherwise noted. (Notes 1, 2) SYMBOL PARAMETER VCCMIN Minimum Internal Operating Voltage (Note 1) RST in Correct Logic State CONDITIONS MIN IV1 V1 Input Current IV2 V2 Input Current ITMR(UP) TMR Pull-Up Current (LTC2905) VTMR = 0V -1.5 ITMR(DOWN) TMR Pull-Down Current (LTC2905) VTMR = 1.4V 1.5 2.7 A tRST Reset Time-Out Period (LTC2904) 140 260 ms tRST Reset Time-Out Period (LTC2905) CTMR = 22nF 140 260 ms VOL Output Voltage Low RST, RST I = 2.5mA I = 100A; V1 = 1V (RST Only) 0.4 0.3 V V VOH Output Voltage High RST, RST (Notes 1, 3) I = -1A Includes Input Current to Three-State Pins MAX UNITS 1 V 130 A 1.0 A -2.7 A VCC -1 V Three-State Inputs S1, S2, TOL VIL Low Level Input Voltage VIH High Level Input Voltage VZ Pin Voltage when Left in Open State IVPG 0.4 1.4 I = -10A I = 10A Note 1: The greater of V1, V2 is the internal supply voltage (VCC). Note 2: All currents into pins are positive; all voltages are referenced to GND unless otherwise noted. Note 3: The output pins RST and RST have an internal pull-up to VCC of typically -6A. However, an external pull-up resistor may be used when faster rise time is required or for VOH voltages greater than VCC. V 0.7 Programming Input Current (Note 4) V 1.1 V V 25 A Note 4: The input current to the three-state input pins are the pull-up and the pull-down current when the pins are either set to V1 or GND respectively. In the open state, the maximum leakage current to V1 or GND permissible is 10A. Wafer level testing is performed per the indicated specifications for dice. Considerable differences in performance can often be observed for dice versus packaged units due to the influences of packaging and assembly on certain devices and/or parameters. Please consult factory for more information on dice performance and lot qualifications via lot sampling test procedures. Dice data sheet subject to change. Please consult factory for current revision in production. I.D.No. 66-13-29045 2 Linear Technology Corporation LT 1105 PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 2005