LTC1440/LTC1441/LTC1442 Ultralow Power Single/Dual Comparator with Reference FEATURES DESCRIPTIO Ultralow Quiescent Current: 2.1A Typ (LTC1440) The LTC 1440/LTC1441/LTC1442 are ultralow power Reference Output Drives 0.01F Capacitor single and dual comparators with built-in references. The Adjustable Hysteresis (LTC1440/LTC1442) comparators feature less than 3.7A supply current over Wide Supply Range: temperature (LTC1440), a 1.182V 1% reference, pro- Single: 2V to 11V grammable hysteresis (LTC1440/LTC1442) and TTL/CMOS Dual: 1V to 5.5V outputs that sink and source current. The reference output Input Voltage Range Includes the Negative Supply can drive a bypass capacitor of up to 0.01F without TTL/CMOS Compatible Outputs oscillation. 12s Propagation Delay with 10mV Overdrive The comparators operate from a single 2V to 11V supply No Crowbar Current or a dual 1V to 5.5V supply (LTC1440). Comparator 40mA Continuous Source Current hysteresis is easily programmed by using two resistors Pin Compatible Upgrades for MAX921/922/923 and the HYST pin (LTC1440/LTC1442). Each comparators 3mm x 3mm x 0.75mm DFN Package (LTC1440) input operates from the negative supply to within 1.3V of U the positive supply. The comparator output stage can APPLICATIO S continuously source up to 40mA. By eliminating the cross-conducting current that normally happens when the Battery-Powered System Monitoring comparator changes logic states, the power supply glitches Threshold Detectors are eliminated. Window Comparators Oscillator Circuits The LTC1440 is available in 8-pin PDIP, SO, MSOP and DFN packages. The LTC1441/LTC1442 are available in , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 8-pin PDIP and SO packages. TYPICAL APPLICATIO Micropower 2.9V V Threshold Detector CC LTC1440 Supply Current vs Temperature 3.3V 5.0 + V = 5V 7 V = GND = 0V 4.5 R1 + 1.65M V 1% + 4.0 3 IN + 8 R2 3.5 OUT 1.13M 4 IN 1% 3.0 2.5 5 HYST 2.0 LTC1440 6 REF 1.5 40 20 0 20 40 60 80 100 TEMPERATURE (C) V GND 1440/1/2 TA02 21 1440 TA01 144012fd 1 SUPPLY CURRENT (A) U ULTC1440/LTC1441/LTC1442 ABSOLUTE MAXIMUM RATINGS (Note 1) + Voltage OUT Short-Circuit Duration (V 5.5V) .......Continuous + + V to V , V to GND, GND to V ...........12V to 0.3V Power Dissipation.............................................. 500mW + + IN , IN , HYST ................. (V + 0.3V) to (V 0.3V) Operating Temperature Range + REF ................................... (V + 0.3V) to (V 0.3V) LTC144XC ............................................... 0C to 70C + OUT (LTC1440) .............. (V + 0.3V) to (GND 0.3V) LTC144XI ........................................... 40C to 85C + OUT (LTC1441/LTC1442) ... (V + 0.3V) to (V 0.3V) Storage Temperature Range ................. 65C to 150C Current Storage Temperature Range + IN , IN , HYST ................................................. 20mA (DD Package) ................................... 65C to 125C REF ................................................................... 20mA Junction Temperature........................................... 150C OUT .................................................................. 50mA Junction Temperature (DD Package) .................... 125C Lead Temperature (Soldering, 10 sec).................. 300C PACKAGE/ORDER INFORMATION TOP VIEW TOP VIEW GND 1 8 OUT TOP VIEW GND 1 8 OUT + V 2 7 V + GND 1 8 OUT V 2 V 7 + + V 2 7 V IN REF 3 6 + + IN 3 6 REF IN 3 6 REF IN HYST 4 5 IN 4 5 HYST IN 4 5 HYST MS8 PACKAGE DD PACKAGE 8-LEAD PLASTIC MSOP N8 PACKAGE S8 PACKAGE 8-LEAD (3mm 3mm) PLASTIC DFN 8-LEAD PDIP 8-LEAD PLASTIC SO T = 150C, = 250C/ W JMAX JA T = 125C, = 160C/ W (DD) T = 150C, = 130C/ W (N8) JMAX JA JMAX JA UNDERSIDE METAL CONNECTED TO V T = 150C, = 175C/ W (S8) JMAX JA (PCB CONNECTION OPTIONAL) DD8 PART S8 PART ORDER PART ORDER PART MS8 PART ORDER PART MARKING NUMBER MARKING* NUMBER MARKING* NUMBER LTC1440CMS8 LTC1440CDD LBTH LTC1440CN8 1440 LTBX LTC1440IMS8 LTC1440IDD LTC1440CS8 1440 LTC1440IN8 1440I LTC1440IS8 1440I ORDER PART ORDER PART TOP VIEW TOP VIEW NUMBER NUMBER OUT A 1 8 OUT B OUT A 1 8 OUT B LTC1441CN8 LTC1442CN8 + + V 2 V V 2 7 V 7 LTC1441CS8 LTC1442CS8 + + + IN A 3 6 REF IN A 3 6 IN B LTC1441IN8 LTC1442IN8 IN A 4 IN B IN B 4 5 HYST 5 LTC1441IS8 LTC1442IS8 S8 PART S8 PART N8 PACKAGE S8 PACKAGE N8 PACKAGE S8 PACKAGE 8-LEAD PDIP 8-LEAD PLASTIC SO 8-LEAD PDIP 8-LEAD PLASTIC SO MARKING MARKING T = 150C, = 130C/ W (N8) T = 150C, = 130C/ W (N8) JMAX JA JMAX JA T = 150C, = 175C/ W (S8) 1441 1442 T = 150C, = 175C/ W (S8) JMAX JA JMAX JA 1441I 1442I Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: