LTC4368 100V UV/OV and Reverse Protection Controller with Bidirectional Circuit Breaker FEATURES DESCRIPTION n The LTC 4368 protects applications from power supply Wide Operating Voltage Range: 2.5V to 60V n voltages that may be too high, too low, or even negative Overvoltage Protection to 100V n and from overcurrent faults in both forward and reverse Reverse Supply Protection to 40V n directions. The LTC4368 controls the gate voltage of a pair Bidirectional Electronic Circuit Breaker: n of external N-channel MOSFETs to ensure that the load +50mV Forward Sense Threshold n is connected to the input supply only when there are no 50mV Reverse (LTC4368-1) n voltage or current faults. 3mV Reverse (LTC4368-2) n Adjustable 1.5% Undervoltage and Overvoltage Two comparator inputs allow configuration of the over- Thresholds voltage (OV) and undervoltage (UV) set points using an n Low Operating Current: 80A external resistive divider. A current sense resistor sets the n Low Shutdown Current: 5A forward and reverse circuit breaker current thresholds. n Controls Back-to-Back N-Channel MOSFETs After a forward current fault, the LTC4368 will either latch- n Blocks 50Hz and 60Hz AC Power off power, or retry after a user adjustable delay. After a n Hot Swappable Supply Input reverse current fault, the LTC4368 waits for the output to n Pin-Selectable Overcurrent Auto-Retry Timer or Latchoff fall 100mV below the input to reconnect power to the load. n 10-Pin MSOP and 3mm 3mm DFN Packages The LTC4368 has a 32ms turn-on delay that debounces live supply input connections and blocks 50Hz and 60Hz APPLICATIONS AC power. UV/OV faults also trigger the 32ms recovery n Reverse Battery Protection delay before the external MOSFETs are turned back on. n Portable Instrumentation All registered trademarks and trademarks are the property of their respective owners. n Automotive and Industrial Surge Protection n Energy Storage Systems TYPICAL APPLICATION Load Protected from Reverse and Overvoltage at V 24V Application with 10A Circuit Breaker IN +50mV V OUT 40V TO 100V 0.005 7V TO 36V SiR870 SiR870 OV = 36V V I IN OUT +70V UV = 7V 24V 0.6A TO 10A INRUSH + 20V/DIV V IN CONTROL 3mV 100F 22k VALID WINDOW 3.3nF SENSE V GATE OUT V IN GND V V OUT OUT 464k FAULT SHDN 1500k 40V LTC4368-2 20V/DIV V IN 1200ms COOLDOWN UV AFTER FORWARD OV = 36V 121k OC FAULT UV = 7V OV RETRY 4368 TA01b 200ms/DIV 29.4k 0.22F GND 4368 TA01a Rev A 1 Document Feedback For more information www.analog.comLTC4368 ABSOLUTE MAXIMUM RATINGS (Note 1, Note 2) Supply Voltage Output Voltages V ........................................................ 40V to 100V FAULT (Note 3) ....................................... 0.3V to 80V IN Input Voltages GATE .............................................. 40V to V + 14V IN UV, SHDN (Note 3) .........................0.3V to 80V Input Currents OV (Note 3) ............................................ 0.3V to 20V RETRY, UV, OV ,SHDN, FAULT ...........................1mA RETRY (Note 3) ....................................... 0.3V to 5V Operating Ambient Temperature Range V , SENSE ............................................10V to 80V LTC4368C ............................................... 0C to 70C OUT V to SENSE .........................................10V to 10V LTC4368I ............................................ 40C to 85C OUT V to V ........................................... 60V to 100V LTC4368H ....................................... 40C to 125C IN OUT Storage Temperature Range ................. 65C to 150C Lead Temperature (Soldering, 10 sec) MSOP Package .................................................300C PIN CONFIGURATION TOP VIEW V 1 10 GATE TOP VIEW IN UV 2 9 SENSE V 1 10 GATE IN UV 2 9 SENSE OV 3 8 V OUT OV 3 8 V OUT RETRY 4 7 FAULT RETRY 4 7 FAULT GND 5 6 SHDN GND 5 6 SHDN MS10 PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE T = 150C, = 160C/W JMAX JA 10-LEAD (3mm 3mm) PLASTIC DFN EXPOSED PAD (PIN 11) PCB GROUND CONNECTION OPTIONAL T = 150C, = 43C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4368CDD-1 PBF LTC4368CDD-1 TRPBF LGTH 10-Lead (3mm 3mm) Plastic DFN 0C to 70C LTC4368CDD-2 PBF LTC4368CDD-2 TRPBF LGTK 10-Lead (3mm 3mm) Plastic DFN 0C to 70C LTC4368IDD-1 PBF LTC4368IDD-1 TRPBF LGTH 10-Lead (3mm 3mm) Plastic DFN 40C to 85C LTC4368IDD-2 PBF LTC4368IDD-2 TRPBF LGTK 10-Lead (3mm 3mm) Plastic DFN 40C to 85C LTC4368HDD-1 PBF LTC4368HDD-1 TRPBF LGTH 10-Lead (3mm 3mm) Plastic DFN 40C to 125C LTC4368HDD-2 PBF LTC4368HDD-2 TRPBF LGTK 10-Lead (3mm 3mm) Plastic DFN 40C to 125C LTC4368CMS-1 PBF LTC4368CMS-1 TRPBF LTGTG 10-Lead Plastic MSOP 0C to 70C LTC4368CMS-2 PBF LTC4368CMS-2 TRPBF LTGTJ 10-Lead Plastic MSOP 0C to 70C LTC4368IMS-1 PBF LTC4368IMS-1 TRPBF LTGTG 10-Lead Plastic MSOP 40C to 85C LTC4368IMS-2 PBF LTC4368IMS-2 TRPBF LTGTJ 10-Lead Plastic MSOP 40C to 85C LTC4368HMS-1 PBF LTC4368HMS-1 TRPBF LTGTG 10-Lead Plastic MSOP 40C to 125C LTC4368HMS-2 PBF LTC4368HMS-2 TRPBF LTGTJ 10-Lead Plastic MSOP 40C to 125C *Temperature grades are identified by a label on the shipping container. Consult ADI Marketing for parts specified with wider operating temperature ranges. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev A 2 For more information www.analog.com