LTC4368 100V UV/OV and Reverse Protection Controller with Bidirectional Circuit Breaker FEATURES DESCRIPTION n Wide Operating Voltage Range: 2.5V to 60V The LTC 4368 protects applications from power supply n Overvoltage Protection to 100V voltages that may be too high, too low, or even negative n Reverse Supply Protection to 40V and from overcurrent faults in both forward and reverse n Bidirectional Electronic Circuit Breaker: directions. The LTC4368 controls the gate voltage of a pair n +50mV Forward Sense Threshold of external N-channel MOSFETs to ensure that the load n 50mV Reverse (LTC4368-1) is connected to the input supply only when there are no n 3mV Reverse (LTC4368-2) voltage or current faults. 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 n The LTC4368 has a 32ms turn-on delay that debounces AEC-Q100 Qualified for Automotive Applications live supply input connections and blocks 50Hz and 60Hz AC power. UV/OV faults also trigger the 32ms recovery APPLICATIONS delay before the external MOSFETs are turned back on. n Reverse Battery Protection All registered trademarks and trademarks are the property of their respective owners. n Portable Instrumentation n Automotive and Industrial Surge Protection n Energy Storage Systems TYPICAL APPLICATION 24V Application with 10A Circuit Breaker Load Protected from Reverse and Overvoltage at V IN +50mV V OUT 40V TO 100V 0.005 7V TO 36V SiR870 SiR870 V I IN OUT OV = 36V +70V 24V 0.6A TO 10A INRUSH + UV = 7V 20V/DIV V IN CONTROL 3mV 100F 22k 3.3nF VALID WINDOW SENSE V GATE OUT V IN GND V V OUT 464k OUT FAULT SHDN 1500k LTC4368-2 40V 1200ms COOLDOWN 20V/DIV V UV IN OV = 36V AFTER FORWARD 121k UV = 7V OC FAULT OV RETRY 4368 TA01b 29.4k 200ms/DIV 0.22F GND 4368 TA01a Rev. C 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 TOP VIEW V 1 10 GATE IN V 1 10 GATE IN UV 2 9 SENSE 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 10-LEAD (3mm 3mm) PLASTIC DFN JMAX JA T = 150C, = 43C/W JMAX JA EXPOSED PAD (PIN 11) PCB GROUND CONNECTION OPTIONAL 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 Rev. C 2 For more information www.analog.com