DC1555C-B Analog Devices

LTC4365 Overvoltage, Undervoltage and Reverse Supply Protection Controller FEATURES DESCRIPTION n The LTC 4365 protects applications where power supply Wide Operating Voltage Range: 2.5V to 34V n input voltages may be too high, too low or even negative. Overvoltage Protection to 60V n It does this by controlling the gate voltages of a pair of Reverse Supply Protection to 40V n external N-channel MOSFETs to ensure that the output LTC4365: Blocks 50Hz and 60Hz AC Power n stays within a safe operating range.The LTC4365 can LTC4365-1: Fast (1ms) Recovery from Fault n withstand voltages between 40V and 60V and has an No Input Capacitor or TVS Required for Most operating range of 2.5V to 34V, while consuming only Applications n 125A in normal operation. Adjustable Undervoltage and Overvoltage Protection Range Two comparator inputs allow configuration of the over- n Charge Pump Enhances External N-Channel MOSFET voltage (OV) and undervoltage (UV) set points using an n Low Operating Current: 125A external resistive divider. A shutdown pin provides external n Low Shutdown Current: 10A control for enabling and disabling the MOSFETs as well n Compact 8-Lead, 3mm 2mm DFN and as placing the device in a low current shutdown state. A TSOT-23 (ThinSOT) Packages fault output provides status of the gate pin pulling low. A n AEC-Q100 Qualified for Automotive Applications fault is indicated when the part is in shutdown or the input voltage is outside the UV and OV set points. APPLICATIONS The LTC4365 has a 36ms turn-on delay that debounces live connections and blocks 50Hz to 60Hz AC power. For n Portable Instrumentation fast recovery after faults, the LTC4365-1 has a reduced n Industrial Automation 1ms turn-on delay. n Laptops n All registered trademarks and trademarks are the property of their respective owners. Protected Automotive Surge Protection by U.S. patents, including XXXXX, XXXXX. TYPICAL APPLICATION 12V Automotive Application Load Protected from Reverse and Overvoltage at V IN SiSB46DN V V IN OUT UV = 5V 12V 3A V IN OV = 18V 30V GATE VALID V V IN OUT WINDOW LTC4365 V 510k OUT GND V OUT SHDN 2740k 10V/DIV UV FAULT V IN 215k 30V OV 4365 TA01b OV = 18V 1s/DIV 84.5k GND UV = 5V 4365 TA01a Rev. B 1 Document Feedback For more information www.analog.comLTC4365 ABSOLUTE MAXIMUM RATINGS Input Currents Supply Voltage (Note 1) UV, OV, SHDN ....................................................1mA V .......................................................... 40V to 60V IN Operating Ambient Temperature Range Input Voltages (Note 3) LTC4365C ................................................ 0C to 70C UV, SHDN .............................................. 0.3V to 60V LTC4365I .............................................40C to 85C OV ............................................................ 0.3V to 6V LTC4365H .......................................... 40C to 125C V ....................................................... 0.3V to 40V OUT Storage Temperature Range .................. 65C to 150C Output Voltages (Note 4) Lead Temperature (Soldering, 10 sec) FAULT ..................................................... 0.3V to 60V for TSOT Only ...................................................300C GATE ....................................................... 40V to 45V PIN CONFIGURATION TOP VIEW TOP VIEW GND 1 8 SHDN V 1 8 GATE IN OV 2 7 FAULT 9 UV 2 7 V OUT GND UV 3 6 V OUT OV 3 6 FAULT V GATE 4 5 GND 4 5 SHDN IN TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 DDB PACKAGE T = 150C, = 195C/W 8-LEAD (3mm 2mm) PLASTIC DFN JMAX JA T = 150C, = 76C/W JMAX JA EXPOSED PAD (PIN 9) PCB GROUND CONNECTION OPTIONAL ORDER INFORMATION Lead Free Finish TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4365CDDB TRMPBF LTC4365CDDB TRPBF LFKS 8-Lead (3mm 2mm) Plastic DFN 0C to 70C LTC4365CDDB-1 TRMPBF LTC4365CDDB-1 TRPBF LGMB 8-Lead (3mm 2mm) Plastic DFN 0C to 70C LTC4365IDDB TRMPBF LTC4365IDDB TRPBF LFKS 8-Lead (3mm 2mm) Plastic DFN 40C to 85C LTC4365IDDB-1 TRMPBF LTC4365IDDB-1 TRPBF LGMB 8-Lead (3mm 2mm) Plastic DFN 40C to 85C LTC4365HDDB TRMPBF LTC4365HDDB TRPBF LFKS 8-Lead (3mm 2mm) Plastic DFN 40C to 125C LTC4365HDDB-1 TRMPBF LTC4365HDDB-1 TRPBF LGMB 8-Lead (3mm 2mm) Plastic DFN 40C to 125C LTC4365CTS8 TRMPBF LTC4365CTS8 TRPBF LTFKT 8-Lead Plastic TSOT-23 0C to 70C LTC4365CTS8-1 TRMPBF LTC4365CTS8-1 TRPBF LTGKZ 8-Lead Plastic TSOT-23 0C to 70C LTC4365ITS8 TRMPBF LTC4365ITS8 TRPBF LTFKT 8-Lead Plastic TSOT-23 40C to 85C LTC4365ITS8-1 TRMPBF LTC4365ITS8-1 TRPBF LTGKZ 8-Lead Plastic TSOT-23 40C to 85C LTC4365HTS8 TRMPBF LTC4365HTS8 TRPBF LTFKT 8-Lead Plastic TSOT-23 40C to 125C LTC4365HTS8-1 TRMPBF LTC4365HTS8-1 TRPBF LTGKZ 8-Lead Plastic TSOT-23 40C to 125C Rev. B 2 For more information www.analog.com