LTC4365 Overvoltage, Undervoltage, and Reverse Supply Protection Controller

Linear Technology’s protection controllers for battery, handhelds, tablets, and portable instrumentation

Image of Linear Technology's LTC4365 Protection ControllerLTC’s LTC4365 is an overvoltage, undervoltage, and reverse supply protection controller. This controller protects applications where power supply input voltages may be too high, too low, or even negative. It does this by controlling the gate voltages of a pair of external N-channel MOSFETs to ensure that the output stays within a safe operating range. The controller can withstand voltages between -40 V and 60 V and has an operating range of 2.5 V to 34 V, while consuming only 125 μA in normal operation.

Two comparator inputs allow configuration of the overvoltage and undervoltage set points using an external resistive divider. A shutdown pin provides external control for enabling and disabling the MOSFETs as well as placing the device in a low current shutdown state. A fault output provides status of the gate pin pulling low. A fault is indicated when the part is in shutdown or the input voltage is outside the undervoltage and overvoltage set points. This converter comes in TSOT and DFN packages with a temperature range up to -40°C to +125°C. The LTC4365 is perfect for battery, handhelds, tablets, and portable instrumentation applications.

Features
  • Overvoltage/undervoltage protection
  • Overvoltage protection to 60 V
  • Reverse supply protection to -40 V
  • Blocks 50 Hz and 60 Hz AC power
  • Fast (1 ms) recovery from fault
  • No input capacitor or TVS required for most
  • Voltage supply: 2.5 V to 34 V
  • Current supply: 125 µA
  • Temperature operating range: up to -40°C to +125°C
  • Package/case: TSOT, DFN
Applications
   
  • Batteries
  • Handhelds
  • Tablets/notebooks/laptops
 
  • Portable instruments
  • Automotive surge applications
  • Test and measurement instruments

LTC4365 Protection Controller Eval Boards

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
DC1555B datasheet linkDEMO BOARD FOR LTC4365DC1555BDEMO BOARD FOR LTC43654 - Immediate
74 - Factory Stock
DC1555B product page link
DC1555C-B datasheet linkBOARD EVAL LTC4365CTS8-1DC1555C-BBOARD EVAL LTC4365CTS8-13 - Immediate
238 - Factory Stock
DC1555C-B product page link

LTC4365 Protection Controller ICs

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
LTC4365CTS8#TRMPBF datasheet linkIC OVERVOLTAGE PROT TSOT23-8LTC4365CTS8#TRMPBFIC OVERVOLTAGE PROT TSOT23-87739 - Immediate
LTC4365CTS8#TRMPBF product page link
LTC4365ITS8-1#TRMPBF datasheet linkIC OVERVOLTAGE PROT TSOT23-8LTC4365ITS8-1#TRMPBFIC OVERVOLTAGE PROT TSOT23-87051 - Immediate
LTC4365ITS8-1#TRMPBF product page link
LTC4365IDDB-1#TRMPBF datasheet linkIC OVERVOLTAGE PROTECT 8-DFNLTC4365IDDB-1#TRMPBFIC OVERVOLTAGE PROTECT 8-DFN1785 - Immediate
LTC4365IDDB-1#TRMPBF product page link
LTC4365IDDB#TRMPBF datasheet linkIC OVERVOLTAGE PROTECT 8-DFNLTC4365IDDB#TRMPBFIC OVERVOLTAGE PROTECT 8-DFN1120 - Immediate
LTC4365IDDB#TRMPBF product page link
LTC4365HDDB#TRMPBF datasheet linkIC OVERVOLTAGE PROTECT 8-DFNLTC4365HDDB#TRMPBFIC OVERVOLTAGE PROTECT 8-DFN2983 - Immediate
LTC4365HDDB#TRMPBF product page link
LTC4365HDDB-1#TRMPBF datasheet linkIC OVERVOLTAGE PROTECT 8-DFNLTC4365HDDB-1#TRMPBFIC OVERVOLTAGE PROTECT 8-DFN765 - Immediate
LTC4365HDDB-1#TRMPBF product page link
LTC4365CDDB-1#TRMPBF datasheet linkIC OVERVOLTAGE PROTECT 8-DFNLTC4365CDDB-1#TRMPBFIC OVERVOLTAGE PROTECT 8-DFN930 - Immediate
LTC4365CDDB-1#TRMPBF product page link
LTC4365CDDB#TRMPBF datasheet linkIC OVERVOLTAGE PROTECT 8-DFNLTC4365CDDB#TRMPBFIC OVERVOLTAGE PROTECT 8-DFN443 - Immediate
LTC4365CDDB#TRMPBF product page link
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Published: 2017-12-28