LTC4231

LTC4230 : www.DataSheet4U.com FEATURES s s LTC4230 Triple Hot Swap Controller with Multifunction Current Control DESCRIPTIO The LTC®4230 is a 3-channel Hot SwapTM controller that allows a board to be safely inserted and removed from a live backplane. Internal high side switch drivers control the gates of external N-channel MOSFETs for supply voltages ranging from 1.7V to 16.5V. The LTC4230 provides soft-start and inrush current limiting during the programmable start-up period. On-chip current limit comparators provide dual level circuit breaker protection. The slow comparators trip at VCCn – 50mV and activate in 10µs or are programmed by an external filter capacitor. The fast comparators trip at VCC.

LTC4231 : nn Enables Safe Board Insertion and Removal from a Power Supply nn 4µA Supply Current nn 0.3µA Shutdown Current nn Wide Operating Voltage Range: 2.7V to 36V nn Reverse Supply Protection to –40V nn Adjustable Analog Current Limit with Circuit Breaker nn Automatic Retry or Latchoff on Current Fault nn Overvoltage and Undervoltage Monitoring nn Controls Single or Back-to-Back N-Channel MOSFETs nn 12-Lead MSOP and 3mm × 3mm QFN Packages nn AEC-Q100 Qualified for Automotive Applications APPLICATIONS nn Battery Powered Equipment nn Solar Powered Systems nn Portable Instruments nn Automotive Battery Protection nn Energy Harvesting The LTC®4231 is a micropower Hot Swap controller that allows safe .

LTC4232 : The LTC®4232 is an integrated solution for Hot Swap applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications. The LTC4232 provides separate inrush current control and a 10% accurate 5A current limit with foldback current limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output. Thermal limit, overvoltage, undervoltage and .

LTC4233 : The LTC®4233 is an integrated solution for Hot Swap™ applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications. The MOSFET Safe Operating Area is production tested and guaranteed for the stresses in Hot Swap applications. The LTC4233 provides separate inrush current control and an 11% accurate 11.2A current limit with output dependent foldback. The current limit threshold can be adjusted dynamically using the ISET pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground r.

LTC4234 : The LTC®4234 is an integrated solution for Hot Swap™ applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications. The MOSFET Safe Operating Area is production tested and guaranteed for the stresses in Hot Swap applications. The LTC4234 provides separate inrush current control and an 11% accurate 22.5A current limit with output dependent foldback. The current limit threshold can be adjusted dynamically using the ISET pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground r.

LTC4235 : nn Ideal Diode-OR and Inrush Current Control for Redundant Supplies nn Low Loss Replacement for Power Schottky Diodes nn Enables Safe Board Insertion into a Live Backplane nn 9V to 14V Operation nn Current Monitor Output nn Controls N-Channel MOSFETs nn Limits Peak Fault Current in ≤ 1µs nn Adjustable Current Limit with Foldback nn Adjustable Current Limit Fault Delay nn 0.5µs Ideal Diode Turn-On and Turn-Off Time nn Smooth Switchover without Oscillation nn Fault and Power Good Outputs nn LTC4235-1: Latch Off After Fault nn LTC4235-2: Automatic Retry After Fault nn 20-Pin 4mm x 5mm QFN Package Applications nn Redundant Power Supplies nn High Availability Systems and Servers nn Telecom and N.

LTC4236 : The LTC®4236 offers ideal diode-OR and Hot Swap functions for two power rails by controlling external N-channel MOSFETs. MOSFETs acting as ideal diodes replace two high power Schottky diodes and the associated heat sinks, saving power and board area. A Hot Swap control MOSFET allows a board to be safely inserted and removed from a live backplane by limiting inrush current. The supply output is also protected against short-circuit faults with a fast acting foldback current limit and electronic circuit breaker. The LTC4236 regulates the forward voltage drop across the ideal diode MOSFETs to ensure smooth current transfer from one supply to the other without oscillation. The ideal diode MOSFETs.

LTC4238 : The LTC®4238 is a high voltage high current Hot Swap controller that allows a board to be safely inserted and removed from a live backplane. Dual 12V gate drive is well suited for high power applications to either share safe operating area across parallel MOSFETs or support a 2-stage start-up that first charges the load capacitance followed by enabling a low on-resistance path to the load. The device features active current limiting (ACL) with two foldback options as VDS increases. The constant power profile limits the power dissipation to be no higher than a fixed value, while the high power profile allows the part to ride through large input steps during operation. The LTC4238 notifies whe.