LTC4232-1 5A Integrated Hot Swap Controller Fea T Descrip T n Reduced 16ms Turn-On Delay The LTC 4232-1 is an integrated solution for Hot Swap n Small Footprint applications that allows a board to be safely inserted and n 33m MOSFET with R removed from a live backplane. The part integrates a Hot SENSE n Wide Operating Voltage Range: 2.9V to 15V Swap controller, power MOSFET and current sense resis- n Adjustable, 10% Accurate Current Limit tor in a single package for small form factor applications. n Current and Temperature Monitor Outputs The LTC4232-1 provides separate inrush current control n Overtemperature Protection and a 10% accurate 5A current limit with foldback cur- n Adjustable Current Limit Timer Before Fault rent limiting. The current limit threshold can be adjusted n Power Good and Fault Outputs dynamically using an external pin. Additional features n Adjustable Inrush Current Control include a current monitor output that amplifies the sense n 2% Accurate Undervoltage and Overvoltage Protection resistor voltage for ground referenced current sensing n Pin Compatible with LTC4217 (DFN Package Only) and a MOSFET temperature monitor output. Thermal limit, n Available in 16-Lead 5mm 3mm DFN Package overvoltage, undervoltage and power good monitoring are also provided. a T The PCI Express compliant LTC4232-1 allows faster turn-on than the LTC4232 by providing a shorter (16ms) debounce n RAID Systems, Solid State Drives delay and external control of the GATE ramp rate. n Server I/O Cards n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear PCI Express Systems Technology Corporation. Hot Swap and PowerPath are trademarks of Linear Technology n Industrial Corporation. All other trademarks are the property of their respective owners. Typical a T 12V, 5A Card Resident Application with Auto-Retry Power-Up Waveforms V OUT 12V V OUT 12V DD 5A + 150k V * 150F IN CONTACT BOUNCE 107k 10V/DIV UV FB 20k 10k FLT I IN LTC4232DHC-1 5.23k 1A/DIV 3.3nF OV PG V 100k OUT 10k 10V/DIV GATE 4.7nF TIMER I SET PG 0.1F 10V/DIV I INTV ADC CC MON 1F GND 20k 42321 TA01a 42321 TA01b 4ms/DIV *DIODES INC. SMAJ22A 42321fa 1 For more information www.linear.com/LTC4232-1 ion pplica ions pplica ion uresLTC4232-1 a Te Maxi Mu M r a T p in c F T (Notes 1, 2) TOP VIEW Supply Voltage (V ) ................................. 0.3V to 28V DD V 1 16 V DD DD Input Voltages UV 2 15 I SET FB, OV, UV ..............................................0.3V to 12V OV 3 14 I MON TIMER ................................................... 0.3V to 3.5V TIMER 4 13 FB 17 SENSE .............................V 10V or 0.3V to V DD DD SENSE INTV 5 12 FLT CC Output Voltages GND 6 11 PG I , I ................................................. 0.3V to 3V SET MON OUT 7 10 GATE PG, FLT .................................................. 0.3V to 35V OUT 8 9 OUT OUT ............................................ 0.3V to V + 0.3V DD DHC PACKAGE INTV .................................................. 0.3V to 3.5V CC 16-LEAD (5mm 3mm) PLASTIC DFN GATE (Note 3) ........................................ 0.3V to 33V T = 125C, = 43C/W JMAX JA EXPOSED PAD (PIN 17) IS SENSE, Operating Temperature Range = 43C/W SOLDERED, OTHERWISE = 140C/W JA JA LTC4232C-1 ............................................. 0C to 70C LTC4232I-1 ..........................................40C to 85C Junction Temperature (Notes 4, 5) ........................ 125C Storage Temperature Range .................. 65C to 150C o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4232CDHC-1 PBF LTC4232CDHC-1 TRPBF 42321 16-Lead (5mm 3mm) Plastic DFN 0C to 70C LTC4232IDHC-1 PBF LTC4232IDHC-1 TRPBF 42321 16-Lead (5mm 3mm) Plastic DFN 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: