LTC4216 Ultralow Voltage Hot Swap Controller Fea T Descrip T n Allows Safe Board Insertion and Removal from The LTC 4216 is a positive low voltage Hot Swap controller a Live Backplane that allows a board to be safely inserted and removed from n Controls Load Voltages from 0V to 6V a live backplane. It controls load voltages ranging from n Fast Response Limits Peak Fault Current 0V to 6V and isolates a severe fault with instantaneous n Adjustable Analog Current Limit analog current limiting. n Adjustable Soft-Start with Inrush Current Limiting An internal high side switch driver controls the gate of n Adjustable Response Time for Overcurrent an external N-channel MOSFET. An adjustable soft-start Protection limits the rate of change of the inrush current at start-up n Low Circuit Breaker Trip Threshold: 25mV for a large load capacitor. Together with an analog current n No External Gate Capacitor Required limit amplifier, an electronic circuit breaker with adjustable n Internal Charge Pump for N-Channel MOSFET response time provides dual level overcurrent protection. n Adjustable Output Power-Up Rate No external gate capacitor is required for the analog cur- n RESET and FAULT Output rent limit loop compensation. n 10-Lead MSOP and 12-Lead (4mm 3mm) DFN The FB pin monitors the output supply voltage and signals Packages the RESET output pin. An ON pin provides on/off control and a FAULT pin indicates the fault status. The LTC4216 a T is available in the 10-lead MSOP and 12-lead (4mm n Electronic Circuit Breaker 3mm) DFN packages. n Live Board Insertion and Removal L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the n Industrial High Side Switch/Circuit Breaker property of their respective owners. n Optical Networking Typical a T Single Channel 1.8V Hot Swap Controller Normal Power-Up with Soft-Start BACKPLANE PCB EDGE CONNECTOR CONNECTOR V GATE (FEMALE) (MALE) 5V/DIV V 0.004 Si4864DY OUT LONG V IN 1.8V 1.8V + 5A 1000F 17.4k I 1% OUT 22 3.3V 2.5A/DIV SENSEP SENSEN GATE V LONG CC V FB CC 3.3V 10k 10k 10k P 330nF 1% LTC4216 LOGIC V OUT SHORT 1V/DIV ON FAULT FAULT 15k RESET RESET 20k TIMER SS FILTER GND 1% 1% 4216 TA01b 0.5ms/DIV 10nF 10nF 18nF LONG 4216 TA01 GND 4216fa 1 For more information www.linear.com/LTC4216 ion pplica ions pplica ion uresLTC4216 a Te Maxi Mu M r a T (Note 1) Bias Supply Voltage (V ) ............................ 0.3V to 9V Operating Temperature Range CC Input Voltages LTC4216C ................................................ 0C to 70C FB, ON, SS, SENSEP, SENSEN ................. 0.3V to 9V LTC4216I .............................................40C to 85C TIMER, FILTER .............................0.3V to V + 0.3V Storage Temperature Range CC Output Voltages MS .....................................................65C to 150C RESET, FAULT .......................................... 0.3V to 9V DE ......................................................65C to 150C GATE ...................................................... 0.3V to 15V Lead Temperature (Soldering, 10sec) MS Package ......................................................300C p c F T TOP VIEW RESET 1 12 FAULT TOP VIEW ON 2 11 V CC RESET 1 10 V CC ON 2 9 SENSEP FILTER 3 10 SENSEP 13 FILTER 3 8 SENSEN TIMER 4 9 SENSEN TIMER 4 7 GATE GND 5 6 FB SS 5 8 GATE MS PACKAGE GND 6 7 FB 10-LEAD PLASTIC MSOP T = 125C, = 160C/W JMAX JA DE PACKAGE 12-LEAD (4mm 3mm) PLASTIC DFN T = 125C, = 43C/W, = 4.3C/W JMAX JA JC EXPOSED PAD (PIN 13) INTERNALLY CONNECTED TO GND (PCB CONNECTION OPTIONAL) o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4216CDE PBF LTC4216CDE TRPBF 4216 12-Lead (4mm 3mm) Plastic DFN 0C to 70C LTC4216IDE PBF LTC4216IDE TRPBF 4216 12-Lead (4mm 3mm) Plastic DFN 40C to 85C LTC4216CMS PBF LTC4216CMS TRPBF LTBKV 10-Lead Plastic MSOP 0C to 70C LTC4216IMS PBF LTC4216IMS TRPBF LTBKV 10-Lead Plastic MSOP 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: