LTC4361HDC-2#TRMPBF Analog Devices

LTC4361-1/LTC4361-2 Overvoltage/Overcurrent Protection Controller FEATURES DESCRIPTION n 2.5V to 5.5V Operation The LTC 4361 overvoltage/overcurrent protection con- n Overvoltage Protection Up to 80V troller safeguards 2.5V to 5.5V systems from input sup- n No Input Capacitor or TVS Required for Most ply overvoltage. It is designed for portable devices with Applications multiple power supply options including wall adaptors, n 2% Accurate 5.8V Overvoltage Threshold car battery adaptors and USB ports. n 10% Accurate 50mV Overcurrent Circuit Breaker The LTC4361 controls an external N-channel MOSFET n <1s Overvoltage Turn-Off, Gentle Shutdown in series with the input power supply. During overvolt- n Controls N-Channel MOSFET age transients, the LTC4361 turns off the MOSFET within n Adjustable Power-Up dV/dt Limits Inrush Current 1s, isolating downstream components from the input n Reverse Voltage Protection supply. Inductive cable transients are absorbed by the n Power Good Output MOSFET and load capacitance. In most applications, the n Low Current Shutdown LTC4361 provides protection from transients up to 80V n Latchoff (LTC4361-1) or Auto-Retry (LTC4361-2) without requiring transient voltage suppressors or other After Overcurrent external components. n Available in 8-Lead ThinSOT and 8-Lead The LTC4361 has a delayed start-up and adjustable dV/ (2mm 2mm) DFN Packages dt ramp-up for inrush current limiting. A PWRGD pin provides power good monitoring for V . The LTC4361 IN APPLICATIONS features a soft shutdown controlled by the ON pin and n USB Protection drives an optional external P-channel MOSFET for nega- n Handheld Computers tive voltage protection. Following an overvoltage condi- n Cell/Smart Phones tion, the LTC4361 automatically restarts with a start-up n MP3/MP4 Players delay. After an overcurrent fault, the LTC4361-1 remains n Digital Cameras off while the LTC4361-2 automatically restarts after a 130ms start-up delay. All registered trademarks and trademarks are the property of their respective owners. Output Protected from Overvoltage at Input TYPICAL APPLICATION Protection from Overvoltage and Overcurrent V IN 0.025 V Si1470DH OUT V IN 5V 5V 1.5A C OUT V OUT GATE V , V IN OUT SENSE OUT 5V/DIV IN LTC4361 V GATE 10V/DIV ON PWRGD GND 436112 TA01a 436112 TA01b 0.5s/DIV Si1470DH C = 10F OUT Rev C 1 Document Feedback For more information www.analog.comLTC4361-1/LTC4361-2 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Bias Supply Voltage (IN) ............................ 0.3V to 85V Operating Temperature Range Input Voltages LTC4361C ................................................ 0C to 70C SENSE ................................................... 0.3V to 85V LTC4361I .............................................40C to 85C OUT, ON ................................................... 0.3V to 9V LTC4361H .......................................... 40C to 125C Output Voltages Storage Temperature Range .................. 65C to 150C PWRGD .................................................... 0.3V to 9V Lead Temperature (Soldering, 10 sec) GATE (Note 3) ........................................ 0.3V to 15V TSOT .................................................................300C GATEP .................................................... 0.3V to 85V IN to GATEP ........................................... 0.3V to 10V PIN CONFIGURATION TOP VIEW TOP VIEW 8 GND 1 IN ON 1 8 PWRGD GATEP 2 7 SENSE OUT 2 7 GATE 9 OUT 3 6 GATE GATEP 3 6 SENSE ON 4 5 PWRGD GND 4 5 IN DC PACKAGE TS8 PACKAGE 8-LEAD (2mm 2mm) PLASTIC DFN 8-LEAD PLASTIC TSOT-23 T = 125C, = 102C/W JMAX JA T = 125C, = 195C/W EXPOSED PAD (PIN 9) IS GND, CONNECTION OPTIONAL JMAX JA ORDER INFORMATION Lead Free Finish TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4361CTS8-1 TRMPBF LTC4361CTS8-1 TRPBF LTDWN 8-Lead Plastic TSOT-23 0C to 70C LTC4361CTS8-2 TRMPBF LTC4361CTS8-2 TRPBF LTFMN 8-Lead Plastic TSOT-23 0C to 70C LTC4361ITS8-1 TRMPBF LTC4361ITS8-1 TRPBF LTDWN 8-Lead Plastic TSOT-23 40C to 85C LTC4361ITS8-2 TRMPBF LTC4361ITS8-2 TRPBF LTFMN 8-Lead Plastic TSOT-23 40C to 85C LTC4361HTS8-1 TRMPBF LTC4361HTS8-1 TRPBF LTDWN 8-Lead Plastic TSOT-23 40C to 125C LTC4361HTS8-2 TRMPBF LTC4361HTS8-2 TRPBF LTFMN 8-Lead Plastic TSOT-23 40C to 125C LTC4361CDC-1 TRMPBF LTC4361CDC-1 TRPBF LDWP 8-Lead (2mm 2mm) Plastic DFN 0C to 70C LTC4361CDC-2 TRMPBF LTC4361CDC-2 TRPBF LFMP 8-Lead (2mm 2mm) Plastic DFN 0C to 70C LTC4361IDC-1 TRMPBF LTC4361IDC-1 TRPBF LDWP 8-Lead (2mm 2mm) Plastic DFN 40C to 85C LTC4361IDC-2 TRMPBF LTC4361IDC-2 TRPBF LFMP 8-Lead (2mm 2mm) Plastic DFN 40C to 85C LTC4361HDC-1 TRMPBF LTC4361HDC-1 TRPBF LDWP 8-Lead (2mm 2mm) Plastic DFN 40C to 125C LTC4361HDC-2 TRMPBF LTC4361HDC-2 TRPBF LFMP 8-Lead (2mm 2mm) Plastic DFN 40C to 125C TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Consult ADI Marketing for parts specified with wider operating temperature ranges. Consult ADI Marketing for information on lead based finish parts. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev C 2 For more information www.analog.com