LTC4357IDCB#TRMPBF Analog Devices

LTC4357 Positive High Voltage Ideal Diode Controller Fserutae Dnoitpircse n Reduces Power Dissipation by Replacing a Power The LTC 4357 is a positive high voltage ideal diode control- Schottky Diode with an N-Channel MOSFET ler that drives an external N-channel MOSFET to replace a n 0.5s Turn-Off Time Limits Peak Fault Current Schottky diode. When used in diode-OR and high current n Wide Operating Voltage Range: 9V to 80V diode applications, the LTC4357 reduces power consump- n Smooth Switchover without Oscillation tion, heat dissipation, voltage loss and PC board area. n No Reverse DC Current The LTC4357 easily ORs power sources to increase total n Available in 6-Lead (2mm 3mm) DFN and system reliability. In diode-OR applications, the LTC4357 8-Lead MSOP Packages controls the forward voltage drop across the MOSFET to ensure smooth current transfer from one path to the other without oscillation. If the power source fails or is shorted, a snoitacilpp a fast turn-off minimizes reverse current transients. n N + 1 Redundant Power Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n High Availability Systems Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n AdvancedTCA Systems n Telecom Infrastructure n Automotive Systems t lacipy a noitacilpp 48V, 10A Diode-OR Power Dissipation vs Load Current 6 FDB3632 V INA 48V 5 DIODE (MBR10100) 4 IN GATE OUT V TO LOAD 3 LTC4357 V OUT POWER DD SAVED GND 2 1 FDB3632 V INB FET (FDB3632) 48V 0 0 2 4 6 8 10 CURRENT (A) IN GATE OUT 4357 TA01b LTC4357 V DD GND 4357 TA01 *SEE FIGURES 2 AND 3 FOR ADDITIONAL OPTIONAL COMPONENTS 4357fd POWER DISSIPATION (W)LTC4357 a etulosbMixa Mu M r sgnita (Notes 1, 2) Supply Voltages Operating Ambient Temperature Range IN ............................................................ 1V to 100V LTC4357C ................................................ 0C to 70C OUT, V .............................................. 0.3V to 100V LTC4357I.............................................. 40C to 85C DD Output Voltage LTC4357H .......................................... 40C to 125C GATE (Note 3) ........................ V 0.2V to V + 10V LTC4357MP ....................................... 55C to 125C IN IN Storage Temperature Range ................... 65C to 150C Lead Temperature (Soldering, 10 sec) MS Package ...................................................... 300C nip c no Fnoitarugi TOP VIEW TOP VIEW OUT 1 6 V DD IN 1 8 OUT 7 IN 2 5 NC NC 2 7 V DD GND NC 3 6 NC GATE 4 GND 3 GATE 4 5 GND MS8 PACKAGE DCB PACKAGE 8-LEAD PLASTIC MSOP 6-LEAD (2mm s 3mm) PLASTIC DFN T = 125C, = 163C/W JMAX JA T = 125C, = 90C/W JMAX JA EXPOSED PAD (PIN 7) PCB GND CONNECTION OPTIONAL ro Dre ni Fro Mnoita LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4357CMS8 PBF LTC4357CMS8 TRPBF LTCXD 8-Lead Plastic MSOP 0C to 70C LTC4357IMS8 PBF LTC4357IMS8 TRPBF LTCXD 8-Lead Plastic MSOP 40C to 85C LTC4357HMS8 PBF LTC4357HMS8 TRPBF LTCXD 8-Lead Plastic MSOP 40C to 125C LTC4357MPMS8 PBF LTC4357MPMS8 TRPBF LTFWZ 8-Lead Plastic MSOP 55C to 125C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4357MPMS8 LTC4357MPMS8 TR LTFWZ 8-Lead Plastic MSOP 55C to 125C LEAD FREE FINISH TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4357CDCB TRMPBF LTC4357CDCB TRPBF LCXF 6-Lead (2mm 3mm) Plastic DFN 0C to 70C LTC4357IDCB TRMPBF LTC4357IDCB TRPBF LCXF 6-Lead (2mm 3mm) Plastic DFN 40C to 85C LTC4357HDCB TRMPBF LTC4357HDCB TRPBF LCXF 6-Lead (2mm 3mm) Plastic DFN 40C to 125C TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on lead based finish parts. For more information on lead free part marking, go to: