LTC4358 5A Ideal Diode FEATURES DESCRIPTION n Replaces a Power Schottky Diode The LTC 4358 is a 5A ideal diode that uses an internal n Internal 20m N-Channel MOSFET 20m N-channel MOSFET to replace a Schottky diode n 0.5s Turn-Off Time Limits Peak Fault Current when used in diode-OR and high current diode applica- n Operating Voltage Range: 9V to 26.5V tions. The LTC4358 reduces power consumption, heat n Smooth Switchover without Oscillation dissipation, and PC board area. n No Reverse DC Current The LTC4358 easily ORs power supplies together to in- n Available in 14-Pin (4mm 3mm) DFN and crease total system reliability. In diode-OR applications, 16-Lead TSSOP Packages the LTC4358 regulates the forward voltage drop across the internal MOSFET to ensure smooth current transfer from one path to the other without oscillation. If the power APPLICATIONS source fails or is shorted, a fast turnoff minimizes reverse n N+1 Redundant Power Supplies current transients. n High Availability Systems L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. n Telecom Infrastructure All other trademarks are the property of their respective owners. n Automotive Systems TYPICAL APPLICATION 12V, 5A Diode-OR Power Dissipation vs Load Current 3.0 IN DRAIN 2.5 V = 12V INA DIODE (B530C) OUT 2.0 LTC4358 V DD 1.5 V TO OUT GND POWER SAVED 5A LOAD 1.0 0.5 IN DRAIN FET (LTC4358) V = 12V INB 0 0 24 6 8 OUT CURRENT (A) 4358 TA01b LTC4358 V DD GND 4358 TA01 4358fa 1 POWER DISSIPATION (W)LTC4358 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Supply Voltages Storage Temperature Range ................... 65C to 150C IN, OUT, V , DRAIN Voltage ................. 0.3V to 28V Lead Temperature (Soldering, 10 sec) DD Output Voltage FE Package .......................................................300C GATE (Note 3) .......................... V 0.2V to V + 6V IN IN Operating Ambient Temperature Range LTC4358C ................................................ 0C to 70C LTC4358I.............................................. 40C to 85C PIN CONFIGURATION TOP VIEW TOP VIEW IN 1 16 IN IN 1 14 IN IN 2 15 IN IN 2 13 IN IN 3 14 IN IN 3 12 IN IN 4 13 IN 15 17 IN 4 11 IN DRAIN DRAIN NC 5 12 IN GATE 5 10 NC GATE 6 11 NC NC 6 9 OUT NC 7 10 OUT GND 7 8 V DD GND 8 9 V DD DE PACKAGE 14-LEAD (4mm s 3mm) PLASTIC DFN FE PACKAGE 16-LEAD PLASTIC TSSOP T = 125C, = 4C/W, = 43C/W JMAX JC JA T = 125C, = 10C/W, = 38C/W JMAX JC JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4358CDE PBF LTC4358CDE TRPBF 4358 14-Lead (4mm 3mm) Plastic DFN 0C to 70C LTC4358IDE PBF LTC4358IDE TRPBF 4358 14-Lead (4mm 3mm) Plastic DFN 40C to 85C LTC4358CFE PBF LTC4358CFE TRPBF 4358FE 16-Lead Plastic TSSOP 0C to 70C LTC4358IFE PBF LTC4358IFE TRPBF 4358FE 16-Lead Plastic TSSOP 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *Temperature grades are identi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based nish parts. For more information on lead free part marking, go to: