LTC4415 Dual 4A Ideal Diodes with Adjustable Current Limit Fea T Descrip T n Dual 50m Monolithic Ideal Diodes The LTC 4415 contains two monolithic PowerPath ideal n 1.7V to 5.5V Operating Range diodes, each capable of supplying up to 4A with typical n Up to 4A Adjustable Current Limit for Each Diode forward conduction resistance of 50m. The diode voltage n Low Reverse Leakage Current (1A Max) drops are regulated to 15mV during forward conduction at n 15mV Forward Drop in Regulation low currents, extending the power supply operating range n Smooth Switchover in Diode ORing and ensuring no oscillations during supply switchover. n Load Current Monitor Less than 1A of reverse current flows from OUT to IN n Precision Enable Thresholds to Set Switchover making this device well suited for power supply ORing n Soft-Start to Limit Inrush Current on Start-Up applications. n Status Pins to Indicate Forward Diode Conduction The two ideal diodes are independently enabled and n Current and Thermal Limit with Warning prioritized using inputs EN1 and EN2. The output current n Thermally Enhanced 16-Lead MSOP and DFN limits can be adjusted independently from 0.5A to 4A (3mm 5mm) Packages using resistors on the CLIM pins. Furthermore, the ideal diode currents can be monitored via CLIM pin voltages. a T Open-drain status pins indicate when the ideal diodes are forward conducting. When the die temperature approaches n High Current PowerPath Switch thermal shutdown, or if the output load exceeds the cur- n Battery and Wall Adapter Diode ORing rent limit threshold, the corresponding warning pins are n Backup Battery Diode ORing pulled low. n Logic Controlled High Current Power Switch L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Supercapacitor ORing PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the n property of their respective owners. Multiple Battery Sharing Typical a T Forward Characteristics of LTC4415 vs MBRS410E Schottky Prioritized Power Supply ORing CURRENT LIMIT IDEAL 4 PRIMARY IN1 OUT1 TO POWER LOAD SOURCE LTC4415 4.7F 100k LTC4415 3 EN1 SCHOTTKY CLIM1 STAT1 DIODE 21.5k MBRS410E CLIM2 WARN1 2 124 124 WARN2 STAT2 R = 50m ON EN2 1 IDEAL OUT2 IN2 SECONDARY + 4415 TA01a POWER GND SOURCE 0 0 100 200 300 400 500 FORWARD VOLTAGE DROP (mV) 4415 TA01b 4415fa 1 LOAD CURRENT (A) ion pplica ions pplica ion uresLTC4415 a Te Maxi Mu M r a T (Note 1) IN1, IN2, OUT1, OUT2, CLIM1, CLIM2, Storage Temperature Range .................. 65C to 150C STAT1, STAT2, WARN1, WARN2 Voltage ....... 0.3V to 6V Peak Reflow Temperature .....................................260C EN1, EN2 Voltage ................. 0.3V to Max (V , V ) INx OUTx Operating Junction Temperature Range (Notes 3, 4) .............................................40C to 125C p in c F T TOP VIEW IN1* 1 16 OUT1* TOP VIEW IN1* 2 15 OUT1* IN1* 1 16 OUT1* EN1 3 14 STAT1 IN1* 2 15 OUT1* EN1 3 14 STAT1 CLIM1 4 13 WARN1 17 17 CLIM1 4 13 WARN1 GND CLIM2 5 12 WARN2 CLIM2 5 GND 12 WARN2 EN2 6 11 STAT2 EN2 6 11 STAT2 IN2* 7 10 OUT2* IN2* 8 9 OUT2* IN2* 7 10 OUT2* MSE PACKAGE IN2* 8 9 OUT2* 16-LEAD PLASTIC MSOP T = 125C, = 35C/W TO 40C/W JMAX JA DHC PACKAGE EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB VARIATION A *ADJACENT PINS ON THE FOUR CORNERS ARE FUSED TOGETHER INTERNALLY. 16-LEAD (5mm 3mm) PLASTIC DFN T = 125C, = 43C/W JMAX JA EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB *ADJACENT PINS ON THE FOUR CORNERS ARE FUSED TOGETHER o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4415EDHC PBF LTC4415EDHC TRPBF 4415 40C to 125C 16-Lead (5mm 3mm) Plastic DFN LTC4415IDHC PBF LTC4415IDHC TRPBF 4415 16-Lead (5mm 3mm) Plastic DFN 40C to 125C LTC4415EMSE PBF LTC4415EMSE TRPBF 4415 16-Lead Plastic MSOP 40C to 125C LTC4415IMSE PBF LTC4415IMSE TRPBF 4415 16-Lead Plastic MSOP 40C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: