POWER LOSS (W) LT8362 Low I Boost/SEPIC/Inverting Q Converter with 2A, 60V Switch FEATURES DESCRIPTION n Wide Input Voltage Range: 2.8V to 60V The LT 8362 is a current mode DC/DC converter with a n Ultralow Quiescent Current and Low Ripple 60V, 2A switch operating from a 2.8V to 60V input. With BurstMode Operation: I = 9A a unique single feedback pin architecture it is capable Q n 2A, 60V Power Switch of boost, SEPIC or inverting configurations. Burst Mode n Positive or Negative Output Voltage Programming operation consumes as low as 9A quiescent current to with a Single Feedback Pin maintain high efficiency at very low output currents, while n Programmable Frequency (300kHz to 2MHz) keeping typical output ripple below 15mV. n Synchronizable to an External Clock An external compensation pin allows optimization of loop n Spread Spectrum Frequency Modulation for Low EMI bandwidth over a wide range of input and output volt- n BIAS Pin for Higher Efficiency ages and programmable switching frequencies between n Programmable Undervoltage Lockout (UVLO) 300kHz and 2MHz. A SYNC/MODE pin allows synchroni- n Thermally Enhanced 10-Lead 3mm 3mm DFN and zation to an external clock. It can also be used to select 16-Lead MSOP packages between burst or pulse-skipping modes of operation with n AEC-Q100 Qualified for Automotive Applications or without Spread Spectrum Frequency Modulation for low EMI. For increased efficiency, a BIAS pin can accept APPLICATIONS a second input to supply the INTV regulator. Additional CC features include frequency foldback and programmable n Industrial and Automotive soft-start to control inductor current during start-up. n Telecom n Medical Diagnostic Equipment The LT8362 is available in a thermally enhanced 10-lead n Portable Electronics 3mm 3mm DFN package or a thermally enhanced All registered trademarks and trademarks are the property of their respective owners. 16-lead MSOP package with four pins removed. TYPICAL APPLICATION 2MHz, 48V Output Boost Converter Efficiency and Power Loss 100 2.0 V OUT 6.8H 48V V IN 90 1.8 200mA AT V = 8V 8V TO 38V IN 80 1.6 320mA AT V = 12V 4.7F IN EFFICIENCY 700mA AT V = 24V IN 1M V SW 70 1.4 IN 4.7pF FBX 60 1.2 4.7F LT8362 EN/UVLO BIAS 50 1.0 0.8 40 INTV CC SYNC/MODE POWER LOSS 30 0.6 RT SS GND V C 1F 34.8k 20 0.4 V = 12V IN 10 V = 24V 0.2 20k IN 57.6k 0 0 10nF 150pF 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 LOAD CURRENT (A) 8362 TA01a 8362 TA01b Rev. B 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LT8362 ABSOLUTE MAXIMUM RATINGS (Note 1) SW ......................................................................... 60V FBX ........................................................................ 4V V , EN/UVLO ......................................................... 60V Operating Junction Temperature (Note 3) IN BIAS ....................................................................... 40V LT8362E, LT8362I ............................40C to 125C EN/UVLO Pin Above V Pin, SYNC.......................... 6V LT8362H ..........................................40C to 150C IN INTV .............................................................(Note 2) Storage Temperature Range ................65C to 150C CC V ............................................................................ 4V C PIN CONFIGURATION TOP VIEW TOP VIEW EN/UVLO 1 16 SW1 EN/UVLO 1 10 SW V 3 14 SW2 IN 17 V 2 9 SYNC/MODE IN 11 PGND, INTV 5 12 SYNC/MODE PGND, INTV 3 8 SS CC CC GND 6 NC 11 SS GND BIAS 4 7 RT BIAS 7 10 RT 8 V 9 FBX V 5 6 FBX C C MSE PACKAGE VARIATION: MSE16 (12) DD PACKAGE 16-LEAD PLASTIC MSOP 10-LEAD (3mm 3mm) PLASTIC DFN = 45C/W, = 10C/W = 43C/W JA JC JA EXPOSED PAD (PIN 17) IS PGND AND GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 11) IS PGND AND GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT8362EMSE PBF LT8362EMSE TRPBF 8362 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8362IMSE PBF LT8362IMSE TRPBF 8362 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8362HMSE PBF LT8362HMSE TRPBF 8362 16-Lead Plastic MSOP with 4 Pins Removed 40C to 150C LT8362EDD PBF LT8362EDD TRPBF LGWZ 10-Lead (3mm 3mm) Plastic DFN 40C to 125C LT8362IDD PBF LT8362IDD TRPBF LGWZ 10-Lead (3mm 3mm) Plastic DFN 40C to 125C LT8362HDD PBF LT8362HDD TRPBF LGWZ 10-Lead (3mm 3mm) Plastic DFN 40C to 150C AUTOMOTIVE PRODUCTS** LT8362EMSE WPBF LT8362EMSE WTRPBF 8362 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8362IMSE WPBF LT8362IMSE WTRPBF 8362 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8362HMSE WPBF LT8362HMSE WTRPBF 8362 16-Lead Plastic MSOP with 4 Pins Removed 40C to 150C LT8362EDD WPBF LT8362EDD WTRPBF LGWZ 10-Lead (3mm 3mm) Plastic DFN 40C to 125C LT8362IDD WPBF LT8362IDD WTRPBF LGWZ 10-Lead (3mm 3mm) Plastic DFN 40C to 125C LT8362HDD WPBF LT8362HDD WTRPBF LGWZ 10-Lead (3mm 3mm) Plastic DFN 40C to 150C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. **Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for thesemodels. Rev. B 2 For more information www.analog.com