POWER LOSS (W) LT8364 Low I Boost/SEPIC/ Q Inverting Converter with 4A, 60V Switch FEATURES DESCRIPTION n Wide Input Voltage Range: 2.8V to 60V The LT 8364 is a current mode DC/DC converter with a n Ultralow Quiescent Current and Low Ripple 60V, 4A 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 4A, 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 12-lead 4mm 3mm DFN and zation to an external clock. It can also be used to select 16-lead MSOP packages between burst or pulse-skip modes of operation with or n AEC-Q100 Qualified for Automotive Applications without Spread Spectrum Frequency Modulation for low EMI. For increased efficiency, a BIAS pin can accept a second input to supply the INTV regulator. Additional APPLICATIONS CC features include frequency foldback and programmable n Industrial and Automotive soft-start to control inductor current during startup. n Telecom The LT8364 is available in a thermally enhanced 12-lead n Medical Diagnostic Equipment 4mm 3mm DFN package or a thermally enhanced n Portable Electronics 16-lead MSOP package with four pins removed. All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION 2MHz, 48V Output Boost Converter Efficiency and Power Loss V 100 3.0 OUT 3.3H 48V V IN 90 2.7 300mA AT V = 8V 8V TO 38V IN 640mA AT V = 12V 4.7F IN 80 2.4 EFFICIENCY 1A AT V = 24V 1M IN V SW IN 70 2.1 FBX 4.7F 60 1.8 LT8364 x2 EN/UVLO BIAS 1.5 50 POWER LOSS INTV CC 40 1.2 SYNC/MODE 30 0.9 RT SS GND V C 1F 34.8k 20 0.6 V = 12V IN 20k 36.5k 10 0.3 V = 24V IN 0 2.2nF 0 10nF 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 LOAD CURRENT (A) 8364 TA01a 8364 TA01b Rev. A 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LT8364 ABSOLUTE MAXIMUM RATINGS (Note 1) SW ............................................................................ 60V FBX ........................................................................... 4V V , EN/UVLO ............................................................ 60V Operating Junction Temperature (Note 3) IN BIAS .......................................................................... 40V LT8364E, LT8364I ..............................40C to 125C EN/UVLO Pin Above V Pin, SYNC............................. 6V LT8364H .............................................40C to 150C IN INTV ...............................................................(Note 2) Storage Temperature Range ...................65C to 150C CC V ............................................................................... 4V C PIN CONFIGURATION TOP VIEW TOP VIEW NC 1 12 SW1 1 EN/UVLO 16 SW1 EN/UVLO 2 11 SW2 3 V 14 SW2 IN 17 V 3 10 SYNC/MODE PGND, IN 13 5 INTV 12 SYNC/MODE CC GND GND NC 6 11 SS INTV 4 9 SS CC 7 BIAS 10 RT BIAS 5 8 RT V 8 9 FBX C V 6 7 FBX MSE PACKAGE C VARIATION: MSE16 (12) 16-LEAD PLASTIC MSOP DE PACKAGE = 45C/W, = 10C/W 12-LEAD (4mm 3mm) PLASTIC DFN JA JC EXPOSED PAD (PIN 17) IS PGND AND GND, MUST BE SOLDERED TO PCB = 43C/W, = 5.5C/W JA JC EXPOSED PAD (PIN 13) IS PGND AND GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT8364EMSE PBF LT8364EMSE TRPBF 8364 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8364IMSE PBF LT8364IMSE TRPBF 8364 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8364HMSE PBF LT8364HMSE TRPBF 8364 16-Lead Plastic MSOP with 4 Pins Removed 40C to 150C LT8364EDE PBF LT8364EDE TRPBF 8364 12-Lead (4mm 3mm) Plastic DFN 40C to 125C LT8364IDE PBF LT8364IDE TRPBF 8364 12-Lead (4mm 3mm) Plastic DFN 40C to 125C LT8364HDE PBF LT8364HDE TRPBF 8364 12-Lead (4mm 3mm) Plastic DFN 40C to 150C AUTOMOTIVE PRODUCTS** LT8364EMSE WPBF LT8364EMSE WTRPBF 8364 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8364IMSE WPBF LT8364IMSE WTRPBF 8364 16-Lead Plastic MSOP with 4 Pins Removed 40C to 125C LT8364HMSE WPBF LT8364HMSE WTRPBF 8364 16-Lead Plastic MSOP with 4 Pins Removed 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. A 2 For more information www.analog.com