POWER LOSS (mW) LT8336 40V, 2.5A, Low I Synchronous Q Step-Up Silent Switcher with PassThru FEATURES DESCRIPTION n Silent Switcher Architecture The LT 8336 is a low I , synchronous step-up DC/DC Q n Ultralow EMI Emissions converter. It features Silent Switcher architecture and n Optional Spread Spectrum Frequency Modulation optional spread spectrum frequency modulation to min- n Integrated 40V, 2.5A Power Switches imize EMI emissions while delivering high efficiencies at n Wide Input/Output Voltage Range: 2.7V to 40V high switching frequencies. n Low V Pin Quiescent Current: IN The wide input/output voltage range, low V pin quies- IN n 0.3A in Shutdown cent current in Burst Mode operation, and 100% duty n 4A in Burst Mode Operation cycle capability for the synchronous MOSFET in PassThru n 15A in PassThru Operation operation (V V ), make the LT8336 ideally suited IN OUT n 100% Duty Cycle Capability for Synchronous MOSFET for general purpose step-up and automotive preboost n Adjustable and Synchronizable: 300kHz to 3MHz applications. n Pulse-Skipping or Burst Mode Operation at Light Load n The LT8336 integrates 40V, 2.5A power switches, operat- Output Soft-Start and Power Good Monitor n ing at a fixed switching frequency programmable between Internal Compensation n 300kHz and 3MHz and synchronizable to an external clock. Accurate 1V Enable Pin Threshold n Pulse-skipping or Burst Mode operation can be selected, Small 16-Lead (3mm 3mm) LQFN Package n with or without spread-spectrum frequency modulation, AEC-Q100 Qualified for Automotive Applications to optimize efficiency and EMI performance. The LT8336 features output soft-start, an output power APPLICATIONS good flag and output overvoltage lockout. n Automotive and Industrial Power Supplies All registered trademarks and trademarks are the property of their respective owners. Protected n General Purpose Step-Up by U.S patents, including 10686381. TYPICAL APPLICATION High Efficiency 8V to 16V Input, 2MHz, 24V Output Boost Converter Efficiency 6.8H 100 10k V IN 8V TO 16V 90 0.1F 10F 80 V SW BST IN 1k V 70 OUT 24V EN/UVLO V OUT 60 0.6A AT 8V V IN 1.2A AT 16V V IN 50 100 PG LT8336 40 1M 10F 10 SYNC/MODE FB 2 20 V = 16V IN V = 8V IN 10 43.2k INTV RT GND CC Burst Mode OPERATION 0 1 47.5k 0.1 1 10 100 1k 10k 1F 2MHz OUTPUT CURRENT (mA) 8336 TA01b 8336 TA01a Rev. A 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LT8336 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW V , V , EN/UVLO ..................................................40V IN OUT SYNC/MODE, FB .........................................................6V NC NC PG .............................................................................10V 16 15 14 13 Operating Junction Temperature Range (Notes 2, 3) SYNC/MODE 1 12 BST LT8336E ............................................ 40C to 125C RT 2 11 SW LT8336J............................................. 40C to 150C 17 GND GND 3 10 SW LT8336H ............................................ 40C to 150C FB SW 4 9 Storage Temperature Range .................. 65C to 150C Maximum Reflow (Package Body) 5 6 7 8 NC NC Temperature ......................................................260C LQFN PACKAGE 16-LEAD (3mm 3mm) LQFN = 42.8C/W = 45.2C/W JA JCtop = 8.2C/W (Note 4) JCbottom EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION PART MARKING PACKAGE* MSL TEMPERATURE RANGE PART NUMBER DEVICE FINISH CODE PAD FINISH TYPE RATING (SEE NOTE 2) LT8336EV PBF 40C to 125C LQFN (Laminate LT8336JV PBF LHHP e4 Au (RoHS) Package with QFN 3 40C to 150C Footprint) LT8336HV PBF AUTOMOTIVE PRODUCTS** LT8336EV WPBF 40C to 125C LQFN (Laminate LT8336JV WPBF LHHP e4 Au (RoHS) Package with QFN 3 40C to 150C Footprint) LT8336HV WPBF Contact the factory for parts specified with wider operating temperature Recommended LGA and BGA PCB Assembly and Manufacturing ranges. Pad or ball finish code is per IPC/JEDEC J-STD-609. Procedures *The LT8336 package has the same dimensions as a standard 3mm 3mm QFN. LGA and BGA Package and Tray Drawings **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. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25C. V = 5V, EN/UVLO = 2V, unless otherwise noted. A IN PARAMETER CONDITIONS MIN TYP MAX UNITS V Operation Voltage l 2.7 40 V IN V Quiescent Current EN/UVLO = 0.15V 0.3 1 A IN EN/UVLO = 0.15V l 0.3 10 A SYNC/MODE = 0V, Not Switching 4 8 A SYNC/MODE = Open, Not Switching 0.9 1.5 mA V = 10.1V, V = 10V, FB = 1.05V (In PassThru Mode) 15 25 A IN OUT Rev. A 2 For more information www.analog.com GND PG V OUT INTV CC V OUT EN/UVLO V GND IN