Linear Technology Corp. Hot Product: LTC3124 July 8, 2014 Tony Armstrong Director of Product Marketing, Power Products

Why the Need for the LTC3124? Powerful Monolithic Boost Converter—Dual Phase 2.5A Switch Delivers 5A of Switch Current with Low Input and Output Ripple Many Applications Need to a Boosted Output at 12V with Over 1A of Output Current. Common Example 5VIN to 12VOUT at 1.5A Synchronous Rectification Maximizes Efficiency and Minimizes Thermal Concerns These Large Monolithic Boost Converters Must be Capable of Operating from Wide Range of Input Sources—SuperCaps, Dual Alkaline, Li-Ion and 5V Fixed Rails: So a 1.8V to 5.5V Start-Up (and down to 500mV after Start-Up)Input Voltage Range is Ideal Inrush Current Limiting and Robust Output Short-Circuit Protection is Need for System Safety/Reliability Adjustable Output Voltage Range of 2.5V to 15V Services a Wide Range of Commercial and Industrial Applications Simple, Compact Footprint

LTC3124: What Is It? 15V, 5A 2-Phase Monolithic Synchronous Boost Converter VIN Range: 1.8V to 5.5V Start-Up, Down to 500mV After Start-Up VOUT Range: 2.5V to 15V 95% Efficiency and 25uA Of Quiescent Current Robust Inrush Current Limiting and Short-Circuit Protection Programmable Switching Frequencies to 3MHz

LTC3124: Key Features VIN Range: 1.8V to 5.5V, Down to 500mV After Start-Up Adjustable Output Voltage: 2.5V to 15V 1.5A Output Current for VIN = 5V and VOUT = 12V Dual-Phase Control Reduces Output Voltage Ripple Output Disconnects from Input When Shut Down Synchronous Rectification: Up to 95% Efficiency Inrush Current Limit Up to 3MHz Programmable Switching Frequency Synchronizable to External Clock Selectable Burst Mode® Operation: 25μA IQ Output Overvoltage Protection Internal Soft-Start <1μA IQ in Shutdown 16-Lead, Thermally Enhanced 3mm × 5mm × 0.75mm DFN and TSSOP Packages

LTC3124: Typical Application Schematic

LTC3124: Efficiency of Typical Application (of Schematic on Previous Slide) VIN=5V, VOUT=12V

LTC3124: Packages

LTC3124: Typical Applications