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LTC3115-1 Datasheet(PDF) 1 Page - Linear Technology |
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LTC3115-1 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 42 page  LTC3115-1 1 31151fb For more information www.linear.com/LTC3115-1 Typical applicaTion FeaTures DescripTion 40V, 2A Synchronous Buck-Boost DC/DC Converter The LTC®3115-1 is a high voltage monolithic synchronous buck-boostDC/DCconverter.Itswide2.7Vto40Vinputand output voltage ranges make it well suited to a wide variety of automotive and industrial applications. A proprietary low noise switching algorithm optimizes efficiency with input voltages that are above, below or even equal to the output voltage and ensures seamless transitions between operational modes. Programmable frequency PWM mode operation provides low noise, high efficiency operation and the ability to syn- chronizeswitchingtoanexternalclock.Switchingfrequen- ciesupto2MHzaresupportedtoallowuseofsmallvaluein- ductorsforminiaturizationoftheapplicationcircuit. Pinse- lectableBurstModeoperationreducesstandbycurrentand improves light load efficiency which, combined with a 3µA shutdown current, make the LTC3115-1 ideally suited for battery-powered applications. Additional features include output disconnect in shutdown, short-circuit protection and internal soft-start. The LTC3115-1 is available in ther- mally enhanced 16-lead 4mm × 5mm × 0.75mm DFN and 20-lead TSSOP packages. Efficiency vs VIN applicaTions n Wide VIN Range: 2.7V to 40V n Wide VOUT Range: 2.7V to 40V n 1A Output Current for VIN ≥ 3.6V, VOUT = 5V n 2A Output Current in Step-Down Operation for VIN ≥ 6V n Programmable Frequency: 100kHz to 2MHz n Synchronizable Up to 2MHz with an External Clock n Up to 95% Efficiency n 30µA No-Load Quiescent Current in Burst Mode® Operation n Ultralow Noise Buck-Boost PWM n Internal Soft-Start n 3µA Supply Current in Shutdown n Programmable Input Undervoltage Lockout n Small 4mm × 5mm × 0.75mm DFN Package n Thermally Enhanced 20-Lead TSSOP Package n 24V/28V Industrial Applications n Automotive Power Systems n Telecom, Servers and Networking Equipment n FireWire Regulator n Multiple Power Source Supplies L , LT, LTC, LTM, Burst Mode, LTspice, Linear Technology and the Linear logo are registered trademarks and No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6404251, 6166527 and others pending. BST1 BST2 PVIN VIN VC PVOUT PWM/SYNC FB RUN PVCC VCC RT SW1 SW2 GND PGND LTC3115-1 10µH 0.1µF BURST PWM 2.7V TO 40V 0.1µF 33pF (OPTIONAL) 5V 1A VIN > 3.6V 2A VIN ≥ 6V 4.7µF 47µF 1M 249k 4.7µF 3115 TA01a 47.5k 15k 60.4k 3300pF OFF ON INPUT VOLTAGE (V) 95 90 85 31151 TA01b 70 80 75 40 2 10 ILOAD = 0.5A ILOAD = 1A VOUT = 5V |
Similar Part No. - LTC3115-1_15 |
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Similar Description - LTC3115-1_15 |
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