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LTM4609EV#PBF

製品説明
仕様・特性

LTM4609 36VIN, 34VOUT High Efficiency Buck-Boost DC/DC µModule Regulator Description Features Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT n Wide V Range: 4.5V to 36V IN n Wide V OUT Range: 0.8V to 34V n I OUT : 4A DC (10A DC in Buck Mode) n Up to 98% Efficiency n Current Mode Control n Power Good Output Signal n Phase-Lockable Fixed Frequency: 200kHz to 400kHz n Ultrafast Transient Response n Current Foldback Protection n Output Overvoltage Protection n Small Surface Mount Footprint, Low Profile (15mm × 15mm × 2.82mm) LGA and (15mm × 15mm × 3.42mm) BGA Packages n SnPb (BGA) or RoHS Compliant (LGA and BGA) Finish The LTM®4609 is a high efficiency switching mode buckboost power supply. Included in the package are the switching controller, power FETs and support components. Operating over an input voltage range of 4.5V to 36V, the LTM4609 supports an output voltage range of 0.8V to 34V, set by a resistor. This high efficiency design delivers up to 4A continuous current in boost mode (10A in buck mode). Only the inductor, sense resistor, bulk input and output capacitors are needed to finish the design. n The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The high switching frequency and current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The LTM4609 can be frequency synchronized with an external clock to reduce undesirable frequency harmonics. Fault protection features include overvoltage and foldback current protection. The DC/DC µModule® regulator is offered in small 15mm × 15mm × 2.82mm LGA and 15mm × 15mm × 3.42mm BGA packages. The LTM4609 is available with SnPb (BGA) or RoHS compliant terminal finish. Applications Telecom, Servers and Networking Equipment Industrial and Automotive Equipment n High Power Battery-Operated Devices n n L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Burst Mode and PolyPhase are registered trademarks and No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical Application Efficiency and Power Loss vs Input Voltage 30V/2A Buck-Boost DC/DC µModule Regulator with 6.5V to 36V Input VIN RUN PLLIN V OUT FCB LTM4609 10µF 50V 5.6µH + 330µF 50V VOUT 30V 2A SW1 SW2 RSENSE SENSE+ 0.1µF SS SGND SENSE– PGND R2 15mΩ ×2 VFB 98 4609 TA01a 5 97 4 96 95 3 94 2 93 92 91 2.74k 6 POWER LOSS (W) ON/OFF 99 CLOCK SYNC 10µF 50V EFFICIENCY (%) VIN 6.5V TO 36V EFFICIENCY POWER LOSS 8 12 16 24 20 VIN (V) 28 32 36 1 0 4609 TA01b 4609ff For more information www.linear.com/LTM4609 1

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