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LTM4661 Scheda tecnica(PDF) 1 Page - Linear Technology |
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LTM4661 Scheda tecnica(HTML) 1 Page - Linear Technology |
1 / 20 page LTM4661 1 4661f For more information www.linear.com/LTM4661 TYPICAL APPLICATION FEATURES DESCRIPTION 15V, 4A Step-Up µModule Regulator The LTM®4661 is a synchronous step-up switching mode µModule®(powermodule)regulatorina6.25mm×6.25mm × 2.42mm BGA package. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage of 1.8V to 5.5V, down to 0.7V after start-up, the LTM4661 regulates an output voltage of 2.5V to 15V set by an external resistor. It provides up to 4A switch current. Only bulk input and output capacitors are needed. The LTM4661 1MHz switching frequency and dual phase singleoutputarchitectureenablefasttransientresponseto line and load changes and a significant reduction of output ripple voltage. It supports frequency synchronization, PolyPhase®operationandselectableBurstModeoperation. The LTM4661 features a true output disconnect during shutdown and inrush current limit at start-up. It also has short-circuit,overvoltageandovertemperatureprotection. The LTM4661 is Pb-free and RoHS compliant. 5V/2A DC/DC Step-Up µModule Regulator Efficiency vs Output Current at 3.3V Input APPLICATIONS n Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB) n Input Voltage Range: 1.8V to 5.5V, Down to 0.7V After Start-Up n Output Voltage Range: 2.5V to 15V n 4A Switch Current n Dual Phase Operation n ±3% Maximum Total DC Output Voltage Regulation Over Load, Line and Temperature n Output Disconnect in Shut Down n Inrush Current Limit n External Frequency Synchronization n Selectable Burst Mode® Operation n Output Overvoltage and Overtemperature Protection n 6.25mm × 6.25mm × 2.42mm BGA package n RF Microwave Power Amplifiers n Battery Powered DC Motors n 3.3V Bus Telecom Transceivers All registered trademarks and trademarks are the property of their respective owners. 22µF ×2 16V 22µF ×2 6.3V 2.2µF R1 31.6k 4661 TA01a LTM4661 VOUT FB VOUT 5V/2A VIN SDB MODE/SYNC INTVCC FREQ COMP GND VIN 3.3V LOAD CURRENT (A) 0 100 75 95 85 90 80 70 1 1.8 0.6 1.4 4661 TA01b 2 0.8 1.6 0.4 1.2 0.2 VOUT = 5V |
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