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LTM4650-1 Datasheet(PDF) 1 Page - Linear Technology |
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LTM4650-1 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 34 page  LTM4647 1 4647fb For more information www.linear.com/LTM4647 TYPICAL APPLICATION FEATURES DESCRIPTION 30A DC/DC Step-Down µModule Regulator The LTM®4647 is a complete 30A output switching mode step-down DC/DC µModule® (power module) regulator. Includedinthepackagearetheswitchingcontroller,power FETs, inductor and all supporting components. Operating over an input voltage range of 4.7V to 15V, the LTM4647 supports an output voltage range of 0.6V to 1.8V, set by a single external resistor. Only a few input and output capacitors are needed. Itshighefficiencydesigndelivers87%efficiencyfrom12V input to 1.0V output with 30A continuous load current. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, programmable multiphase operation, N+1 phase redundancy, and output voltage tracking for supply rail sequencing. Fault protection features include overvoltage and overcur- rent protection. The power module is offered in a space saving 9mm × 15mm × 5.01mm BGA package. The LTM4647 is available with SnPb (BGA) or RoHS compli- ant terminal finish. 12VIN, 1VOUT, 30A DC/DC µModule Regulator APPLICATIONS n 4.7V to 15V Input Voltage Range n 0.6V to 1.8V Output Voltage Range n 30A DC Output Current n ±1.2%TotalDCOutputVoltageError(–40°Cto125°C) n HighReliabilityN+1PhaseRedundancySupported n InternalorExternalControlLoopCompensation n Differential Remote Sense Amplifier for Precision Regulation n Current Mode Control/Fast Transient Response n Multiphase Current Sharing Up to 180A n Built-In Temperature Monitoring n Selectable Pulse-Skipping, Burst Mode® Operation n Soft-Start/Voltage Tracking n Frequency Synchronization n Output Overvoltage Protection n Output Overcurrent Foldback Protection n 9mm × 15mm × 5.01mm BGA Package n Telecom, Networking and Industrial Equipment n Point-of-Load Regulation L , LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, µModule, LTpowerCAD and PolyPhase are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. 1VOUT Efficiency vs Load Current LOAD CURRENT (A) *5V INPUT SEE FIGURE 24 0 80 4647 TA01b 70 10 20 5 15 25 90 100 75 65 85 95 30 5V INPUT* 12V INPUT HIZB VIN SVIN FREQ COMPa COMPb TRACK/SS PINS NOT USED IN THIS CIRCUIT: CLKOUT, MODE/PLLIN, PGOOD, PHASMD, PWM, RUN, SW, TEMP+, TEMP– VOUT VOSNS+ VFB VOSNS– 22µF 25V ×2 2.2 4.7µF 6.3V 1µF 0.1µF VIN 6V TO 15V 43.2k DRVCC INTVCC LTM4647 SGND GND 90.9k 4647 TA01a 100µF 6.3V ×6 47pF VOUT 1V 30A |
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