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LTM4622A Datasheet(PDF) 1 Page - Linear Technology |
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LTM4622A Datasheet(HTML) 1 Page - Linear Technology |
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1 / 30 page  LTM4622A 1 Rev B For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION Dual Ultrathin 2A or Single 4A Step-Down DC/DC µModule Regulator TheLTM®4622Aisacompletedual2Astep-downswitching modeµModule®(micromodule)regulatorinatinyultrathin 6.25mm×6.25mm×1.82mmLGAand 2.42mmBGApack- ages. Included in the package are the switching controller, power FETs, inductor and support components. Operating over an input voltage range of 3.6V to 20V, the LTM4622A supports an output voltage range of 1.5V to 12V, set by a single external resistor. Its high efficiency design delivers dual 2A continuous, 3A peak, output current. Only a few ceramic input and output capacitors are needed. The LTM4622A supports selectable Burst Mode operation and output voltage tracking for supply rail sequencing. Its highswitchingfrequencyandcurrentmodecontrolenable a very fast transient response to line and load changes without sacrificing stability. Fault protection features include input overvoltage, output overcurrent and overtemperature protection. The LTM4622A is available with SnPb (BGA) or RoHS compliant terminal finish. Product Selection Guide PART NUMBER VIN RANGE VOUT RANGE IOUT LTM4622 3.6V to 20V 0.6V to 5.5V Dual 2.5A or Single 5A LTM4622A 1.5V to 12V Dual 2A or Single 4A 3.3V and 5V Dual Output DC/DC Step-Down µModule Regulator 12V Input, 3.3V and 5V Output, Efficiency vs Load Current APPLICATIONS n Complete Solution in <1cm2 n Wide Input Voltage Range: 3.6V to 20V n 1.5V to 12V Output Voltage n Dual 2A (3A Peak) or Single 4A Output Current n ±1.5% Maximum Total Output Voltage Regulation Error Over Load, Line and Temperature n Current Mode Control, Fast Transient Response n External Frequency Synchronization n Multiphase Parallelable with Current Sharing n Output Voltage Tracking and Soft-Start Capability n Selectable Burst Mode® Operation n Overvoltage Input and Overtemperature Protection n Power Good Indicators n 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA Packages n General Purpose Point-of-Load Conversion n Telecom, Networking and Industrial Equipment n Medical Diagnostic Equipment n Test and Debug Systems All registered trademarks and trademarks are the property of their respective owners. LOAD CURRENT (A) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 70 75 80 85 90 95 100 4622A TA01b VOUT = 5V VOUT = 3.3V 13.3k 4622A TA01a 4.7µF 25V VIN 8V TO 20V VOUT1 3.3V, 2A 47µF VOUT1 VOUT2 5V, 2A 47µF VOUT2 FB1 COMP1 COMP2 GND LTM4622A PGOOD1 PGOOD2 VIN2 VIN1 RUN1 RUN2 INTVCC SYNC/MODE TRACK/SS1 TRACK/SS2 FREQ 8.25k FB2 |
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