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LTM4622 Datasheet(PDF) 1 Page - Linear Technology |
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LTM4622 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 28 page  LTM4622 1 Rev F For more information www.analog.com All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION FEATURES DESCRIPTION Dual Ultrathin 2.5A or Single 5A Step-Down DC/DC µModule Regulator The LTM®4622 is a complete dual 2.5A step-down switch- ing mode µModule® (powermodule) regulator in a tiny ultrathin 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA packages. Included in the pack- age are the switching controller, power FETs, inductor and support components. Operating over an input voltage range of 3.6V to 20V, the LTM4622 supports an output voltage range of 0.6V to 5.5V, set by a single external resistor. Its high efficiency design delivers dual 2.5A con- tinuous, 3A peak, output current. Only a few ceramic input and output capacitors are needed. The LTM4622 supports selectable Burst Mode operation and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable 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 LTM4622 is available with SnPb (BGA) or RoHS com- pliant terminal finish. 1.5V and 1V Dual Output DC/DC Step-Down µModule Regulator 1.5V Output Efficiency vs Load Current APPLICATIONS n Complete Solution in <1cm2 n Wide Input Voltage Range: 3.6V to 20V n 3.3V Input Compatible with VIN Tied to INTVCC n 0.6V to 5.5V Output Voltage n Dual 2.5A (3A Peak) or Single 5A 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 LOAD CURRENT (A) 0 80 85 90 3 4622 TA01b 75 70 60 65 0.5 1.0 1.5 2.0 2.5 95 VIN = 5V VIN = 12V 90.9k 4622 TA01a 4.7µF 25V VIN 3.6V TO 20V VOUT1 1V, 2.5A 47µF VOUT1 VOUT2 1.5V, 2.5A 47µF VOUT2 FB1 COMP1 COMP2 GND LTM4622 PGOOD1 PGOOD2 VIN RUN1 RUN2 INTVCC SYNC/MODE TRACK/SS1 TRACK/SS2 FREQ 40.2k FB2 Document Feedback |
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