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LTM4622 Dataheets PDF



Part Number LTM4622
Manufacturers Linear Technology
Logo Linear Technology
Description Dual Ultrathin 2.5A Step-Down DC/DC uModule Regulator
Datasheet LTM4622 DatasheetLTM4622 Datasheet (PDF)

LTM4622 Dual Ultrathin 2.5A or Single 5A Step-Down DC/DC µModule Regulator FEATURES nn Complete Solution in <1cm2 nn Wide Input Voltage Range: 3.6V to 20V nn 3.3V Input Compatible with VIN Tied to INTVCC nn 0.6V to 5.5V Output Voltage nn Dual 2.5A (3A Peak) or Single 5A Output Current nn ±1.5% Maximum Total Output Voltage Regulation Error Over Load, Line and Temperature nn Current Mode Control, Fast Transient Response nn External Frequency Synchronization nn Multiphase Parallelable with Current.

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LTM4622 Dual Ultrathin 2.5A or Single 5A Step-Down DC/DC µModule Regulator FEATURES nn Complete Solution in <1cm2 nn Wide Input Voltage Range: 3.6V to 20V nn 3.3V Input Compatible with VIN Tied to INTVCC nn 0.6V to 5.5V Output Voltage nn Dual 2.5A (3A Peak) or Single 5A Output Current nn ±1.5% Maximum Total Output Voltage Regulation Error Over Load, Line and Temperature nn Current Mode Control, Fast Transient Response nn External Frequency Synchronization nn Multiphase Parallelable with Current Sharing nn Output Voltage Tracking and Soft-Start Capability nn Selectable Burst Mode® Operation nn Overvoltage Input and Overtemperature Protection nn Power Good Indicators nn 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA Packages APPLICATIONS nn General Purpose Point-of-Load Conversion nn Telecom, Networking and Industrial Equipment nn Medical Diagnostic Equipment nn Test and Debug Systems DESCRIPTION The LTM®4622 is a complete dual 2.5A step-down switching 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 package 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 continuous, 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 compliant terminal finish. All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION 1.5V and 1V Dual Output DC/DC Step-Down µModule Regulator VIN 3.6V TO 20V 4.7µF 25V PGOOD1 VIN1 PGOOD2 VOUT1 VIN2 RUN1 RUN2 LTM4622 VOUT2 INTVCC SYNC/MODE COMP1 COMP2 TRACK/SS1 FB1 TRACK/SS2 FB2 FREQ GND 4622 TA01a VOUT1 1V, 2.5A 47µF VOUT2 47µF 1.5V, 2.5A 90.9k 40.2k Document Feedback For more information www.analog.com EFFICIENCY (%) 1.5V Output Efficiency vs Load Current 95 90 85 80 75 70 65 VIN = 5V 60 VIN = 12V 0 0.5 1.0 1.5 2.0 2.5 3 LOAD CURRENT (A) 4622 TA01b Rev. G 1 LTM4622 ABSOLUTE MAXIMUM RATINGS (Note 1) VIN1, VIN2.................................................... –0.3V to 22V VOUT.............................................................. –0.3V to 6V PGOOD1, PGOOD2...................................... –0.3V to 18V RUN1, RUN2..................................... –0.3V to VIN + 0.3V INTVCC, TRACK/SS1, TRACK/SS2............. –0.3V to 3.6V SYNC/MODE, COMP1, COMP2, FB1, FB2............................


DLLFSD01LP3-7 LTM4622 LXES15AAA1-133


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