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LTM4645 Datasheet(PDF) 1 Page - Linear Technology |
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LTM4645 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 34 page  LTM4646 1 4646f For more information www.linear.com/LTM4646 TYPICAL APPLICATION FEATURES DESCRIPTION Dual 10A or Single 20A µModule Regulator APPLICATIONS The LTM®4646 is a complete dual 10A output switching mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductors, and all supporting components. Operating from an input voltage range of 4.5V to 20V, the LTM4646 supports two outputs each with an output voltage range of 0.6V to 5.5V, set by external resistors. Its high efficiency design delivers up to 10A continuous current for each output. Only a few input and output capacitors are needed. The device supports frequency synchronization, multiphase operation, high efficiency light load operation and output voltage tracking for supply rail sequencing and has an onboard temperature diode per channel for device tempera- ture monitoring. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. Fault protection features include overvoltage and overcur- rent protection. The power module is offered in a small footprint 11.25mm × 15mm × 5.01mm BGA package. The LTM4646 is available with SnPb or RoHS compliant terminal finish. All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611. n Dual 10A or Single 20A Output n Wide Input Voltage Range: 4.5V to 20V n 2.375VMIN with CPWR Bias n Output Voltage Range: 0.6V to 5.5V n ±1.5% Maximum Total DC Output Error n Multiphase Current Sharing n Differential Remote Sense Amplifier, Each Channel n Current Mode Control/Fast Transient Response n Up to 96% Efficiency n Adjustable Switching Frequency (250kHz to 1.3MHz) n Frequency Synchronization n Overcurrent Foldback Protection n Output Overvoltage Protection n Internal or External Compensation n Built-In Temperature Monitoring Diode n SnPb or RoHS Compliant Finish n 11.25mm × 15mm × 5.01mm BGA Package n Point-of-Load Power Supplies n Telecom and Networking Equipment n Industrial Equipment n Medical Equipment Click to view associated TechClip Videos. Efficiency, 12V to 0.9V, 1.2V at 10A Each RUN1 RUN2 VOUT1 VOUTS1 VIN1 VIN2 CPWR DRVCC INTVCC VFB1 VRNG VOUTS1– COMP1A COMP1B TRACK/SS1 VOUT2 VOUTS2 VFB2 VOUTS2– COMP2A COMP2B TRACK/SS2 MODE_PLLIN LTM4646 4646 TA01a 100µF ×4 115k VOUT2 1.2V AT 10A 60.4k 30.1k 0.1µF PINS NOT USED IN THIS CIRCUIT: PGOOD1, PGOOD2, EXTVCC, TEMP1+, TEMP1–, TEMP2+, TEMP2– PHASMD, CLKOUT, SW1, SW2 0.1µF 4.7µF SGND FREQ GND 121k 100F ×4 10F ×4 VIN 4.5V TO 20V VOUT1 0.9V AT 10A 130k OUTPUT CURRENT (A) 1 2 3 4 5 6 7 8 9 10 70 75 80 85 90 95 4646 TA01b 12VIN TO 1.2V EFF, 500kHz 12VIN TO 0.9V EFF, 400kHz |
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