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LTM8045 Datasheet(PDF) 1 Page - Linear Technology |
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LTM8045 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 32 page  LTM4634 1 4634f For more information www.linear.com/LTM4634 Typical applicaTion FeaTures DescripTion Triple Output 5A/5A/4A Step-Down DC/DC µModule® Regulator The LTM®4634 integrates three complete 5A/5A/4A high efficiencyswitchingmodeDC/DCconvertersintoonesmall package.Switchingcontrollers,powerFETs,inductors,and mostsupportcomponentsareincluded.Operatingoveran input voltage range of 4.75V to 28V, the LTM4634 provides three independent output voltages. VOUT1 and VOUT2 are adjustable from 0.8V to 5.5V, while VOUT3 is adjustable from 0.8V to 13.5V. Each output voltage is set by a single external resistor. 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, multiphase parallel opera- tion, soft-start and output voltage tracking for supply rail sequencing. Fault protection features include overvoltage protection, overcurrent protection and temperature monitoring. The power module is offered in a space saving, thermally enhanced 15mm × 15mm × 5.01mm BGA package. The LTM4634 is available with SnPb (BGA) or RoHS compliant terminal finish. 24V Input to 3.3V, 5V and 12V Output Regulator 24V Input Efficiency applicaTions n Three Independent High Efficiency Regulator Channels n IOUT1,2 = 5A, IOUT3 = 4A n Input Voltage Range: 4.75V to 28V n Independent VIN for Each Channel n VOUT1,2 Voltage Range: 0.8V to 5.5V n VOUT3 Voltage Range: 0.8V to 13.5V n ±1.5% Maximum Total DC Output Error n Current Mode Control/Fast Transient Response n Frequency Synchronization n Output Overvoltage and Overcurrent Protection n PolyPhase® Operation with Current Sharing n General Purpose Temperature Monitors n Soft-Start/Voltage Tracking n Power Good Monitors n SnPb or RoHS Compliant Finish n 15mm × 15mm × 5.01mm BGA Package n Telecom, Networking and Industrial Equipment n High Density Point of Load Voltage Regulation L , LT, LTC, LTM, µModule, PolyPhase, Burst Mode, Linear Technology and the Linear logo are registered trademarks and PowerPath, LTpowerCAD and UltraFast are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6580258 and 8163643. Other patents pending. 19.1k 3.3V 11.5k 5V 4.32k 12V 10k 40k 2 1µF 10k 4.7µF 6.3V CNTL_PWR RUN1 RUN2 RUN3 TK/SS1 TK/SS2 TK/SS3 PGOOD12 PGOOD3 VOUT1 VFB1 VOUT2 VFB2 VOUT3 VFB3 4634 TA01a GND MODE/PLLIN SGND VIN1 24VIN VIN2 VIN3 LTM4634 INTVCC EXTVCC 5V FREQ/PLLLPF LOAD CURRENT (A) 0 80 85 90 4.5 4.0 4634 TA01b 75 70 60 1.0 2.0 3.0 0.5 5.0 1.5 2.5 3.5 65 100 95 24V to 3.3V EFF (750kHz) CH1 24V to 5V EFF (750kHz) CH2 24V to 12V EFF (750kHz) CH3 VEXTVCC = 5V |
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Similar Description - LTM8045 |
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