Datasheet LTM4643 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Ultrathin Quad μModule Regulator with Configurable 3A Output Array |
| Pages / Page | 32 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. Configurable Output Array*. TYPICAL … |
| Revision | D |
| File Format / Size | PDF / 2.3 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. APPLICATIONS. Configurable Output Array*. TYPICAL APPLICATION. 4V to 20V Input, Quad 0.9V, 1V, 1.2V and
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LTM4643 Ultrathin Quad µModule Regulator with Configurable 3A Output Array
FEATURES DESCRIPTION
n Quad Output Step-Down µModule® Regulator with The LTM®4643 is a quad DC/DC step-down µModule 3A per Output (power module) regulator with 3A per output. Outputs can n Wide Input Voltage Range: 4V to 20V be paralleled in an array for up to 12A capability. Included n 2.375V to 20V with External Bias in the package are the switching controllers, power FETs, n 0.6V to 3.3V Output Voltage inductors and support components. Operating over an n 3A DC Output Current Each Channel input voltage range of 4V to 20V or 2.375V to 20V with n ±1.5% Total Output Voltage Regulation an external bias supply, the LTM4643 supports an output n Current Mode Control, Fast Transient Response voltage range of 0.6V to 3.3V each set by a single external n Parallelable for Higher Output Current resistor. Its high efficiency design delivers 3A continuous n Output Voltage Tracking output current per channel. Only bulk input and output n Internal Temperature Sensing Diode Output capacitors are needed. n External Frequency Synchronization Fault protection features include overvoltage, overcurrent n Overvoltage, Current and Temperature Protection and overtemperature protection. The LTM4643 is offered n 9mm × 15mm × 1.82mm LGA and 9mm × 15mm × in a 9mm ×15mm × 1.82mm LGA and 9mm × 15mm × 2.42mm BGA Packages 2.42mm BGA packages with SnPb (BGA) or RoHS compli- ant terminal finish.
APPLICATIONS Configurable Output Array*
n FPGAs, GPUs and ASICs Applications 3A n PCIe and Backside PCB Mounting 3A 6A 9A All registered trademarks and trademarks are the property of their respective owners. 3A 3A 12A 3A 3A 3A * Note 4
TYPICAL APPLICATION 4V to 20V Input, Quad 0.9V, 1V, 1.2V and 1.5V Output DC/DC µModule Regulator 1.5V Output Efficiency and Power Loss (Each Channel)
CLKIN CLKOUT 4V to 20V VIN1 VOUT1 1.5V/3A 95 1.6 22µF SVIN1 FB1 47µF ×2 90 1.4 RUN1 40.2k 4V 25V PGOOD1 LTM4643 85 1.2 POWER LOSS (W) VIN2 VOUT2 1.2V/3A SVIN2 FB2 47µF 80 1.0 RUN2 PGOOD2 60.4k 4V 75 0.8 VIN3 VOUT3 1V/3A EFFICIENCY (%) 70 0.6 SVIN3 FB3 47µF RUN3 PGOOD3 90.9k 4V 65 0.4 60 VIN = 5V 0.2 VIN4 VOUT4 0.9V/3A VIN = 12V SVIN4 FB4 47µF 55 0.0 RUN4 PGOOD4 121k 4V 0 0.5 1 1.5 2 2.5 3 LOAD CURRENT (A) TEMP SGND GND 4643 TA01b 4643 TA01a NOT ALL PINS ARE SHOWN Rev D Document Feedback For more information www.analog.com 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Related Parts
FEATURES DESCRIPTION
n Quad Output Step-Down µModule® Regulator with The LTM®4643 is a quad DC/DC step-down µModule 3A per Output (power module) regulator with 3A per output. Outputs can n Wide Input Voltage Range: 4V to 20V be paralleled in an array for up to 12A capability. Included n 2.375V to 20V with External Bias in the package are the switching controllers, power FETs, n 0.6V to 3.3V Output Voltage inductors and support components. Operating over an n 3A DC Output Current Each Channel input voltage range of 4V to 20V or 2.375V to 20V with n ±1.5% Total Output Voltage Regulation an external bias supply, the LTM4643 supports an output n Current Mode Control, Fast Transient Response voltage range of 0.6V to 3.3V each set by a single external n Parallelable for Higher Output Current resistor. Its high efficiency design delivers 3A continuous n Output Voltage Tracking output current per channel. Only bulk input and output n Internal Temperature Sensing Diode Output capacitors are needed. n External Frequency Synchronization Fault protection features include overvoltage, overcurrent n Overvoltage, Current and Temperature Protection and overtemperature protection. The LTM4643 is offered n 9mm × 15mm × 1.82mm LGA and 9mm × 15mm × in a 9mm ×15mm × 1.82mm LGA and 9mm × 15mm × 2.42mm BGA Packages 2.42mm BGA packages with SnPb (BGA) or RoHS compli- ant terminal finish.
APPLICATIONS Configurable Output Array*
n FPGAs, GPUs and ASICs Applications 3A n PCIe and Backside PCB Mounting 3A 6A 9A All registered trademarks and trademarks are the property of their respective owners. 3A 3A 12A 3A 3A 3A * Note 4
TYPICAL APPLICATION 4V to 20V Input, Quad 0.9V, 1V, 1.2V and 1.5V Output DC/DC µModule Regulator 1.5V Output Efficiency and Power Loss (Each Channel)
CLKIN CLKOUT 4V to 20V VIN1 VOUT1 1.5V/3A 95 1.6 22µF SVIN1 FB1 47µF ×2 90 1.4 RUN1 40.2k 4V 25V PGOOD1 LTM4643 85 1.2 POWER LOSS (W) VIN2 VOUT2 1.2V/3A SVIN2 FB2 47µF 80 1.0 RUN2 PGOOD2 60.4k 4V 75 0.8 VIN3 VOUT3 1V/3A EFFICIENCY (%) 70 0.6 SVIN3 FB3 47µF RUN3 PGOOD3 90.9k 4V 65 0.4 60 VIN = 5V 0.2 VIN4 VOUT4 0.9V/3A VIN = 12V SVIN4 FB4 47µF 55 0.0 RUN4 PGOOD4 121k 4V 0 0.5 1 1.5 2 2.5 3 LOAD CURRENT (A) TEMP SGND GND 4643 TA01b 4643 TA01a NOT ALL PINS ARE SHOWN Rev D Document Feedback For more information www.analog.com 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Related Parts
