Datasheet LTM4638 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | 20VIN, 15A Step-Down DC/DC µModule Regulator |
| 页数 / 页 | 30 / 1 — FEATURES. DESCRIPTION. Complete Solution in <1cm2 (Single-Sided PCB) … |
| 修订版 | B |
| 文件格式/大小 | PDF / 2.3 Mb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Complete Solution in <1cm2 (Single-Sided PCB) or. 0.5cm2 (Dual-Sided PCB)
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LTM4638 20VIN, 15A Step-Down DC/DC µModule Regulator
FEATURES DESCRIPTION
n
Complete Solution in <1cm2 (Single-Sided PCB) or
The LTM®4638 is a complete 15A step-down switch-
0.5cm2 (Dual-Sided PCB)
ing mode µModule (power module) regulator in a tiny n
6.25mm × 6.25mm × 5.02mm BGA Package
6.25mm × 6.25mm × 5.02mm BGA package. Included n Wide Input Voltage Range: 3.1V to 20V in the package are the switching controller, power FETs, n 0.6V to 5.5V Output Voltage inductor and support components. Operating over an n 15A DC Output Current input voltage range of 3.1V to 20V, the LTM4638 sup- n ±1.5% Maximum Total DC Output Voltage Error ports an output voltage range of 0.6V to 5.5V, set by a Over Line, Load and Temperature single external resistor. Its high efficiency design delivers n Differential Remote Sensing Amp up to 15A continuous output current. Only bulk input and n Current Mode Control, Fast Transient Response output capacitors are needed. The LTM4638 product video n External Frequency Synchronization is available on the website. n Multiphase Parallel Current Sharing with The LTM4638 supports selectable discontinuous mode Multiple LTM4638s operation and output voltage tracking for supply rail se- n Output Voltage Tracking quencing. Its high switching frequency and current mode n Selectable Discontinuous Mode control enable a very fast transient response to line and n Power Good Indicator load changes without sacrificing stability. n Overvoltage, Overcurrent and Overtemperature Protection Fault protection features include overvoltage, overcurrent and overtemperature protection.
APPLICATIONS
The LTM4638 is available with SnPb or RoHS compliant n terminal finish. Telecom, Datacom, Networking and Industrial Equipment All registered trademarks and trademarks are the property of their respective owners. n Medical Diagnostic Equipment
Click to view associated Video Design Idea.
n Data Storage Rack Units and Cards n Test and Debug Systems
TYPICAL APPLICATION 1.0V Output Efficiency vs Load Current 15A, 1.0V Output DC/DC µModule
®
Step-Down Regulator
95 90 PHMODE CLKOUT V VOUT IN 3.1V TO 20V V V 1.0V 85 22µF IN OUT + 100µF 15A 25V RUN VOSNS 6.3V LTM4638 INTVCC PGOOD x2 80 MODE/CLKIN COMPa EFFICIENCY (%) TRACK/SS COMPb 0.1µF 75 FREQ FB VIN = 5V, 600kHz – VIN = 12V, 600kHz GND VOSNS 90.9k 70 4638 TA01a 0 3 6 9 12 15 LOAD CURRENT (A) 4638 TA01b Rev. B Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Related Parts
FEATURES DESCRIPTION
n
Complete Solution in <1cm2 (Single-Sided PCB) or
The LTM®4638 is a complete 15A step-down switch-
0.5cm2 (Dual-Sided PCB)
ing mode µModule (power module) regulator in a tiny n
6.25mm × 6.25mm × 5.02mm BGA Package
6.25mm × 6.25mm × 5.02mm BGA package. Included n Wide Input Voltage Range: 3.1V to 20V in the package are the switching controller, power FETs, n 0.6V to 5.5V Output Voltage inductor and support components. Operating over an n 15A DC Output Current input voltage range of 3.1V to 20V, the LTM4638 sup- n ±1.5% Maximum Total DC Output Voltage Error ports an output voltage range of 0.6V to 5.5V, set by a Over Line, Load and Temperature single external resistor. Its high efficiency design delivers n Differential Remote Sensing Amp up to 15A continuous output current. Only bulk input and n Current Mode Control, Fast Transient Response output capacitors are needed. The LTM4638 product video n External Frequency Synchronization is available on the website. n Multiphase Parallel Current Sharing with The LTM4638 supports selectable discontinuous mode Multiple LTM4638s operation and output voltage tracking for supply rail se- n Output Voltage Tracking quencing. Its high switching frequency and current mode n Selectable Discontinuous Mode control enable a very fast transient response to line and n Power Good Indicator load changes without sacrificing stability. n Overvoltage, Overcurrent and Overtemperature Protection Fault protection features include overvoltage, overcurrent and overtemperature protection.
APPLICATIONS
The LTM4638 is available with SnPb or RoHS compliant n terminal finish. Telecom, Datacom, Networking and Industrial Equipment All registered trademarks and trademarks are the property of their respective owners. n Medical Diagnostic Equipment
Click to view associated Video Design Idea.
n Data Storage Rack Units and Cards n Test and Debug Systems
TYPICAL APPLICATION 1.0V Output Efficiency vs Load Current 15A, 1.0V Output DC/DC µModule
®
Step-Down Regulator
95 90 PHMODE CLKOUT V VOUT IN 3.1V TO 20V V V 1.0V 85 22µF IN OUT + 100µF 15A 25V RUN VOSNS 6.3V LTM4638 INTVCC PGOOD x2 80 MODE/CLKIN COMPa EFFICIENCY (%) TRACK/SS COMPb 0.1µF 75 FREQ FB VIN = 5V, 600kHz – VIN = 12V, 600kHz GND VOSNS 90.9k 70 4638 TA01a 0 3 6 9 12 15 LOAD CURRENT (A) 4638 TA01b Rev. B Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Related Parts