Datasheet LTM4648 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Low VIN, 10A Step-Down μModule Regulator |
| Páginas / Página | 28 / 1 — FEATURES. DESCRIPTION. 10A DC Output Current. Input Voltage Range: 2.375V … |
| Revisión | A |
| Formato / tamaño de archivo | PDF / 1.7 Mb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. 10A DC Output Current. Input Voltage Range: 2.375V to 5.5V. Output Voltage Range: 0.6V to 5V
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LTM4648 Low VIN, 10A Step-Down µModule Regulator
FEATURES DESCRIPTION
n
10A DC Output Current
The LTM®4648 is a 10A low VIN step-down n
Input Voltage Range: 2.375V to 5.5V
DC/DC µModule® (micromodule) regulator. Included in n
Output Voltage Range: 0.6V to 5V
the package are the switching controller, power FETs, n
No Heat Sink or Current Derating Up to 85°C
inductor and all support components. Operating over
Ambient Temperature
an input voltage range of 2.375V to 5.5V, the LTM4648 n
±1.5% Maximum Total DC Output Error
supports an output voltage range of 0.6V to 5V, set by a n
Multiphase Operation with Current Sharing
single external resistor. This high efficiency design delivers n
Remote Sense Amplifier
up to 10A continuous current. Only bulk input and output n Built-In Temperature Monitor capacitors are needed. n Selectable Pulse-Skipping Mode/Burst Mode® High switching frequency and a current mode architecture Operation for High Efficiency at Light Load enable a very fast transient response to line and load n Soft-Start/Voltage Tracking changes without sacrificing stability. The device supports n Protection: Output Overvoltage and Overcurrent frequency synchronization, programmable multiphase Foldback operation and output voltage tracking for supply rail n See LTM4649 for Up to 16VIN Operation sequencing. n 9mm × 15mm × 4.92mm BGA Package Fault protection features include overvoltage protec-
APPLICATIONS
tion, overcurrent protection and thermal shutdown. The n LTM4648 is offered in a small 9mm × 15mm × 4.92mm Telecom, Networking and Industrial Equipment n BGA package available with SnPb or RoHS compliant ter- Point of Load Regulation minal finish. For up to 16VIN operation, see the LTM4649. All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 and 6580258. Other patents pending.
TYPICAL APPLICATION 2.375V to 5.5V Input, 1.5V Output DC/DC Efficiency and Power Loss Current Derating, 5V to 1.5VOUT µModule Regulator at 5V and 3.3V Input with No Heat Sink
100 2.8 12 V V IN OUT VIN VOUT 2.375V TO 5.5V 1.5V 100µF 22µF DIFFP 10A 95 2.4 6.3V 10V 10 ×2 DIFFN ×2 PINS NOT USED 90 2.0 POWER LOSS (W) IN THIS CIRCUIT: LTM4648 8 INTVCC MODE V 85 1.6 OUT_LCL SW 6 RUN DIFFOUT PHMODE 80 1.2 TRACK/SS VFB TEMP EFFICIENCY (%) LOAD CURRENT (A) 4 COMP GND 0.1µF 6.65k 75 0.8 PGOOD CLKIN 2 400LFM 4648 TA01a 70 0.4 CLKOUT VIN = 3.3V 200LFM VIN = 5V 0LFM 65 0 0 0 2 4 6 8 10 0 20 40 60 80 100 120 LOAD CURRENT (A) AMBIENT TEMPERATURE (°C) 4648 TA01b 4648 TA01c Rev A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Design Resources Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Design Resources Related Parts
FEATURES DESCRIPTION
n
10A DC Output Current
The LTM®4648 is a 10A low VIN step-down n
Input Voltage Range: 2.375V to 5.5V
DC/DC µModule® (micromodule) regulator. Included in n
Output Voltage Range: 0.6V to 5V
the package are the switching controller, power FETs, n
No Heat Sink or Current Derating Up to 85°C
inductor and all support components. Operating over
Ambient Temperature
an input voltage range of 2.375V to 5.5V, the LTM4648 n
±1.5% Maximum Total DC Output Error
supports an output voltage range of 0.6V to 5V, set by a n
Multiphase Operation with Current Sharing
single external resistor. This high efficiency design delivers n
Remote Sense Amplifier
up to 10A continuous current. Only bulk input and output n Built-In Temperature Monitor capacitors are needed. n Selectable Pulse-Skipping Mode/Burst Mode® High switching frequency and a current mode architecture Operation for High Efficiency at Light Load enable a very fast transient response to line and load n Soft-Start/Voltage Tracking changes without sacrificing stability. The device supports n Protection: Output Overvoltage and Overcurrent frequency synchronization, programmable multiphase Foldback operation and output voltage tracking for supply rail n See LTM4649 for Up to 16VIN Operation sequencing. n 9mm × 15mm × 4.92mm BGA Package Fault protection features include overvoltage protec-
APPLICATIONS
tion, overcurrent protection and thermal shutdown. The n LTM4648 is offered in a small 9mm × 15mm × 4.92mm Telecom, Networking and Industrial Equipment n BGA package available with SnPb or RoHS compliant ter- Point of Load Regulation minal finish. For up to 16VIN operation, see the LTM4649. All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 and 6580258. Other patents pending.
TYPICAL APPLICATION 2.375V to 5.5V Input, 1.5V Output DC/DC Efficiency and Power Loss Current Derating, 5V to 1.5VOUT µModule Regulator at 5V and 3.3V Input with No Heat Sink
100 2.8 12 V V IN OUT VIN VOUT 2.375V TO 5.5V 1.5V 100µF 22µF DIFFP 10A 95 2.4 6.3V 10V 10 ×2 DIFFN ×2 PINS NOT USED 90 2.0 POWER LOSS (W) IN THIS CIRCUIT: LTM4648 8 INTVCC MODE V 85 1.6 OUT_LCL SW 6 RUN DIFFOUT PHMODE 80 1.2 TRACK/SS VFB TEMP EFFICIENCY (%) LOAD CURRENT (A) 4 COMP GND 0.1µF 6.65k 75 0.8 PGOOD CLKIN 2 400LFM 4648 TA01a 70 0.4 CLKOUT VIN = 3.3V 200LFM VIN = 5V 0LFM 65 0 0 0 2 4 6 8 10 0 20 40 60 80 100 120 LOAD CURRENT (A) AMBIENT TEMPERATURE (°C) 4648 TA01b 4648 TA01c Rev A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Design Resources Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Design Resources Related Parts