Datasheet LTM4649 (Analog Devices)

LTM4649 10A Step-Down DC/DC µModule Regulator
FEATURES DESCRIPTION
n
10A DC Output Current
The LTM®4649 is a complete 10A high efficiency switching n
Input Voltage Range: 4.5V to 16V
mode step-down DC/DC µModule® regulator in a 9mm × n
Output Voltage Range: 0.6V Up to 3.3V
15mm × 4.92 BGA package. Included in the package are the n
No Heat Sink or Current Derating Up to 85°C Ambi-
switching controller, power FETs, inductor, and all support
ent Temperature
components. Operating over an input voltage range of 4.5V n
±1.5% Total DC Voltage Output Error
to 16V, the LTM4649 supports an output voltage range of n
Multiphase Operation with Current Sharing
0.6V to 3.3V, set by a single external resistor. This high n
Remote Sense Amplifier
efficiency design delivers 10A continuous current. Only n Built-In General Purpose Temperature Monitor bulk input and output capacitors are needed. n Selectable Pulse-Skipping Mode/Burst Mode® Opera- High switching frequency and a current mode architecture tion 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 9mm × 15mm × 4.92mm BGA Package sequencing. Fault protection features include output overvoltage and
APPLICATIONS
overcurrent protection. The LTM4649 is offered in a small n 9mm × 15mm × 4.92mm BGA package available with SnPb Telecom, Networking and Industrial Equipment n or RoHS compliant terminal finish. Point of Load Regulation L, LT, LTC, LTM, Burst Mode, µModule, PolyPhase, Linear Technology and the Linear logo are registered trademarks of Analog Devices, Inc. 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.
TYPICAL APPLICATION 4.5V to 16V Input, 1.5V Output DC/DC Efficiency and Power Loss Current Derating: 12V Input, µModule Regulator at 12V and 5V Input 1.5VOUT, No Heat Sink
95 3.0 12 CLKIN FREQ V V IN OUT VIN VOUT 4.5V TO 16V 1.5V 90 2.5 10 22µF INTV 10A CC VOUT_LCL 16V 100µF POWER LOSS (W) ×2 SW DIFFOUT 6.3V 85 2.0 8 RUN DIFFP ×2 LTM4649 MODE DIFFN 80 1.5 6 PHMODE VFB TRACK/SS COMP EFFICIENCY (%) 75 1.0 LOAD CURRENT (A) 4 TEMP PGOOD 6.65k 0.1µF GND CLKOUT 70 0.5 2 400LFM VIN = 12V 200LFM V 0LFM 4649 TA01a IN = 5V 65 0 0 0 2 4 6 8 10 0 20 40 60 80 100 120 LOAD CURRENT (A) 4649 TA01b AMBIENT TEMPERATURE (°C) 4649 TA01c 4649fc For more information www.linear.com/LTM4649 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Revision History Typical Application Design Resources Related Parts