|Title||IC UMODULE REG 40VIN 2.5A BUCK 3|
|Company||Linear Technology Corporation|
|Datasheet||Download LTM8065IYPBF datasheet
|Others parts numbering|
Complete Step-Down Switch Mode Power Supply nn Low Noise Silent Switcher® Architecture nn Wide Input Voltage Range: 40V nn Wide Output Voltage Range: nn 2.5A Continuous Output Current, 3.5A Peak nn Selectable Switching Frequency: 3MHz nn External Synchronization nn Programmable Soft-Start nn Tiny, Low Profile × 2.32mm RoHS Compliant BGA PackageDESCRIPTION
The 40VIN, 3.5A peak, 2.5A continuous step-down µModule® (power module) regulator. Included in the package are the switching controller, power switches, inductor and all support components. Operating over an input voltage range to 40V, the LTM8065 supports an output voltage range to 18V and a switching frequency range to 3MHz, each set by a single resistor. Only the input and output filter capacitors are needed to finish the design. The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8065 is packaged in a thermally enhanced, compact over-molded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8065 is RoHS compliant.
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Silent Switcher and Burst Mode are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.APPLICATIONS
Automotive Battery Regulation Power for Portable Products nn Distributed Supply Regulation nn Industrial Supplies nn Wall Transformer RegulationEfficiency vs Load Current 5VOUT from to 40VIN Step-Down Converter
GND C D BANK E F BANK 3 VOUT GND AUX SYNC TR/SS RUN BANK 2 VIN BIAS PG GND RT GND
VIN, RUN, PG Voltage............................................... 42V AUX, VOUT, BIAS Voltage......................................... 19V FB, TR/SS Voltage..................................................... 4V SYNC Voltage............................................................. 6V Maximum Internal Temperature........................... 125°C Storage Temperature............................ to 125°C Peak Reflow Solder Body Temperature................ 260°C
BGA PACKAGE × 2.32mm) BGA PACKAGE TJMAX = 20°C/W, JCbottom = 5.3°C/W JCtop = 5.0°C/W, WEIGHT = 0.5g VALUES DETERMINED PER JEDEC51-9, 51-12
PART MARKING* PART NUMBER LTM8065EY#PBF LTM8065IY#PBF TERMINAL FINISH SAC305 (RoHS) DEVICE LTM8065 FINISH CODE e1 PACKAGE TYPE BGA MSL RATING 3 TEMPERATURE RANGE to 125°C
Consult Marketing for parts specified with wider operating temperature ranges. *Device temperature grade is indicated by a label on the shipping container. Pad or ball finish code is per IPC/JEDEC J-STD-609. Terminal Finish Part Marking: www.linear.com/leadfree
Recommended BGA PCB Assembly and Manufacturing Procedures: www.linear.com/umodule/pcbassembly BGA Package and Tray Drawings: www.linear.com/packaging
The l denotes the specifications which apply over the specified operating temperature range, otherwise specifications are = 25°C. VIN = 12V, RUN = 2V, unless otherwise noted.
PARAMETER Minimum Input Voltage Output DC Voltage Peak Output DC Current Quiescent Current into VIN Quiescent Current into BIAS CONDITIONS VIN Rising RFB Open RFB = 14.3k, VIN = 40V VOUT = 3.3V, fSW = 1MHz RUN = 0V BIAS 0V, No Load, SYNC = 0V, Not Switching BIAS = 5V, RUN = 0V BIAS 5V, No Load, SYNC = 0V, Not Switching BIAS = 5V, VOUT = 3.3V, IOUT = 2.5A, fSW 5.5V < VIN < 36V, IOUT 0.1A < IOUT < 2.5A IOUT = 10.7kLine Regulation Load Regulation Output Voltage Ripple Switching Frequency
Voltage at FB Minimum BIAS Voltage RUN Threshold Voltage RUN Current TR/SS Current TR/SS Pull Down PG Threshold Voltage at FB (Upper) PG Threshold Voltage at FB (Lower) PG Leakage Current PG Sink Current SYNC Threshold Voltage SYNC Voltage SYNC Current TR/SS = 0V TR/SS 0.1V FB Falling (Note 6) FB Rising (Note = 0.1V Synchronization To Enable Spread Spectrum SYNC = 0V (Note 5)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: Unless otherwise noted, the absolute minimum voltage is zero. Note 3: The LTM8065E is guaranteed to meet performance specifications from to 125°C internal. Specifications over the full to 125°C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM8065I is guaranteed to meet specifications over the full to 125°C internal operating temperature range. Note that the maximum internal temperature is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors.
Note 4: The LTM8065 contains overtemperature protection that is intended to protect the device during momentary overload conditions. The internal temperature exceeds the maximum operating junction temperature when the overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 5: Below this specified voltage, internal circuitry will draw power from VIN. Note 6: PG transitions from low to high.
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