LTM8063 (Rev. C) - Analog Devices

1 LTM80631 Rev CFor more information FeedbackTYPICAL APPLICATIONFEATURESAPPLICATIONSDESCRIPTI ON40 VIN, 2A Silent Switcher Module RegulatorThe LT M 8063 is a 40 VIN, 2A continuous, peak, step-down Module (power module) regulator. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of to 40V, the LTM8063 supports an output voltage range of to 15V and a switching frequency range of 200kHz to , each set by a single resistor. Only the input and output filter capacitors are needed to finish the low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8063 is packaged in a thermally enhanced, compact over-molded ball grid array (BGA) pack-age suitable for automated assembly by standard surface mount equipment. The LTM8063 is RoHS registered trademarks and trademarks are the property of their respective vs Load Current5 VOUT from to 40 VIN Step-Down Converter nLow Noise Silent Switcher Architecture nWide Input Voltage Range: to 40V nWide output Voltage Range: to 15V n2A Continuous output Current at 12 VIN, 5 VOUT, TA = 85 C Peak Current nSelectable Switching Frequency: 200kHz to nExternal Synchronization nConfigurable as an Inverter 4mm BGA Package nAutomotive Battery Regulation nPower for Portable Products nDistributed Supply Regulation nIndustrial Supplies nWall Transformer Regulation1 F22 TO 40 VFBGNDRUNSYNCRT8063 TA01aPINS NOT USED IN THIS CIRCUIT: TR/SS, PG12 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 TA01bLTM80632 Rev CFor more information OF CONTENTS Features.

2 1 Applications ..1 Typical Application .. Maximum Ratings ..3 Order Information ..3 Pin Configuration ..3 Electrical Characteristics ..4 Typical Performance Characteristics ..5 Pin Functions ..11 Block Diagram .. Information ..13 Typical Applications ..20 Package Photo ..21 Package Description ..21 Revision History ..23 Typical Application ..24 Related Parts ..24 LTM80633 Rev CFor more information CONFIGURATIONABSOLUTE MAXIMUM RATINGSVIN, RUN, PG Voltage ..42 VVOUT Voltage ..19 VFB, TR/SS Voltage ..6 VMaximum Internal Temperature ..125 CStorage 55 C to 125 CPeak Reflow Solder Body Temperature ..260 C(Notes 1, 2)GNDBANK 1 GNDBANK 3 VOUTBANK 2 VINFGEABCD2143 BGA PACKAGE28-LEAD ( 4mm ) BGA PACKAGETJMAX = 125 C, JA = C/W, JCbottom = 13 C/W JCtop = C/W, JB = C/W, WEIGHT = VALUES DETERMINED PER JEDEC51-9, 51-12 FBPGSYNCFBTR/SSRTTOP VIEWGNDRUNORDER INFORMATIONPART NUMBERTERMINAL FINISHPART MARKING*PACKAGE TYPEMSL RATINGTEMPERATURE RANGEDEVICE FINISH CODELTM8063EY#PBFSAC305 (RoHS)8063vBGA3 40 C to 125 CLTM8063IY#PBFLTM8063 IYSnPb (63/37) Device temperature grade is indicated by a label on the shipping container.

3 Pad or ball finish code is per IPC/JEDEC J-STD-609. BGA Package and Tray Drawings This product is not recommended for second side reflow. This product is moisture sensitive. For more information, go to Recommended BGA PCB Assembly and Manufacturing CFor more information CHARACTERISTICSNote 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 2: Unless otherwise noted, the absolute minimum voltage is 3: The LTM8063E is guaranteed to meet performance specifications from 0 C to 125 C internal. Specifications over the full 40 C to 125 C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM8063I is guaranteed to meet specifications over the full 40 C 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 Input VoltageVIN DC VoltageRFB Open RFB = , VIN = 15V VPeak output DC CurrentVOUT = , fSW = Current into VINRUN = 0V No Load, SYNC = 0V, Not Switching3 8 A ALine < VIN < 36V, IOUT = < IOUT < Voltage RippleIOUT = 2A15mVSwitching FrequencyRT = 232k , VIN = 8V RT = RT = 200 1 MHz MHzVoltage at FB l760774786mVRUN Threshold Voltage Current1 ATR/SS CurrentTR/SS = 0V2 ATR/SS Pull DownTR/SS = PG Threshold Voltage at FB (Upper)FB Falling (Note 5) Threshold Voltage at FB (Lower)FB Rising (Note 5)

4 Leakage CurrentPG = 42V1 APG Sink CurrentPG = ASYNC Threshold VoltageTo Enable Spread Spectrum CurrentSYNC = 2V5 A The l denotes the specifications which apply over the specified operating temperature range, otherwise specifications are at TJ = 25 C. VIN = 12V, RUN = 2V, unless otherwise 4: The LTM8063 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 5: PG transitions from low to CFor more information PERFORMANCE CHARACTERISTICSE fficiency, VOUT = 1 VEfficiency, VOUT = , VOUT = = 25 C, unless otherwise , VOUT = , VOUT = 2 VEfficiency, VOUT = , VOUT = , VOUT = 5 VEfficiency, VOUT = 8V12 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0112 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0212 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0312 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0412 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0512 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0612 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0712 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G0812 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G09 LTM80636 Rev CFor more information PERFORMANCE CHARACTERISTICSTA = 25 C, unless otherwise , VOUT = 12 VEfficiency, VOUT = 15 VEfficiency, VOUT = , VOUT = 5 VEfficiency, VOUT = 8 VEfficiency, VOUT = 12 VEfficiency, VOUT = 15 VInput vs Load Current, VOUT = 1 VInput vs Load Current, VOUT = CURRENT (A) (%)

5 8063 G1024 VIN36 VINLOAD CURRENT (A) (%)8063 G1112 VIN24 VIN36 VINLOAD CURRENT (A) (%)8063 G1212 VIN24 VINLOAD CURRENT (A) (%)8063 G1312 VIN24 VINLOAD CURRENT (A) (%)8063 G1412 VIN24 VINLOAD CURRENT (A) (%)8063 G1512 VIN24 VINLOAD CURRENT (A) (%)8063 G1612 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G1712 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G18 LTM80637 Rev CFor more information PERFORMANCE CHARACTERISTICSI nput vs Load Current VOUT = vs Load Current VOUT = vs Load Current VOUT = 2 VInput vs Load Current VOUT = vs Load Current VOUT = 5 VInput vs Load Current VOUT = 8 VInput vs Load Current VOUT = 12 VInput vs Load Current VOUT = 15 VInput vs Load Current VOUT = = 25 C, unless otherwise CURRENT (A) CURRENT (A)8063 G1912 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G2012 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G2112 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G2212 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G2312 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G2424 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G2524 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G2612 VIN24 VIN36 VINLOAD CURRENT (A) CURRENT (A)8063 G27 LTM80638 Rev CFor more information PERFORMANCE CHARACTERISTICSTA = 25 C, unless otherwise vs Load Current VOUT = 5 VInput vs Load Current VOUT = 8 VInput vs Load Current VOUT = 12 VInput vs Load Current VOUT = 15 VMaximum Load Current vs VINM aximum Load Current vs VINI nput Current vs VIN VOUT Short CircuitedDerating, VOUT = 1V, DC2494A Demo BoardDerating, VOUT = , DC2494A Demo Board12 VIN24 VINLOAD CURRENT (A) CURRENT (A)8063 G2812 VIN24 VINLOAD CURRENT (A) CURRENT (A)8063 G2912 VIN24 VINLOAD CURRENT (A) CURRENT (A)8063 G31 5 VOUT 8 VOUTINPUT VOLTAGE (V)0102030400123 MAXIMUM LOAD CURRENT (A)8063 G32 12 VOUT 15 VOUTINPUT VOLTAGE (V) LOAD CURRENT (A)8063 G33 VIN (V)0102030400300600900 INPUT CURRENT (mA)8063 G3412 VIN24 VINLOAD CURRENT (A)

6 CURRENT (A)8063 G3012 VIN24 VIN36 VIN02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G350 LFMAMBIENT TEMPERATURE ( C)12 VIN24 VIN36 VIN02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G360 LFMAMBIENT TEMPERATURE ( C)LTM80639 Rev CFor more information , VOUT = , DC2494A Demo BoardDerating, VOUT = 2V, DC2494A Demo BoardDerating, VOUT = , DC2494A Demo BoardTYPICAL PERFORMANCE CHARACTERISTICSD erating, VOUT = , DC2494A Demo BoardDerating, VOUT = , DC2494A Demo BoardDerating, VOUT = , DC2494A Demo BoardDerating, VOUT = 5V, DC2494A Demo BoardTA = 25 C, unless otherwise , VOUT = 5V, DC2494A Demo BoardDerating, VOUT = 8V, DC2494A Demo Board12 VIN24 VIN36 VIN02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G370 LFMAMBIENT TEMPERATURE ( C)12 VIN24 VIN36 VIN02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G380 LFMAMBIENT TEMPERATURE ( C)12 VIN24 VIN36 VIN02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G390 LFMAMBIENT TEMPERATURE ( C)0 LFM02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G40 AMBIENT TEMPERATURE ( C)12 VIN24 VIN36 VIN0 LFM02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G41 AMBIENT TEMPERATURE ( C)12 VIN24 VIN36 VIN02550751001250123 MAXIMUM LOAD CURRENT (A)8063 G42 AMBIENT TEMPERATURE ( C)0 LFMfSW = 2 MHz12 VIN24 VIN36 VIN0 LFM02550751001250123 MAXIMUM LOAD CURRENT (A)AMBIENT TEMPERATURE ( C)12 VIN24 VIN36 VIN8063 G430 LFMfSW = 2 MHz02550751001250123 MAXIMUM LOAD CURRENT (A)AMBIENT TEMPERATURE ( C)8063 G4412 VIN24 VIN36 VIN0 LFM12 VIN24 VIN36 VINAMBIENT TEMPERATURE ( C)02550751001250123 MAXIMUM LOAD CURRENT (A)

7 8063 G45 LTM806310 Rev CFor more information PERFORMANCE CHARACTERISTICSTA = 25 C, unless otherwise , VOUT = 12V, DC2494A Demo BoardDerating, VOUT = 15V, DC2494A Demo BoardDerating, VOUT = , DC2494A Demo BoardDerating, VOUT = 5V, DC2494A Demo BoardDerating, VOUT = 8V, DC2494A Demo BoardDerating, VOUT = 12V, DC2494A Demo BoardDropout Voltage vs Load Current VOUT = 5 VDerating, VOUT = 15V, DC2494A Demo BoardCISPR22 Class B Emissions DC2494A Demo Board, VOUT = 5V, C9 = F, No EMI Filter, 1A Load0 LOAD CURRENT (A)AMBIENT TEMPERATURE ( C)8063 G5112 VIN24 VINLOAD CURRENT (A) VOLTAGE (mV)8063 G540 LOAD CURRENT (A)AMBIENT TEMPERATURE ( C)8063 G4624 VIN36 VIN0 LFMC) LOAD CURRENT (A)8063 G47 AMBIENT TEMPERATURE ( C)24 VIN36 VIN0 LOAD CURRENT (A)AMBIENT TEMPERATURE ( C)8063 G4812 VIN24 VIN36 VIN0 LOAD CURRENT (A)8063 G49 AMBIENT TEMPERATURE ( C)12 VIN24 VIN0 LFMC)AMBIENT TEMPERATURE ( C) LOAD CURRENT (A)8063 G5012 VIN24 VIN0 LFMC) LOAD CURRENT (A)AMBIENT TEMPERATURE ( C)8063 G5212 VIN24 VINHORIZONTALVERTICALFREQUENCY (MHz)02004006008001000 551525354555 AMPLITUDE (dBuV/m)8063 G53 LTM806311 Rev CFor more information FUNCTIONSGND (Bank 1, A1, A4): Tie these GND pins to a local ground plane below the LTM8063 and the circuit components.

8 In most applications, the bulk of the heat flow out of the LTM8063 is through these pads, so the printed circuit design has a large impact on the thermal performance of the part. See the PCB Layout and Thermal Considerations sections for more details. VIN (Bank 2): VIN supplies current to the LTM8063 s in-ternal regulator and to the internal power switches. These pins must be locally bypassed with an external, low ESR capacitor; see Table 1 for recommended (Bank 3): Power output Pins. Apply the output filter capacitor and the output load between these pins and GND (Pin B3): Pull the RUN pin below to shut down the LTM8063 . Tie to or more for normal operation. If the shutdown feature is not used, tie this pin to the VIN (Pin C1): The RT pin is used to program the switching frequency of the LTM8063 by connecting a resistor from this pin to ground. The Applications Information section of the data sheet includes a table to determine the resistance value based on the desired switching frequency.

9 Minimize capacitance at this pin. Do not drive this (Pin B2): External clock synchronization input and operational mode. This pin programs four different operating modes: 1. Burst Mode Operation. Tie this pin to ground for Burst Mode operation at low output loads this will result in ultralow quiescent current. 2. Pulse-skipping mode. Float this pin for pulse-skipping mode. This mode offers full frequency operation down to low output loads before pulse skipping occurs. 3. Spread spectrum mode. Tie this pin high (between and ) for pulse-skipping mode with spread spectrum modulation. 4. Synchronization mode. Drive this pin with a clock source to synchronize to an external frequency. During synchro-nization the part will operate in pulse-skipping (Pin B1): The PG pin is the open-collector output of an internal comparator. PG remains low until the FB pin voltage is within about 10% of the final regulation volt-age. The PG signal is valid when VIN is above If VIN is above and RUN is low, PG will drive low.

10 If this function is not used, leave this pin (Pin A2): The LTM8063 regulates its FB pin to Connect the adjust resistor from this pin to ground. The value of RFB is given by the equation RFB = (VOUT ), where RFB is in k .TR/SS (Pin A3): The TR/SS pin is used to provide a soft-start or tracking function. The internal 2 A pull-up current in combination with an external capacitor tied to this pin creates a voltage ramp. If TR/SS is less than about , the FB voltage tracks to this value. The soft-start ramp time is approximated by the equation t = C where C is in F. For tracking, tie a resistor divider to this pin from the tracked output . This pin is pulled to ground with an internal MOSFET during shutdown and fault conditions; use a series resistor if driving from a low impedance output . This pin may be left floating if the tracking function is not CFor more information DIAGRAMLTM8063 Block DiagramVOUTVINFBPGGNDRUNTR/SSSYNCRT8063 H249kOPERATIONThe LTM8063 is a stand-alone non-isolated step-down switching DC/DC power supply that can deliver up to The continuous current is determined by the internal operating temperature.