LTM8032 - EN55022B Compliant 36V, 2A DC/DC …

1 LTM803218032fgFor more information applicaTionDescripTionEN55022B Compliant 36V, 2A DC/DC Module RegulatorThe LT M 8032 is an electromagnetic compatible (EMC) 36V, 2A DC/DC step-down Module regulator designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, filters and all support components. Operating over an input voltage range of to 36V, the LTM8032 supports an output voltage range of to 10V, and a switching frequency range of 200kHz to , each set by a single resistor. Only the bulk input and output filter capacitors are needed to finish the design. The low profile package enables uti-lization of unused space on the bottom of PC boards for high density point of load LTM8032 is packaged in a thermally enhanced, com-pact and low profile overmolded land grid array (LGA) and ball grid array (BGA) packages suitable for automated assembly by standard surface mount equipment.

2 The LTM8032 is available with SnPb (BGA) or RoHS compli-ant terminal , LT, LT C, LT M, Linear Technology, the Linear logo, Module and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective Noise 5V/2A DC/DC Module RegulatorFeaTuresapplicaTionsn Complete Step-Down Switch Mode Power Supplyn Wide Input Voltage Range: to 36Vn 2A Output Currentn to 10V Output Voltagen Selectable Switching Frequency: 200kHz to EN55022 Class B Compliantn Current Mode Controln Programmable Soft-Startn SnPb (BGA) or RoHS Compliant (LGA and BGA) Finishn Low Profile, Surface Mount LGA (9mm 15mm ) and BGA (9mm 15mm ) Packagesn Automotive Battery Regulationn Power for Portable Productsn Distributed Supply Regulationn Industrial Suppliesn Wall Transformer RegulationLTM8032 EMI Performance907050 EMISSIONS LEVEL (dB V/m)3010806040200 100100 200 300 400 500 FREQUENCY (MHz)600 700 800 900 1000EN55022 CLASS BLIMIT8031 = 700kHz*RUNNING VOLTAGE RANGE.

3 SEE APPLICATIONS FOR START-UP F10 FVOUT5V2 ARUN/SSVIN*7 VDC TO 36 VDCPGOODBIASLTM8032 AUXVOUTSYNC GND8032 TA01aADJLTM803228032fgFor more information , FIN, RUN/SS Voltage ..40 VADJ, RT, SHARE Voltage ..5 VVOUT, AUX ..10 VCurrent from AUX ..100mA(Note 1)GND1 ABCBANK 1 BANK 2 BANK 3 DEFGHJKL234 TOP VIEWLGA PACKAGE71-LEAD (9mm 15mm )567 VOUTVINRTSHAREADJPGOODSYNCRUN/SSFINBIAS AUXTJMAX = 125 C, JA = C/W, JCbottom = C/W, JCtop = C/W, JB = C/W, WEIGHT = VALUES DETERMINED PER JESD51-9 GND1 ABCBANK 1 BANK 2 BANK 3 DEFGHJKL234 TOP VIEWBGA PACKAGE71-LEAD (9mm 15mm )567 VOUTVINRTSHAREADJPGOODSYNCRUN/SSFINBIAS AUXTJMAX = 125 C, JA = C/W, JCbottom = C/W, JCtop = C/W, JB = C/W, WEIGHT = VALUES DETERMINED PER JEDEC 51-9, 51-12pin conFiguraTionabsoluTe MaxiMuM raTingsPART NUMBERPAD OR BALL FINISHPART MARKING*PACKAGE TYPEMSL RATINGTEMPERATURE RANGE (Note 2)DEVICE CODELTM8032EV#PBFAu (RoHS)LTM8032Ve4 LGA3 40 C to 125 CLTM8032IV#PBFAu (RoHS)LTM8032Ve4 LGA3 40 C to 125 CLTM8032 MPV#PBFAu (RoHS)

4 LTM8032 MPVe4 LGA3 55 C to 125 CLTM8032EY#PBFSAC305 (RoHS)LTM8032Ye1 BGA3 40 C to 125 CLTM8032IY#PBFSAC305 (RoHS)LTM8032Ye1 BGA3 40 C to 125 CLTM8032 MPY#PBFSAC305 (RoHS)LTM8032Ye1 BGA3 55 C to 125 CLTM8032 MPYSnPb (63/37)LTM8032Ye0 BGA3 55 C to 125 CorDer inForMaTionPGOOD, ..25 VVIN + BIAS ..56 VMaximum Junction Temper atur e (Note 2) ..125 CSolder Temper atur e ..245 CConsult 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. Pb-free and Non-Pb-free Part Markings: Recommended LGA and BGA PCB Assembly and Manufacturing Procedures: LGA and BGA Package and Tray Drawings: more information characTerisTicsNote 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.

5 Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and 2: The LTM8032E is guaranteed to meet performance specifications from 0 C to 125 C internal. Specifications over the 40 C to 125 C internal temperature range are assured by design, characterization and The l denotes the specifications which apply over the full internal operating temperature range, otherwise specifications are at TA = 25 C. VIN = 10V, VRUN/SS = 10V, VBIAS = 3V, unless otherwise DC DC < IOUT 2A, RADJ Open < IOUT 2A, RADJ = 10V VIOUTC ontinuous Output DC CurrentVIN = 24V2 AIQ(VIN)VIN Quiescent CurrentVRUN/SS = VBIAS = 3V, Not Switching VBIAS = 0V, Not Switching 25 88 60 120 A A AIQ(BIAS)BIAS Quiescent CurrentVRUN/SS = VBIAS = 3V, Not Switching VBIAS = 0V, Not Switching 60 1 120 5 A A A VOUT VOUTLine Regulation10V VIN 36V, IOUT = 1A, VOUT = RegulationVIN = 24V, IOUT 2A, VOUT = (AC_RMS)Output Ripple (RMS)VIN = 24V, IOUT = 2A, VOUT = FrequencyRT = 113k325kHzVADJV oltage at ADJ Pinl765790815mVVBIAS(MIN)Minimum BIAS Voltage for Proper Out of ADJ PinVRUN/SS = 0V, VADJ = 0V, VOUT = 1V4 AIRUN/SSRUN/SS Pin CurrentVRUN/SS = AVIH(RUN/SS)RUN/SS Input High (RUN/SS)RUN/SS Input Low (TH)

6 ADJ Voltage Threshold for PGOOD to Switch730mVIPGOPGOOD LeakageVPG = AIPGSINKPGOOD Sink CurrentVPG = AVSYNCILSYNC Input Low ThresholdfSYNC = Input High ThresholdfSYNC = (BIAS)SYNC Pin Bias CurrentVSYNC = 0V, VBIAS = AVIN(RIPPLE)550kHz Narrowband Conducted Emission 1 MHz Narrowband Conducted Emission 3 MHz Narrowband Conducted EmissionVIN = 24V, VOUT = , IOUT = 2A, fSW = 550kHz, 5 H LISN89 69 51dB V dB V dB Vcorrelation with statistical process controls. LTM8032I is guaranteed to meet specifications over the full 40 C to 125 C internal operating temperature range. The LTM8032MP is guaranteed to meet specifications over the full 55 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 more information perForMance characTerisTicsInput Current vs Output Current, Current vs Output Current, 5 VOUTI nput Current vs Output Current, 8 VOUTM inimum Required Input Voltage vs Output Voltage, IOUT = 2 AMinimum Required Input Voltage vs Load Current, VOUT = Required Input Voltage vs Load Current, VOUT = Efficiency5 VOUT Efficiency8 VOUT EfficiencyTA = 25 C, unless otherwise CURRENT (A) (%) CURRENT (A) (%) G028090100101012 VIN24 VIN36 VINOUTPUT CURRENT (A) (%) G038090100101012 VIN24 VIN36 VINOUTPUT CURRENT (mA)0 INPUT CURRENT (mA)8001000120020008032 CURRENT (mA)00 INPUT CURRENT (mA)

7 200400600800100012005001000150020008032 G0512 VIN24 VIN36 VINOUTPUT CURRENT (mA)1 INPUT CURRENT (mA)10001200140020008032 G068006000500100015004002001800160012 VIN24 VIN36 VINOUTPUT VOLTAGE (V)02 INPUT VOLTAGE (V)46810121424688032 G07 10 LOAD CURRENT (mA) VOLTAGE (V) G08TO RUNTO STARTLOAD CURRENT (mA) VOLTAGE (V) G09TO RUNTO STARTRUN/SS ENABLEDLTM803258032fgFor more information perForMance characTerisTicsOutput Current vs Input Voltage (Output Shorted)Input Current vs Input Voltage (Output Shorted)Temperature Rise vs Load Current, VOUT = (LGA)Temperature Rise vs Load Current, VOUT = (LGA)Temperature Rise vs Load Current, VOUT = 5V (LGA)Temperature Rise vs Load Current, VOUT = 8V (LGA)Minimum Required Input Voltage vs Load Current, VOUT = 5 VMinimum Required Input Voltage vs Load Current, VOUT = 8 VBias Current vs Output CurrentTA = 25 C, unless otherwise CURRENT (mA)0 INPUT VOLTAGE (V) RUNTO STARTRUN/SS ENABLEDLOAD CURRENT (mA) VOLTAGE (V) G11TO RUNTO STARTRUN/SS ENABLEDOUTPUT CURRENT (mA)00 BIAS CURRENT (mA)510152025305001000150020008032 VOLTAGE (V)0 OUTPUT CURRENT (mA)240026002800408032 G13220020001600102030180032003000 INPUT VOLTAGE (V)00 INPUT CURRENT (mA)20040060080010001200102030408032 G14 LOAD CURRENT (mA)025303520008032 G1520155001000150025001050 TEMPERATURE RISE ( C)5 VIN12 VIN24 VIN36 VINLOAD CURRENT (mA)0 TEMPERATURE RISE ( C)152025150025008032 G161050500100020003035405 VIN12 VIN24 VIN36 VINLOAD CURRENT (mA)0 TEMPERATURE RISE ( C)

8 152025150025008032 G1710505001000200030354012 VIN24 VIN36 VINLOAD CURRENT (mA)0 TEMPERATURE RISE ( C)30405020008032 G182010253545155050010001500250012 VIN24 VIN36 VINLTM803268032fgFor more information perForMance characTerisTicsTemperature Rise vs Load Current, VOUT = 10V (LGA)Radiated EmissionsRadiated EmissionsTA = 25 C, unless otherwise Rise vs Load Current, VOUT = (BGA)Temperature Rise vs Load Current, VOUT = 5V (BGA)Temperature Rise vs Load Current, VOUT = (BGA)Temperature Rise vs Load Current, VOUT = 10V (BGA)LOAD CURRENT (mA)0 TEMPERATURE RISE ( C)30405020008032 G192010253545155050010001500250024 VIN36 VIN907050 EMISSIONS LEVEL (dB V/m)3010 100 VIN = 36 VVOUT = 10V AT 2A100 200 300 400 500 FREQUENCY (MHz)600 700 800 900 10008031 G20907050 EMISSIONS LEVEL (dB V/m)3010 100 VIN = 13 VVOUT = 10V AT 2A100 200 300 400 500 FREQUENCY (MHz)600 700 800 900 10008031 G21 LOAD CURRENT (mA)00 TEMPERATURE RISE ( C)101520255001500200010008032 G223035525005 VIN12 VIN24 VIN36 VINLOAD CURRENT (mA)00 TEMPERATURE RISE ( C)15205001500200010008032 G23253035105250012 VIN24 VIN36 VINLOAD CURRENT (mA)00 TEMPERATURE RISE ( C)15205001500200010008032 G2425353040105250012 VIN24 VIN36 VINLOAD CURRENT (mA)00 TEMPERATURE RISE ( C)305001500200010008032 G254050602010250024 VIN36 VINLTM803278032fgFor more information FuncTionsVIN (Bank 3): The VIN pin supplies current to the LTM8032 s internal regulator and to the internal power switch.

9 This pin must be locally bypassed with an external, low ESR capacitor of at least (K3, L3): Filtered Input. This is the node after the input EMI filter. Use this only if there is a need to modify the behavior of the integrated EMI filter or if VIN rises or falls rapidly; otherwise, leave these pins unconnected. See the Applications Information section for more (Bank 2): Tie these GND pins to a local ground plane below the LTM8032 and the circuit components. In most applications, the bulk of the heat flow out of the LTM8032 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. Return the feedback divider (RADJ) to this (Bank 1): Power Output Pins. Apply the output filter capacitor and the output load between these pins and GND (Pin H5): Low Current Voltage Source for BIAS.

10 The AUX pin is internally connected to VOUT and is placed adjacent to the BIAS pin to ease printed circuit board routing. Although this pin is internally connected to VOUT, do not connect this pin to the load. If this pin is not tied to BIAS, leave it (Pin H4): The BIAS pin connects to the internal power bus. Connect to a power source greater than If the output is greater than , connect this pin to AUX. If the output voltage is less, connect this to a voltage source between and 25V. Also, make sure that BIAS + VIN is less than (Pin L5): Pull RUN/SS pin to less than to shut down the LTM8032 . Tie to or more for normal operation. If the shutdown feature is not used, tie this pin to the VIN pin. RUN/SS also provides a soft-start function; see the Applications Information (Pin G7): The RT pin is used to program the switching frequency of the LTM8032 by connecting a resistor from this pin to ground.