LTM8027 - 60V, 4A DC/DC µModule Regulator

1 LTM802718027fdFor more information APPLICATIONFEATURESAPPLICATIONSDESCRIPTI ON60V, 4A DC/DC Module RegulatorThe LT M 8027 is a complete 4A, DC/DC step-down power supply . Included in the package are the switching control-ler, power switches, inductor and all support components. Operating over an input voltage range of to 60V ( minimum voltage to start), the LTM8027 supports output voltages up to 24V, and a switching frequency range of 100kHz to 500kHz, each set by a single resistor. Only the bulk 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 den-sity point of load regulation.

2 A built-in soft-start timer is adjustable with a small LTM8027 is packaged in a compact (15mm 15mm ) over-molded land grid array (LGA) and (15mm 15mm ) BGA package suitable for automated assembly by standard surface mount equipment. The LTM8027 is available with SnPb (BGA) or RoHS compli-ant terminal , LT, LT C, LT M, Linear Technology, the Linear logo and Module are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective , 16 VIN to 60 VIN DC/DC Module Regulatorn Complete Switch Mode power Supplyn Wide Input Voltage Range: to 60V ( Minimum Voltage to Start)n Wide Output Voltage Range.

3 To 24V (See Table 2)n 4A Output Currentn Programmable Soft-Startn 9 A Shutdown supply Currentn Selectable Switching Frequency Current Mode Controln Up to 95% Efficiencyn SnPb (BGA) or RoHS Compliant (LGA and BGA) Finishn Surface Mount LGA (15mm 15mm ) and (15mm 15mm ) BGA Packagesn 12V and 42V Automotive and Heavy Equipmentn 48V Telecom power Suppliesn Avionics and Industrial Control Systemsn Distributed power ConvertersEfficiency vs LoadLOAD (A)00 EFFICIENCY (%)1030405010024 VIN70128027 TA01b2080906034 VINRUNSSSYNCRTADJVOUTGND3845 TA01aLTM8027 VIN16V TO F 222 F 4 BIAS1 BIAS2 AUXLTM802728027fdFor more information #orderinfoABSOLUTE MAXIMUM RATINGSVIN Voltage.

4 65 VBIAS1 ..15 VBIAS2 ..24 VSYNC, ADJ, RT, RUN, SS Voltages ..5 VCurrent into RUN Pin (Note 2) ..1mAVOUT, AUX ..25V (Note 1)ORDER INFORMATIONPART NUMBERPAD OR BALL FINISHPART MARKING*PACKAGE TYPEMSL RATINGTEMPERATURE RANGE (See Note 3)DEVICE FINISH CODELTM8027EV#PBF Au (RoHS)LTM8027V e4 LGA3 40 C to 125 C LTM8027IV#PBF Au (RoHS)LTM8027V e4 LGA3 40 C to 125 C LTM8027 MPV#PBF Au (RoHS)LTM8027V e4 LGA3 55 C to 125 C LTM8027EY#PBF SAC305 (RoHS)LTM8027Y e1 BGA3 40 C to 125 C LTM8027IY#PBF SAC305 (RoHS)LTM8027Y e1 BGA3 40 C to 125 C LTM8027 IYSnPb (63/37)LTM8027Y e0 BGA3 40 C to 125 C LTM8027 MPY#PBF SAC305 (RoHS)

5 LTM8027Y e1 BGA3 55 C to 125 C LTM8027 MPY SnPb (63/37)LTM8027Y e0 BGA3 55 C to 125 C PIN CONFIGURATION LGA PACKAGE113-LEAD (15mm 15mm ) TOP VIEWRTA1234567891011B C D EF G H J K LSYNCADJAUXVOUTBANK 1 GNDBANK 2 VINBANK 3 BIAS1 SSRUNBIAS2 TJMAX = 125 C, JA = C/W, JC(TOP) = C/W, JC(BOTTOM) = C/W, JBOARD = C/W VALUES DETERMINED PER JESD 51-9 WEIGHT = GRAMS BGA PACKAGE113-LEAD (15mm 15mm ) TOP VIEWRTA1234567891011B C D EF G H J K LSYNCADJAUXVOUTBANK 1 GNDBANK 2 VINBANK 3 BIAS1 SSRUNBIAS2 TJMAX = 125 C, JA = C/W, JC(TOP) = C/W, JC(BOTTOM) = C/W, JBOARD = C/W VALUES DETERMINED PER JESD 51-9 WEIGHT = GRAMSC onsult Marketing for parts specified with wider operating temperature ranges.

6 *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: Out of AUX ..200mAInternal Operating Temper atur e (Note 3) E-, I- Grade .. 40 C to 125 C MP-Grade .. 55 C to 125 CPeak Solder Reflow Body Temper atur e ..245 CStorage Temper atur e Range .. 55 C to 125 CLTM802738027fdFor more information CHARACTERISTICSNote 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.

7 Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and 2: The RUN pin is internally clamped to 3: The LTM8027E is guaranteed to meet performance specifications from 0 C to 125 C internal operating temperature. 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 LTM8027I is guaranteed to meet specifications over the full SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITSV IN Input DC Voltage(Note 5) Output DC Voltage0A < IOUT 4A, VIN = 48V24 VIOUTO utput DC CurrentVIN 60V, VOUT = 12V, (Note 4)04 AVIN(START)Minimum Start VOUT/ VIN Line RegulationVOUT = 12V, 15V< VIN < 60V, ILOAD = VOUT/ ILOADLoad RegulationVOUT = 12V, VIN = 24V, 0A < ILOAD (RISING)Input Undervoltage Lockout Threshold (Rising)(Note 5) (FALLING)Input Undervoltage Lockout Threshold (Falling)(Note 5)

8 Voltage VIQ(VIN)Quiescent Current into INVBIAS = VAUX, VOUT = 12 VDC, No Load VRUN = 0V39 9mA AVBIAS1 BIAS1 Undervoltage Lockout (Rising) BIAS1 Undervoltage Lockout (Falling) 6V VIBIAS1 Current into BIAS1No Load RUN = 0V25 25mA AVBIAS2 Minimum BIAS2 Voltage3 VIBIAS2 Current Into BIAS21 AVBIAS1(MINOV)Minimum Voltage to Overdrive Internal Regulator (INTVCC) Feedback Resistor499k VRUN(RISING)RUN Enable Voltage (Rising) (FALLING)RUN Enable Voltage (Falling) FrequencyRT = 187k RT = 100 500kHz kHzRSYNCSYNC Input Resistance40k VSYNC(TH)SYNC Voltage ThresholdfSYNC = Charging Current2 A The l denotes the specifications which apply over the full internal operating temperature range, otherwise specifications are at TA = 25 C.

9 VIN = 20V, BIAS1 = BIAS2 = 10V, RUN = 2V, unless otherwise noted. 40 C to 125 C internal operating temperature range. The LTM8027MP is guaranteed to meet specifications over the full 55 C to 125 C internal operating 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 4: The maximum continuous output current may be derated by the LTM8027 junction 5: VIN voltages below the start-up threshold ( ) are only supported when BIAS1 is externally driven above more information PERFORMANCE CHARACTERISTICSE fficiency vs Load, VOUT = vs Load, VOUT = 8 VLOAD (A)00 EFFICIENCY (%)1030405010070128027 G0120809060345 VIN12 VIN24 VIN36 VINE fficiency vs Load, VOUT = (A)00 EFFICIENCY (%)1030405010070128027 G0220809060345 VIN12 VIN24 VIN36 VIN48 VIN60 VINE fficiency vs Load, VOUT = 5 VLOAD (A)00 EFFICIENCY (%)1030405010070128027 G03208090603412 VIN24 VIN36 VIN48 VIN60 VINLOAD (A)

10 00 EFFICIENCY (%)1030405010070128027 G04208090603412 VIN24 VIN36 VIN48 VIN60 VINE fficiency vs Load, VOUT = 12 VLOAD (A)00 EFFICIENCY (%)1030405010070128027 G05208090603424 VIN36 VIN48 VIN60 VINE fficiency vs Load, VOUT = 15 VLOAD (A)00 EFFICIENCY (%)1030405010070128027 G06208090603424 VIN36 VIN48 VIN60 VINE fficiency vs Load, VOUT = 18 VLOAD (A)00 EFFICIENCY (%)1030405010070128027 G07208090603424 VIN36 VIN48 VIN60 VINE fficiency vs Load, VOUT = 24 VLOAD (A)00 EFFICIENCY (%)1030405010070128027 G08208090603436 VIN48 VIN60 VINI nput Current vs VIN Output Shorted(TA = 25 C unless otherwise noted)INPUT VOLTAGE (V)0 INPUT CURRENT (A) more information Current vs Load, VOUT = Current vs Load, VOUT = Current vs Load, VOUT = 5 VInput Current vs Load, VOUT = 8 VInput Current vs Load, VOUT = 12 VInput Current vs Load, VOUT = 15 VInput Current vs Load, VOUT = 18 VInput Current vs Load, VOUT = 24 VBias Current vs Load, VOUT = PERFORMANCE CHARACTERISTICS(TA = 25 C unless otherwise noted)LOAD (A)