POWER LOSS (mW) LTM8021 36V , 500mA IN Step-Down DC/DC Module Fea T Descrip T n Complete Switch Mode Power Supply The LTM 8021 is a 36V 500mA, step-down DC/DC IN n Wide Input Voltage Range: 3V to 36V Module . Included in the package are the switching n 500mA Output Current controller, power switches, inductor, and all support n 0.8V to 5V Output Voltage components. Operating over an input voltage range of 3V n Fixed 1.1MHz Switching Frequency to 36V, the LTM8021 supports an output voltage range of n Current Mode Control 0.8V to 5V, set by a single resistor. Only an output and n (e4) RoHS Compliant Package with Gold bulk input capacitor are needed to finish the design. Pad Finish The low profile package (2.82mm) enables utilization of n Programmable Soft-Start unused space on the bottom of PC boards for high den- n Tiny, Low Profile (11.25mm 6.25mm 2.82mm) sity point of load regulation. A built-in soft-start timer is Surface Mount LGA Package adjustable with just a resistor and capacitor. a T The LTM8021 is packaged in a thermally enhanced, compact (11.25mm 6.25mm) and low profile (2.82mm) n Automotive Battery Regulation overmolded land grid array (LGA) package suitable n Power for Portable Products for automated assembly by standard surface mount n Distributed Supply Regulation equipment. The LTM8021 is RoHS compliant. n Industrial Supplies L, LT, LTC, LTM, Module, PolyPhase, Linear Technology and the Linear logo are registered n Wall Transformer Regulation trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical a T Efficiency and Power Loss 7V to 36V , 5V/500mA Module Regulator IN IN 90 450 400 LTM8021 V * IN 80 V OUT 7V TO IN OUT 5V AT 500mA 350 36V EFFICIENCY 70 300 BIAS RUN/SS 250 60 GND ADJ 200 1F 2.2F 50 150 19.1k POWER 100 LOSS 8021 TA01a 40 50 *RUNNING VOLTAGE RANGE. PLEASE REFER TO THE 30 0 APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS. 1.00 10.00 100.00 1000.00 LOAD CURRENT (mA) 8021 TA01b 8021fd For more information www.linear.com/LTM8021 1 EFFICIENCY (%) ion pplica ions pplica ion uresLTM8021 a Te Maxi Mu M r a T p in c F T (Note 1) TOP VIEW V , RUN/SS Voltage .................................................40V IN RUN/SS Above V ......................................................3V IN 5 V IN V OUT ADJ Voltage ................................................................5V BANK 1 BANK 2 4 BIAS Voltage ...............................................................7V 3 V Voltage .............................................................10V BIAS OUT ADJ Internal Operating Temperature 2 GND Range (Note 2) ....................................... 40C to 125C RUN/SS BANK 3 1 Maximum Solder Temperature ..............................260C Storage Temperature Range .................. 55C to 125C A B C D E F G H LGA PACKAGE 35-LEAD (11.25mm 6.25mm 2.82mm) T = 125C, = 36.9C/W, = 20.9C/W, WEIGHT = 0.49g JMAX JA JB = 41.74C/W, = 17.8C/W JC(TOP) JC(BOTTOM) Der in F Ma T PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE MSL TEMPERATURE RANGE TYPE RATING (Note 2) DEVICE FINISH CODE LTM8021EV PBF Au (RoHS) LTM8021V e4 LGA 3 40C to 125C LTM8021IV PBF Au (RoHS) LTM8021V e4 LGA 3 40C to 125C Consult Marketing for parts specified with wider operating temperature Recommended LGA and BGA PCB Assembly and Manufacturing ranges. *Device temperature grade is indicated by a label on the shipping Procedures: www.linear.com/umodule/pcbassembly container. Pad or ball finish code is per IPC/JEDEC J-STD-609. LGA and BGA Package and Tray Drawings: Terminal Finish Part Marking: www.linear.com/packaging www.linear.com/leadfree e Trical c T TThe l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25C, V = 10V, V = 10V, V = 3V, R = 31.6k. A IN RUN/SS BIAS ADJ SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Input DC Voltage V = 5V, R = Open 3 36 V IN RUN/SS ADJ V Output DC Voltage 0 < I < 500mA R Open 0.8 V OUT OUT ADJ 0 < I < 500mA R = 19.1k, 0.1% 5 V OUT ADJ R Minimum Allowable R Note 3 18 kW ADJ(MIN) ADJ I Leakage from IN to OUT RUN/SS = V = 0V, R Open 2.7 6 A LK BIAS ADJ I Continuous Output DC Current 5V V 36V, V = V 0 500 mA OUT IN BIAS OUT I Quiescent Current into V RUN/SS = 0.2V, V , R Open 0.1 1 A Q(VIN) IN BIAS ADJ Not Switching 1.5 2.5 mA I Quiescent Current into BIAS Not Switching 0.15 A Q(BIAS) V /V Line Regulation 5V V 36V, I = 500mA 0.5 % OUT OUT IN OUT R = Open ADJ V /V Load Regulation V = 24V, 0 I 500mA, V = V 0.35 % OUT OUT IN OUT BIAS OUT 8021fd 2 For more information www.linear.com/LTM8021 ics eris harac lec ion or or ion igura on ings bsolu