DC/DC CONTROLLER - Analog Devices

1 Visit CONTROLLER Selection GuideADI provides complete power solutions with a full lineup of power management products. This brochure shows an overview of our high performance DC/DC switching regulator controllers for applications including industrial, datacom, telecom, automotive, computing infrastructure, and consumer electronics. We make power design easier with our LTpowerCAD and LTspice simulation programs and our industry-leading field application engineering support. A broad selection of demonstration boards are available which includes layout and bill of material files, application notes and comprehensive technical documentation. 2 DC/DC CONTROLLER LTpowerCAD ..3 LTpowerCAD Power Supply Design ToolLTspice ..4 Benefits of Using LTspiceLTspice Demo CircuitsSingle Output Buck.

2 5 VIN Up to 22 V, Down to V .. 5 VIN Up to 38 V .. 6 VIN Up to 60 V .. 7 VIN Up to 150 V .. 8 Hybrid ..9 Multiphase Single Output Buck .. 10 Multiple Output Buck .. 11 Boost .. 12 Buck-Boost .. 13 Buck/Buck/Boost Ideal for Automotive Start-Stop Systems .. 14 LED Drivers .. 15 Bidirectional .. 16 SEPIC .. 18 Inverter ..19 Switching Surge Stoppers .. 20 Isolated Forward, Half-Bridge, Full-Bridge, and Push-Pull .. 21 Flyback .. 22 Multiple Topology ..23 DDR/QDR Memory Termination .. 24 MOSFET Drivers ..25 Digital Power System Management .. 26 LTpowerPlay .. 27 Contents Visit 3 LTpowerCADLT powerCAD is an easy-to-use power supply design tool with a user-friendly graphical user interface and power design features.

3 It supports many power products by Linear Technology, now part of Analog Devices Inc. Currently, most products in the LTpowerCAD tool are for nonisolated switching mode power supplies. The LTpowerCAD tool helps power supply designers select a solution for given supply specifications, design power stage components, estimate supply efficiency and power loss, and optimize supply loop stability and load transient performances. Once a circuit design is completed, it can be easily exported to the LTspice simulation platform. Within the LTpowerCAD program, there is also a LTpowerPlanner architecture tool for system-level power management design and optimization. The LTpowerCAD program is free download at website and runs on Microsoft Windows 7 or 10 based PC.

4 LTpowerCAD Power Supply Design ToolLTpowerPlanner Power Tree ExampleSearching a Part in LTpowerCADLT powerCAD: XPowerful and Easy-to-Use XDeveloped by Power Experts XBench Verified Models XFree Download: 4 DC/DC CONTROLLER LTspiceLTspice is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simula-tion of Analog circuits. Included in the download of LTspice are macromodels for a majority of Analog Devices switching regulators, amplifiers, as well as a library of Devices for general circuit of Using LTspiceOur enhancements to SPICE have made simulating switching regulators extremely fast compared to normal SPICE simulators, allowing the user to view waveforms for most switching regulators in just a few minutes.

5 Features XFree Download XStable SPICE Circuit Simulation Unlimited Nodes/Nets Schematic/Symbol Editor Waveform Viewer Library of Passive Devices XFast Simulation of Switching Mode Power Supplies (SMPS) Steady State Detection Turn On Transient Step Response Efficiency/Power Computations XAdvanced Analysis and Simulation OptionsDownload LTspiceDownload our LTspice simulation software for the following operating systems: Download for Windows 7, 8, and 10 Download for Mac OS X + Download for Windows XP (End of Support)LTspice Demo Circuits XLTspice provides macromodels for most of Analog Devices switching regulators, linear regulators, amplifiers, as well as a library of Devices for general circuit simulation. XSelected Analog Devices Devices also have demonstration circuits available for free download.

6 These demo circuits are designed to ensure proper performance and have been reviewed by Analog Devices factory applications group. XOver 1100 macromodels of ADI products X500+ SMPS Visit 5 LTC3852 Features XCharge Pump Input Range: V to V XController Input Range: 4 V to 38 V XIntegrated Charge Pump Provides 5 V Gate Drive to Logic Level MOSFETs XRSENSE or DCR Current Sensing X % Output Voltage Accuracy Over TemperatureSingle Output BuckADI s single output buck step-down DC/DC controllers provide up to 98 % efficient step-down conversion. Output voltages are from V with currents up to 60 amps. Features include synchronous or nonsynchronous operation, onboard MOSFET drivers, low quiescent current, tracking, tight reference voltage accuracy, optional sense resistor, current mode or voltage mode control and selectable or synchronizable operating frequency.

7 ADI offers several hundred buck controllers. The ones listed below are recommended for new designs. For a complete list visit Up to 22 V, Down to VPGO0DC+C RUNSHDNTRACK/SSITHMODE/PLLINFREQ/PLLFLTR VIN1 INTVCCTGSWINTVCCBGSENSE+SENSE kLTC385222 V TO V20 A3852 H100 pFCharge F1 F100 k470 F k1%20 k1% k+ONOFFPart NumberVIN Range (V)VOUT Range (V)IOUT1 Max (A)Operating Frequency2IQ (SUPPLY)PackageSynchronous RectificationNo RSENSET rackingSynchronizableSublogic Level MOSFETsPower Good SignalProgrammable Soft-StartCurrent (I) or Voltage (V) Mode to to VIN25250 kHz to 750 kHz7 mA3x5 QFN-20 to to VIN20300 mADFN-16 ILTC3830/LTC3830-13 to to VIN20100 kHz to 500 kHz700 AS8, SO-16, SSOP-16 VLTC3832/LTC3832-13 to to VIN20100 kHz to 500 kHz700 ASO-8, SSOP-16 VAutomotive Low Quiescent to to VIN20300 kHz/550 kHz/750 kHz105 ADFN-12, SSOP-16 to to VIN20300 kHz/550 kHz/750 kHz360 ADFN-10, MSOP-10 ILTC3772 to to VIN5550 kHz40 ADFN-8, ThinSOT ILTC3801 to to VIN5550 kHz16 AThinSOT to to VIN5250 kHz to 750 kHz105 ADFN-14, SSOP-16 ILTC3809 to to VIN5250 kHz to 750 kHz105 ADFN-10.

8 MSOP-10E I1 The maximum output current depends on the choice of external The operating frequency can be selected within the range Input Voltage Synchronous Step-Down Regulator 6 DC/DC CONTROLLER VIN Up to 38 VPart NumberVIN Range (V)VOUT Range (V)IOUT1 Max (A)Operating Frequency2IQ (SUPPLY)PackageSynchronous RectificationRemote VO SensingSub Millie OHM DCRT rackingSynchronizablePower Good SignalCurrent (I) or Voltage (V) Mode ControlFixed to V to V40250 kHz to 770 mA4x4 QFN-20/TSSOP-24 ILTC38674 to V to 14 V30200 kHz to mA4x4 QFN-24 to to kHz2 mA3x3 DFN/MSOP-12 ILTC3851A/LTC3851-14 to to kHz to 750 kHz1 mAQFN-16/SSOP-16 to to VIN25250 kHz to 1 mA3x3 QFN-12/MSOP-16E VConstant On-Time (Fast Transient)

9 To to kHz to 2 MHz2 mA3x4 QFN-20/TSSOP-20 ILTC37704 to to VIN25 Constant mA5x5 QFN-32/SSOP-28 ILTC38784 to to VIN25 Constant mASSOP-16 ILTC38794 to to VIN25 Constant mA3x3 QFN-12/MSOP-16E IAutomotive Low Quiescent to to 3625100 kHz to 3 MHz8 A3x3 QFN-16/MSOP-16E Releasing in 2019 LTC38074 to to 242575 kHz to 900 kHz50 A3x4 QFN-20/TSSOP-20 ILTC3835/LTC3835-14 to to 1025140 kHz to 650 kHz80 AFE20, 4x5 QFN, GN, 3x5 QFN ILTC3834/LTC3834-14 to to 1025140 kHz to 650 kHz30 AFE20, 4x5 QFN, GN, 3x5 QFN I1 The maximum output current depends on the choice of external The operating frequency can be selected within the range Features: All parts have peak or valley current mode control and a shut-down (run) Features XSub-Milliohm DCR Current Sensing XHigh Efficiency.

10 Up to 95 % XSelectable Current Sensing Limit XPeak Current Mode Control XProgrammable DCR Temperature Compensation XRemote VOUT Sensing X % V Output Voltage Accuracy XProgrammable Fixed Frequency 250 kHz to 770 kHzFREQMODE/PLLINRUNPGOODTK/SSITEMPITHEX TVCCVFBVINDIFFOUTINTVCCDIFFPBOOSTDIFFNTG SNSD+SWSNS BG3866 V30 V to 20 VSNSA+PGNDILIMCLKOUTLTC3866 SGNDD emonstration BoardSingle Output BuckHigh Efficiency, V/30 A Step-Down Converter with Very Low DCR Sensing 6 DC/DC CONTROLLER Visit 7 Part NumberVIN Range (V)VOUT Range (V)IOUT1 Max (A)Operating Frequency2IQ (SUPPLY)PackageSynchronous RectificationNo RSENSET rackingSynchronizableShut-DownPower Good SignalAdjustable Turn-On VoltageCurrent (I) or Voltage (V) Mode to to VIN10100 kHz to 600 mASSOP-16, TSSOP-28 to to VIN20100 kHz to 1 MHz3 mATSSOP-16E to to VIN20100 kHz to 1 MHz3 mAQFN-32 ILTC3810 to to VIN20100 kHz to 1 MHz3 mASSOP-28 to to VIN10100 kHz to 600 mASSOP-16, TSSOP-28 VAutomotive Low Quiescent CurrentLTC78004 to to 2425320 kHz to MHz50 A3x4 QFN-20 ILTC38914 to to 242050 kHz to 900 kHz50 A3x4 QFN-20, TSSOP-20E ILT3845A4 to to 3620100 kHz to 500 kHz120 ATSSOP-16E to to VIN550 kHz to 850 kHz40 A3x4 QFN-12.