The LTC7806 is a high performance 2-phase single output synchronous boost converter controller that drives two N-channel power MOSFET stages out-of-phase. Its constant-frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. High frequency 2-phase operation reduces input and output capacitor requirements and allows the use of smaller inductors compared to the single-phase equivalent. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements, simplifying high power boost applications. The synchronous PassThru capability also minimizes losses in automotive start-stop applications.The LTC7806 operates from a wide 4.5V to 40V input supply range. When biased from the boost converter output, the LTC7806 can operate from an input supply as low as 1V after start-up. The very low no-load quiescent current extends operating run time in battery powered systems. OPTI-LOOP? compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC7806 features a precision 1.2V reference, a power good output indicator, and an inductor current monitor.APPLICATIONS Automotive and Transportation Audio and RF Power Amplifiers Industrial and Medical Communications

The LTC3376 is a highly flexible multioutput power supply IC. The device includes four synchronous buck converters, configured to share eight 1.5A power stages, powered from independent 3V to 20V inputs. The DC/DCs are assigned to one of fifteen power configurations via pin strappable CFG0 to CFG3 pins. The LTC3376 includes the integration of ceramic capacitors into the package for the BST pins thereby saving PCB space. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock. The operating mode for all DC/DCs may be programmed via the SYNC/MODE pin for Burst Mode or forced continuous mode operation. The PGOOD1 to PGOOD4 outputs indicate when each enabled DC/DC is within a specified percentage of its final output. Current monitors allow for external monitoring of each buck?s load. The EXTVCC pin allows for the internal circuitry to run from a 3V to 5.5V rail for improved efficiency. Precision RUN pin thresholds facilitate power-up sequencing. The LTC3376 is available in a 64 lead 7mm ? 7mm BGA (0.8mm ball pitch).Applications? Telecom/Industrial? 12V Distributed Power Systems

The LTC4372/LTC4373 are positive high voltage ideal diode controllers that drive an external N-channel MOSFET to replace a Schottky diode. They control the forward voltage drop across the MOSFET to ensure current delivery or current transfer from one path to the other even at light loads.A 5?A operating current achieves high efficiency for intermittent load applications or always-on backup power supplies. If a power source fails or is shorted, a fast turn-off minimizes reverse current transients. The LTC4372/LTC4373 control back-to-back N-channel MOSFETs for inrush current control and load switching.The LTC4372?s SHDN pin keeps the MOSFET off and reduces the quiescent current to 3.5?A. The LTC4373 has a UV pin for undervoltage monitoring while the UVOUT?pin provides hysteresis adjustment and status information. During undervoltage, the back-to-back MOSFETs are cut off and quiescent current reduces to 0.5?A.APPLICATIONS Automotive Battery Protection Redundant Power Supplies Portable Instrumentation Solar Powered Systems Energy Harvesting Applications Supply Holdup

Demonstration circuit 2973A shows the LTC3337 Primary Battery State of Health (SOH) monitor with precision coulomb counter operating with a configurable peak current limit. The LTC3337 supports input voltages from 1.8V to 5.5V and a peak current up to 100mA with a quiescent current of 100nA. Coulomb count, battery voltage, and Battery Series Resistance (BSR) are measurable and can be used to quantify the charge state and health of a battery. The DC2973A demonstrates a simple layout for the highest-power configuration of the LTC3337. The circuit can be reduced for lower IPEAK levels. The demo board can be connected directly to a PC using a micro USB cable in order to run a GUI and configure simple a Battery State of Charge (SOC) monitor. Source code for the GUI is available and can be used as a starting point for LTC3337 firmware development.

DC2985A is a multi-output power management solution demonstration circuit, featuring the LT3380. It contains two 2.5A, two 1.5A synchronous step-down DC/DC regulators and three 300mA LDO regulators. All regulators can be enabled with external enable pins. After the first regulator is enabled, the remaining enable pins use a precision threshold to allow hardwire-programmed Power-Up Sequence. A micro-USB communication interface is integrated on board to allow software GUI to write or read the registers in LT3380 via its I2C serial port. This GUI can control regulator enables, power-down sequencing, output voltage levels, dynamic voltage scaling, operation modes, status reporting and other special functions. Refer to LT3380 data sheet for more details on the electrical specifications and the setting of its command registers.

The LT8386 is a monolithic, synchronous, step-up DC-to-DC converter that utilizes fixed frequency, peak current control and provides PWM dimming for a string of LEDs. The LED current is programmed by an analog voltage or digital pulses at the CTRL pin. The LT8386 will maintain 2% current regulation through an external sense resistor over a wide range of output voltages.The LT8386 features Silent Switcher? technology designed to minimize EMI/EMC emissions with high efficiency. The switching frequency is programmable from 200kHz to 2MHz by an external resistor at the RT pin or by an external clock applied at the SYNC/SPRD pin. With the optional spread spectrum frequency modulation enabled, the frequency varies from 100% to 125% to reduce EMI.The LT8386 includes a driver for an external high side PMOS for PWM dimming. The 60V rated LT8386 is pin-to-pin compatible with the LT3922 and LT3922-1.APPLICATIONS Automotive and Industrial Lighting Heads Up Display (HUD)/Machine Vision

Demonstration circuit 3036A features the LTC6812-1, a 15-channel battery-stack monitor. Multiple boards can be linked through a 2-wire isolated serial interface (isoSPI™) to monitor a long series of cells in a stack. The DC3036A demo board also features reversible isoSPI enabling a redundant communication path. The PCB, components, and DuraClik connectors are optimized for Low EMI Susceptibility and Emissions. The DC3036A can communicate to a PC by connecting a DC2792B dual master isoSPI together with DC2026 Linduino® One. The DC2026 must be loaded with the appropriate program (called a sketch) to control the battery stack monitor IC and receive data through a USB serial port. The DC2026C provides a standard SPI inter-face which can be translated to isoSPI and then connected to a DC3036A isoSPI port (J4 or J5 connector). The DC2792B companion board provides two SPI-isoSPI channels for reversible operation.

Demonstration circuit 3064A features PolyPhase® design using the LTM4650AEY-1, the high efficiency, high density, dual 25A, switch mode step-down power μModule® regulator. The input voltage is from 4.5V to 16V. The output voltage is jumper selectable from 1.0V to 5.1V. DC3064A can deliver nominal 200A output current. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The LTM4650A-1 on DC3064A always operates in continuous conduction mode. The switching frequency can be programmed through a resistor or can be synchronized to an external clock signal. The board allows the user to program how its output voltage ramps up and down through the TRACK pin. The output voltage is tightly regulated between "VO+" and "VO–" through remote output voltage sensing which improves output voltage regulation at heavy loads. These features and the availability of the LTM4650AEY-1 in a compact 16mm × 16mm × 5.01mm BGA package make it ideal for use in many high density point-of-load regulation applications. The LTM4650A-1 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC3064A.

DC306A-A Demo Board for: LT1361 Dual and Quad 50MHz, 800V/µs Op Amps LT1795 Dual 500mA/50MHz Current Feedback Line Driver Amplifier

DC308A: Demo Board for LTC3401 1A, 3MHz Micropower Synchronous Boost Converter.

Demonstration circuit DC3103A is a monolithic 4-Switch buck-boost voltage regulator featuring the LT3942. It has been designed with an output voltage set to 12V with capability of delivering up to 1A when the input voltage is between 7V and 36V. The demonstration circuit continues operating with an input voltage as low as 3V with reduced output power capability. DC3103A is configured for 2MHz switching frequency with spread spectrum frequency modulation (SSFM) disabled. When enabled, SSFM adjusts the switching frequency of the LT3942 between 2MHz and 2.5MHz for improved EMI performance. The LT3942 has an operating input voltage range of 3V to 36V. It has internal, synchronous 40V switches for high efficiency and small size. It has an adjustable switching frequency between 300kHz and 2MHz. The LT3942 can by synchronized to an external oscillator source, programmed with SSFM enabled for low EMI, or set to normal operation. The board is designed with ceramic capacitors placed near the PVIN and PVOUT pins to form a compact high frequency hotloop. SMD pads are available to install an optional ferrite bead EMI filter on both the input and output of DC3103A. Small cuts on the top layer copper between the SMD pads of both ferrite bead components are necessary to install the EMI filter correctly. These filters, combined with proper board layout and SSFM, are effective in reducing both radiated and conducted EMI. Please follow the recommended layout and four-layer PCB thickness of DC3103A for low EMI applications. DC3103A uses the LT3942’s voltage regulation loop to program a constant-voltage output of 12V. The LT3942 can operate as a constant voltage regulator as well as a constant current regulator. For LED driver designs, please refer to demonstration circuit DC2404A. DC2404A includes a high-side PMOS disconnect switch to assist with PWM dimming, as well as several other optimizations for LED driver applications. The LT3942 data sheet gives a complete description of the part, operation, and applications information. The data sheet must be read in conjunction with the User Guide for DC3103A. The LT3942EUFD is assembled in a 28-lead plastic QFN (UFD) package with a thermally-enhanced exposed ground pad. Proper board layout is essential for maximum thermal and low-noise performance. Refer to DC3103A’s design files files for recommended layout and routing of the LT3942 for voltage regulator applications.

Demonstration Circuit DC3123A features the LTC3315A dual 5V, 2A Synchronous Step-Down DC/DC regulators operating at 2MHz. One regulator provides a 1.2V output and the other provides 1.8V, both up to a 2A load. The LTC3315A supports adjustable output voltages from 0.5V to VIN, operating frequencies from 1MHz up to 3MHz. The LTC3315A is a compact, high efficiency, and high speed synchronous monolithic step-down switching regulator. Fast minimum on-time of 25ns enables high VIN to low VOUT conversion at high frequency. The DC3123A operating mode may be selected as Burst Mode operation, Skip mode or Forced Continuous (FC) mode. Setting JP1 to the FC/SYNC position will allow the LTC3315A to sync to a clock frequency from 1MHz to 3MHz. The LTC3315A operates in Forced Continuous mode when syncing to an external clock. The LTC3315A data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with the demo manual. The LTC3315A is assembled in a 1.6mm × 1.6mm WLCSP package. The Efficiency vs Load graph shows the efficiency and the power loss of the circuit with a 3.3V input in Burst Mode operation.

The LT8627SP synchronous step-down regulator features third-generation Silent Switcher technology which is uniquely designed to combine an ultralow noise reference with Silent Switcher architecture in order to achieve both high efficiency and excellent wideband noise performance.The innovative ultralow noise architecture provides exceptional low frequency (0.1Hz?100kHz) output noise performance in a switching regulator, independent of output voltage. Silent Switcher architecture minimizes EMI emissions while delivering high efficiency at high switching frequencies.?The LT8627SP is ideal for high current, noise sensitive applications which benefit from the high efficiency of a synchronous switching regulator.APPLICATIONS RF Power Suppliers: PLLs, VCOs, Mixers, LNAs, PAs High Speed/High Precision ADCs/DACs Low Noise Instrumentation

DC323A-A: Demo Board for LTC1751 Micropower, Regulated Charge Pump DC/DC Converters.

DC332A: Demo Board for LTC1682 Doubler Charge Pumps with Low Noise Linear Regulator.

DC333A-B: Demo Board for the LT5502 400MHz Quadrature IF Demodulator with RSSI.

DC342A-B: Demo Board for the LTC1911 Low Noise, High Efficiency, Inductorless Step-Down DC/DC Converter.

The LTC1878 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 10?A and drops to

DC352A Demo Board for: LTC1629 PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator LTC1628-SYNC High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator

The LT1763 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 500mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 30?A quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. A key feature of the LT1763 regulators is low output noise. With the addition of an external 0.01?F bypass capacitor, output noise drops to 20?VRMS over a 10Hz to 100kHz bandwidth. The LT1763 regulators are stable with output capacitors as low as 3.3?F. Small ceramic capacitors can be used without the series resistance required by other regulators. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The parts come in fixed output voltages of 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1763 regulators are available in 8-lead SO and 12-lead, low profile (4mm ? 3mm ? 0.75mm) DFN packages.Applications Cellular Phones Battery-Powered Systems Noise-Sensitive Instrumentation Systems