Demonstration circuit 2416A features the LTM8003, a 40V, 3.5A step-down μModule® Regulator. This demo circuit is configured to deliver a 5.0V output from an input voltage between 6.0V to 40V at a switching frequency of 2MHz. The wide input range of the LTM8003 allows a variety of input sources such as automotive batteries and industrial supplies. Under light load conditions, the available Burst Mode® operation supports high efficiency with low output ripple.

The LTC4367 protects applications where power supply input voltages may be too high, too low or even negative. It does this by controlling the gate voltages of a pair of external N-channel MOSFETs to ensure that the output stays within a safe operating range.The LTC4367 withstands voltages between ?40V and 100V and has an operating range of 2.5V to 60V, while consuming only 70?A in normal operation.Two comparator inputs allow configuration of the overvoltage (OV) and undervoltage (UV) set points using an external resistive divider. A shutdown pin provides external control for enabling and disabling the MOSFETs as well as placing the device in a low current shutdown state. A fault output indicates that the GATE pin is pulling low when the part is in shutdown or the input voltage is outside the UV and OV set points.The LTC4367 has a 32ms turn-on delay that debounces live connections and blocks 50Hz to 60Hz AC power. For fast recovery after faults, the LTC4367-1 has a reduced turn-on delay of 500?s.Applications Portable InstrumentationIndustrial AutomationAutomotive Surge (Load Dump) ProtectionNetwork Equipment

Demonstration circuit 2419A features the LTC3372 in a multi-output step-down converter. The controller portion of the LTC3372 drives a high output voltage (HV) buck converter which has an input voltage range of 6V to 60V. Its output voltage (VOUT_HV) is nominally 5V but can be configured for either 5V or 3.3V with the VOUTPRG pin. VOUT_HV supplies power to the configurable buck regulator. This regulator provides four low voltage (LV) outputs labelled VOUT1-4. These outputs are 1.2V/2A, 1.8V/2A, 2.5V/2A and 3.3V/2A respectively. When VOUT_HV is configured for 5V, it can supply 6A to the external loads with full load on VOUT1-4. With no load on VOUT1-4, VOUT_HV can supply 10A to the external loads. The LV buck regulator consists of eight power stages that can be arranged in up to four channels. The LV regulator on the DC2419A is setup for four channels of two power stages each. With modifications, the LV buck regulator can be setup for eight different configurations. If VOUT_HV is programmed for 3.3V, then VOUT4 which provides 3.3V/2A will be in dropout. This rail will require an external input voltage to stay in regulation. The LV rails operate at 2MHz and the HV converter operates at one-sixth this frequency or 333kHz. The high frequency of the LV rails allows the use of 4mm × 4mm inductors. The power stage for the HV converter consists of 60V avalanche rated MOSFETs and a 2.2μH 10mm × 10mm inductor. A 4mΩ discrete sense resistor is used to sense current. The low IQ current of the LTC3372 provides high efficiency at light loads. When the VOUT_HV is supplying the nominal 5V, its Burst Mode® efficiency with 1mA load is 90.3% for a 12V input. When the HV converter is off, it only draws 27μA from a 12V input. The LTC3372 data sheet provides a complete description of the IC operation and application information. The data sheet must be read in conjunction with the quick start guide.

The LTC3864 is a robust, high voltage step-down DC/DC controller optimized for automotive and industrial applications. It drives a P-channel power MOSFET switch allowing 100% duty cycle operation. The wide input and output voltage ranges cover a multitude of applications. This device has been verified with the failure mode and effects analysis (FMEA) procedure for operation during failure conditions.The LTC3864 offers excellent light load efficiency, drawing only 40?A quiescent current in a user programmable Burst Mode operation. Its peak current mode, constant frequency PWM architecture provides for good control of switching frequency and output current limit. The switching frequency can be programmed from 50kHz to 850kHz with an external resistor and can be synchronized to an external clock from 75kHz to 750kHz.The LTC3864 offers programmable soft-start or output tracking. Safety features include overvoltage protection, overcurrent and short-circuit protection including frequency foldback and a power good output signal.The LTC3864 is available in thermally enhanced 12-Pin MSOP and 3mm ? 4mm DFN packages.Applications Industrial and Automotive Power Supplies Telecom Power Supplies Distributed Power Systems

Demonstration circuit DC2448A-D features a PolyPhase® design using the LTM4636-1EY, a 40A high efficiency, switch mode step-down power µModule® regulator with overvoltage and overtemperature protection features. The input voltage range is from 9V to 15V. The output voltage range is 0.6V to 3.3V. The DC2448A-D can deliver a nominal 160A output current. DC2448A-D has on-boardhot swap circuit that can disconnect input supply and protect the LTM4636-1 and the load under overvoltage and overtemperature conditions. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulse-skipping mode for noise sensitive applications or Burst Mode® operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4636-1 to synchronize to an external clock signal. DC2448A-D has the option of choosing both internal and external compensation circuits for LTM4636-1. The LTM4636-1 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2448A-D.

The LT8335 is a current mode DC/DC converter capable of generating either positive or negative output voltages using a single feedback pin. It can be configured as a boost, SEPIC or inverting converter consuming as low as 6?A of quiescent current. Low ripple Burst Mode operation maintains high efficiency down to very low output currents while keeping the output ripple below 15mV in a typical application. The internally compensated current mode architecture results in stable operation over a wide range of input and output voltages. Integrated soft-start and frequency foldback functions are included to control inductor current during start-up. The 2MHz operation combined with the small 8-lead DFN package, enables low cost, area efficient solutions.Applications Industrial and Automotive Telecom Medical Diagnostic Equipment Portable Electronics

The LTM4650-1A/LTM4650-1B is dual 25A or single 50A output step-down ?Module? (power module) regulator with ?0.8% (LTM4650-1A) and ?1.5% (LTM4650-1B) total DC output error with ?3% transient output error. Included in the package are the switching controller, power FETs, inductors, and all supporting components. External compensation allows for fast transient response to minimize output capacitance when powering FPGAs, ASICs, and processors. With synchronized multiphase parallel current sharing, six LTM4650-1 devices can deliver up to 300A. The LTM4650-1 is offered in a 16mm ? 16mm ? 5.01 BGA package, with SnPb (BGA) or RoHS compliant terminal finish. VIN Range VOUT Range Comp DC VOUT Accy LTM4650 4.5V to 15V 0.6V to 1.8V Internal 1.5% LTM4650-1B 4.5V to 15V 0.6V to 1.8V External 1.5% LTM4650-1A 4.5V to 15V 0.6V to 1.8V External 0.8% LTM4650A 4.5V to 16V 0.6V to 5.5V Internal 1% LTM4650A-1 4.5V to 16V 0.6V to 5.5V External 1% Applications FPGA, ASIC, ?Processor Core Voltage Regulation Information, Communication Systems

The LTM4650-1A/LTM4650-1B is dual 25A or single 50A output step-down ?Module? (power module) regulator with ?0.8% (LTM4650-1A) and ?1.5% (LTM4650-1B) total DC output error with ?3% transient output error. Included in the package are the switching controller, power FETs, inductors, and all supporting components. External compensation allows for fast transient response to minimize output capacitance when powering FPGAs, ASICs, and processors. With synchronized multiphase parallel current sharing, six LTM4650-1 devices can deliver up to 300A. The LTM4650-1 is offered in a 16mm ? 16mm ? 5.01 BGA package, with SnPb (BGA) or RoHS compliant terminal finish. VIN Range VOUT Range Comp DC VOUT Accy LTM4650 4.5V to 15V 0.6V to 1.8V Internal 1.5% LTM4650-1B 4.5V to 15V 0.6V to 1.8V External 1.5% LTM4650-1A 4.5V to 15V 0.6V to 1.8V External 0.8% LTM4650A 4.5V to 16V 0.6V to 5.5V Internal 1% LTM4650A-1 4.5V to 16V 0.6V to 5.5V External 1% Applications FPGA, ASIC, ?Processor Core Voltage Regulation Information, Communication Systems

The LTC3779 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phaselockable frequency of up to 600kHz, while an input/output constant current loop provides support for battery charging.?With a wide 4.5V to 150V input and output range and seamless transfers between operating regions, the LTC3779 is ideal for automotive, telecom and batterypowered systems.?The LTC3779 features a precision 1.2V reference and power good output indicator. The MODE pin can select between pulse-skipping mode or forced continuous mode of operation. Pulse-skipping mode offers high efficiency at light load while forced continuous mode operates at a constant frequency for noise sensitive applications. The PLLIN pin allows the IC to be synchronized to an external clock. The SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.Applications Industrial, Automotive, Medical, Military, Avionics

The LT8390 is a synchronous 4-switch buck-boost DC/DC controller that regulates output voltage, input or output current from an input voltage above, below, or equal to the output voltage. The proprietary peak-buck/peak-boost current mode control scheme allows adjustable and synchronizable 150kHz to 650kHz fixed frequency operation, or internal ?15% triangle spread spectrum frequency modulation for low EMI. With a 4V to 60V input voltage range, 0V to 60V output voltage capability, and seamless low-noise transitions between operation regions, the LT8390 is ideal for voltage regulator, battery and supercapacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.The LT8390 provides input or output current monitor and power good flag. Fault protection is also provided to detect output short-circuit condition, during which the LT8390 retries, latches off, or keeps running. Max Switching Frequency ? Max Output Power LT8390 650kHz 450W+ LT8390A 2MHz 50W+ APPLICATIONS Automotive, Industrial, Telecom Systems High Power Battery-Powered System