The LT6557 is a high speed triple video ampli?er with an internal ?xed gain of 2 and a programmable DC input bias voltage. This ampli?er features a 400MHz 2VP-P signal bandwidth, 2200V/?s slew rate and a unique ability to drive heavy output loads to 0.8V of the supply rails, making the LT6557 ideal for a single 5V supply, wideband video application. With just one resistor, the inputs of all three ampli?ers can be programmed to a common voltage level, simplifying and reducing the need for external circuitry in the AC-coupled applications. Without the programmable resistor, the input bias circuit becomes inactive, allowing the use of an external clamp circuit or direct coupled input.The LT6557 has separate power supply and ground pins for each ampli?er to improve channel separation and to ease power supply bypassing. The LT6557 provides uncompromised performance in many high speed applications where a low voltage, single supply is required.The LT6557 is available in 16-lead SSOP and 5mm ? 3mm DFN packages.Applications LCD Video Projectors RGB HD Video Ampli?ers Coaxial Cable Drivers Low Supply ADC Drivers

Demonstration circuit 1021A is a high efficiency synchronous step-down DC/DC converter with 4.5V to 16V input range. It can provide 2.5V output with 10A maximum current. The demo board features the LTC3823EUH controller.

The LT3513 5-output adjustable switching regulator provides power for large TFT-LCD panels. The 38-pin 5mm ? 7mm QFN device can generate a 3.3V or 5V logic supply along with the triple output supply required for the TFT-LCD panel. A lower voltage secondary logic supply may also be generated with the addition of an external NPN driven by the internal linear regulator. A step-down regulator provides a low voltage output, VLOGIC, with up to 1.2A of current while capable of operating from a wide input range of 4.5V to 30V. A high power step-up converter, a lower power step-up converter and an inverting converter provide the three independent output voltages: AVDD, VON and VOFF required by the LCD panel. A high-side PNP provides delayed turn-on of the VON signal and can handle up to 30mA. Protection circuitry ensures that VON is disabled if any of the four outputs are more than 10% below the programmed voltage.Applications Automotive TFT-LCD Displays Large TFT-LCD Desktop Monitors Flat Panel Televisions

The LTC3812-5 is a synchronous step-down switching regulator controller that can directly step down voltages from up to 60V input, making it ideal for telecom and automotive applications. The LTC3812-5 uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit without requiring a sense resistor.A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifier provides very fast line and load transient response. Large 1? gate drivers allow the LTC3812-5 to drive large power MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN. A shutdown pin allows the LTC3812-5 to be turned off reducing the supply current to <230?A.Integrated bias control generates gate drive power from the input supply during start-up and when an output short-circuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher efficiency. Features Adj UVLO, Sync & Tracking Package LTC3810 Vin 6.2V to 100V, 10V Driver Voltage Yes SSOP-28 LTC3810-5 Vin 4.35V to 60V, 5.5V Driver Voltage Yes QFN-32 LTC3812-5 Vin 4.35 to 60V, 5.5V Driver Voltage No TSSOP-16E Applications? 48V Telecom and Base Station Power Supplies Networking Equipment, Servers Automotive and Industrial Control Systems

Demonstration circuit 1038A-B is a 35W isolated flyback converter with synchronous rectification and primary-side regulation featuring the LT3837. This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using the part in a flyback power supply. It operates at 200kHz and produces a regulated 5V, 7A output from an input voltage range of 9V to 36V. Isolation voltage is 1500VDC.

The LTC3544 is a quad, high efficiency, monolithic synchronous buck regulator using a constant-frequency, current mode architecture. The four regulators operate independently with separate run pins. The 2.25V to 5.5V input voltage range makes the LTC3544 well suited for single Li-Ion/polymer battery-powered applications. 100% duty cycle provides low dropout operation, extending battery runtime in portable systems. Low ripple Burst Mode? operation increases efficiency at light loads, further extending battery runtime with typically only 20mV of ripple.Switching frequency is internally set to 2.25MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes. Low output voltages are easily supported with the 0.8V feedback reference voltage.The LTC3544 is available in a low profile (0.75mm) (3mm ? 3mm) QFN package. Light Load Operation LTC3544 Burst Mode (20mVP-P), <70?a IQ LTC3544B Pulse Skip Mode Applications Cellular Telephones Personal Information Appliances Wireless and DSL Modems Digital Still Cameras Media Players Portable Instruments

DC1040A-B: Demo Board for the LTC3544B Quad Synchronous Step-Down Regulator, 2.25MHz, 300mA, 200mA, 200mA and 100mA.

Demonstration circuit DC1084A-B features the LTM4602HV, the high efficiency, high density step-down μModule® regulator. The input voltage range is from 4.5V to 28V. The output voltage is jumper programmable from 0.6V to 5V, refer to the step-down ratio curve in the LTM4602HV data sheet. The rated load current is 6A, while derating is necessary for certain VIN, VOUT and thermal conditions.

Demonstration circuit DC1095 is a micropower synchronous buck-boost converter based on the LTC3538 monolithic buck-boost regulator. The DC1095 has an input voltage range of 2.4V to 5.5V and an output of 3.3V @ 800mA.

Demonstration circuit DC2886A is a high power, high efficiency six-phase bidirectional converter featuring the LTC7871 and LTC7060. The terminals labeled VHIGH and VLOW are either inputs or outputs depending on the direction of power flow. When the switch at SW1 is in the BUCK position, VLOW provides a 14V output and VHIGH is the input with a range of 30V to 70V. When the switch is in the BOOST position, VHIGH provides a 48V output and VLOW is the input with a range of 10V to 14V. The maximum VLOW current is 180A in both directions. The maximum output power is 2.5kW when operating as a buck within the input voltage range. When operating as a boost, the maximum output power is 2.4kW when the input voltage is 14V. External airflow is required when operating at maximum power. The MOSFETs in each phase are driven by the LTC7060 half bridge driver. Each LTC7060 gate driver is placed next to the MOSFETs and receives a PWM signal from the LTC7871. The inductor current for each phase is sensed with a low 1mΩ sense resistor using a highly accurate AC/DC current sensing architecture with low power dissipation. The LTC7871’s constant-current loop provides a DC current limit for the current flowing in or out of the VLOW terminal depending on the state of the BUCK pin. This current can be programmed with the SETCUR pin and monitored with the IMON pin. The DC2886A provides a SPI compatible serial port. With a DC2026C (Linduino® One) demo board and QuikEval™ software on a host computer, the user can: Margin the regulated VLOW or VHIGH up or down. Margin the DC current limit up or down with the SETCUR pin. Adjust the frequency spread and modulation rate of the spread spectrum circuit, when spread spectrum is enabled. Monitor the operational status and faults of the LTC7871. Additional features of the DC2886A include: Pin selectable light load operating modes Buck: FCM, pulse-skipping and Burst Mode® Operation Boost: FCM and pulse-skipping SYNC and CLKOUT pins Optional jumper to enable spread spectrum modulation RUN, FAULT, PGOOD and PWNEN pins BUCK pin to externally control the direction of power flow Footprint for an optional heatsink