DC507A: Demo Board for the LT1937 White LED Step-Up Converter in SC70 and ThinSOT.

The LTC4124 is a simple high performance wireless Li-Ion charger with low battery disconnect. The pin-selectable charge current (up to 100mA) and charge voltage ensure versatility while minimizing the number of required external components.Wireless charging with the LTC4124 allows devices to be charged while sealed within enclosures and eliminates bulky connectors in space-constrained applications. Elimination of exposed conductive connectors also creates more robust devices while ensuring an effortless end-user experience.The LTC4124 includes an NTC input for safe temperature qualified charging and a battery disconnect feature that prevents damage to a battery due to over-discharging.The 2mm ? 2mm LQFN package and minimal number of external components make the LTC4124 well-suited for low power portable applications where small solution size is mandatory.Applications Medical Wireless Sensors Military Wearables High End Wireless Headsets Streaming Headsets with Bluetooth Connectivity Virtual Reality Headsets High End Remote Control IoT Devices

The ADM7172 is a CMOS, low dropout linear regulator (LDO) that operates from 2.3 V to 6.5 V and provides up to 2 A of output current. This high output current LDO is ideal for regulation of high performance analog and mixed-signal circuits operating from 6 V down to 1.2 V rails. Using an advanced proprietary architecture, the device provides high power supply rejection and low noise, and achieves excellent line and load transient response with just a small 4.7 ?F ceramic output capacitor. Load transient response is typically 1.5 ?s for a 1 mA to 1.5 A load step.The ADM7172 is available in 17 fixed output voltage options. The following voltages are available from stock: 1.3 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 4.2 V, and 5.0 V. Additional voltages that are available by special order are: 1.5 V, 1.85 V, 2.0 V, 2.2 V, 2.7 V, 2.75 V, 2.8 V, 2.85 V, 3.8 V, and 4.6 V. An adjustable version is also available that allows output voltages that range from 1.2 V to VIN ? VDO with an external feedback divider.Inrush current can be controlled by adjusting the start-up time via the soft start pin. The typical start-up time with a 1 nF soft start capacitor is 1.0 ms.The ADM7172 regulator output noise is 5 ?V rms, independent of the output voltage. The ADM7172 is available in an 8-lead, 3 mm ? 3 mm LFCSP, making it not only a very compact solution, but also providing excellent thermal performance for applications requiring up to 2 A of output current in a small, low profile footprint.Applications Regulation to noise sensitive applications: ADC and DAC circuits, precision amplifiers, PLLs/VCOs, and clocking ICs Communications and infrastructure Medical and healthcare Industrial and instrumentation

The LT1618 step-up DC/DC converter combines a traditional voltage feedback loop and a unique current feedback loop to operate as a constant-current, constant-voltage source. This fixed frequency, current mode switcher operates from a wide input voltage range of 1.6V to 18V, and the high switching frequency of 1.4MHz permits the use of tiny, low profile inductors and capacitors. The current sense voltage is set at 50mV and can be adjusted using the IADJ pin.Available in the 10-Pin (3mm x 3mm) Exposed Pad DFN and 10-pin MSOP packages, the LT1618 provides a complete solution for constant-current applications.Applications LED Backlight Drivers USB Powered Boost/SEPIC Converters Input Current Limited Boost/SEPIC Converters Battery Chargers

The LT6118 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and a latching comparator. The comparator latch functionality can be enabled or disabled and the comparator can be configured to reset upon power-on. The input and the open-drain output of the comparator are independent from the current sense amplifier. The comparator trip point and amplifier gain are configured with external resistors.The overall propagation delay of the LT6118 is typically only 1.4?s, allowing for quick reaction to overcurrent conditions. The 1MHz bandwidth allows the LT6118 to be used for error detection in critical applications such as motor control. The high threshold accuracy of the comparator, combined with the ability to latch the comparator, ensures the LT6118 can capture high speed events.The LT6118 is fully specified for operation from ?40?C to 125?C, making it suitable for industrial and automotive applications. The LT6118 is available in the small 8-lead MSOP and 8-lead DFN packages.Applications Overcurrent and Fault Detection Current Shunt Measurement Battery Monitoring Motor Control Automotive Monitoring and Control Industrial Control

The LTC3621/LTC3621-2 is a high efficiency 17V, 1A synchronous monolithic step-down regulator. The switching frequency is fixed to 1MHz or 2.25MHz with a ?40% synchronizing range. The regulator features ultralow quiescent current and high efficiencies over a wide VOUT range.The step-down regulator operates from an input voltage range of 2.7V to 17V and provides an adjustable output range from 0.6V to VIN while delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency; Burst Mode operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest voltage ripple. The MODE pin can also be used to allow the user to sync the switching frequency to an external clock. LTC3621 Options Part Name Frequency VOUT LTC3621 1.00MHz Adjustable LTC3621-3.3 1.00MHz 3.3V LTC3621-5 1.00MHz 5V LTC3621-2 2.25MHz Adjustable LTC3621-23.3 2.25MHz 3.3 LTC3621-25 2.25MHz 5V APPLICATIONS Portable-Handheld Scanners Industrial and Embedded Computing Automotive Applications Emergency Radio

The LT8714 is a synchronous PWM DC/DC controller designed for a four quadrant output converter. The output voltage cleanly transitions through zero volts with sourcing and sinking output current capability.The LT8714 is ideal for regulating to positive, negative, or zero volts when configured for the novel four quadrant topology. Applications include four quadrant power supplies, high power bidirectional current sources, active loads, and high power, low frequency signal amplification. In addition, the LT8714 incorporates a power good feature to let the user know if VOUT is above or below its target regulation voltage.The LT8714?s switching frequency range can be programmed between 100kHz and 750kHz via a resistor from the RT pin to GND. A SYNC pin is also provided if the user would like to synchronize the part to an external clock. Additional features such as current limiting and soft-start are included. The LT8714 is available in a 20?lead TSSOP package.Applications Four Quadrant Power Supplies Bidirectional Current Sources High Power, Low Frequency Signal Amplification Test and Measurement Electronic Window Tinting

The LTC2757 is an 18-bit multiplying parallel-input, current-output digital-to-analog converter that provides full 18-bit performance?INL and DNL of ?1LSB maximum?over temperature without any adjustments. 18-bit monotonicity is guaranteed in all performance grades. This SoftSpan? DAC operates from a single 3V to 5V supply and offers six output ranges (up to ?10V) that can be programmed through the parallel interface or pin-strapped for operation in a single range. In addition to its precision DC specifications, the LTC2757 also offers excellent AC specifications, including 2.1?s full-scale settling to 1LSB and 1.4nV?s glitch impulse. The LTC2757 uses a bidirectional input/output parallel interface that allows readback of any on-chip register, including DAC output-range settings; and a CLR pin and power-on reset circuit that each reset the DAC output to 0V regardless of output range.Applications Instrumentation Medical Devices Automatic Test Equipment Process Control and Industrial Automation

The LTC3649 is a high efficiency 60V, 4A synchronous monolithic step-down regulator. The regulator features a single resistor programmable output voltage, internal compensation and high efficiencies over a wide VOUT range.The step-down regulator operates from an input voltage range of 3.1V to 60V and provides an adjustable rail-to-rail output range from (VIN ? 0.5V) to ground while delivering up to 4A of output current. The switching frequency is also adjusted with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/SYNC pin can also be used to allow the user to synchronize the switching frequency to an external clock.The LTC3649 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection. It also features programmable output current limit, current monitoring and input voltage regulation.Applications Industrial Applications Automotive Applications

The LTC6430-15 is a differential gain block amplifier designed to drive high resolution, high speed ADCs with excellent linearity beyond 1000MHz and with low associated output noise. The LTC6430-15 operates from a single 5V power supply and consumes only 800mW.In its differential configuration, the LTC6430-15 can directly drive the differential inputs of an ADC. Using 1:2 baluns, the device makes an excellent 50? wideband balanced amplifier. While using 1:1.33 baluns, the device makes a high fidelity 50MHz to 1000MHz 75? CATV amplifier.The LTC6430-15 is designed for ease of use, requiring a minimum of support components. The device is internally matched to 100? differential source/load impedance. On-chip bias and temperature compensation ensure consistent performance over environmental changes.The LTC6430-15 uses a high performance SiGe BiCMOS process for excellent repeatability compared with similar GaAs amplifiers. All A-grade LTC6430-15 devices are tested and guaranteed for OIP3 at 240MHz. The LTC6430-15 is housed in a 4mm ? 4mm, 24-lead, QFN package with an exposed pad for thermal management and low inductance. For a single-ended 50? IF gain block with similar performance, see the related LTC6431-15.Applications Differential ADC Driver Differential IF Amplifier OFDM Signal Chain Amplifier 50? Balanced IF Amplifier 75? CATV Amplifier 700MHz to 800MHz LTE Amplifier