The LTC4221 is a 2-channel Hot Swap? controller that allows a board to be safely inserted and removed from a live backplane. Using two independent high side gate drivers to control two external N-channel pass transistors, the output voltages can be ramped up with current foldback to limit the inrush current during the start-up period. No external compensation capacitors are required at the GATE pins. The two channels can be configured to ramp up and down separately or simultaneously for supply voltages ranging from 2.7V to 13.5V and 1V to 13.5V for channels 1 and 2 respectively.Each channel has two current limit comparators that provide dual level and dual speed overcurrent circuit breaker protection after the start-up period. If any current sense voltage exceeds 100mV for 1?s or 25mV for the timeout delay (set by the CFILTER at the FILTER pin), then the FAULT latch is set and both GATE pins are pulled low.The FB pins monitor the respective channel output voltages and provide the inputs for the PWRGD comparators as well as overvoltage protection.Applications Electronic Circuit Breaker Power Supply Sequencing Live Board Insertion and Removal Industrial High Side Switch/Circuit Breaker

DC1370A-B: Demo Board for the LTC2260-14 14-Bit, 105Msps Ultra-Low Power 1.8V ADCs

DC1370A-G: Demo Board for the LTC2261-12 12-Bit, 125Msps Ultralow Power 1.8V ADCs

The LTC2258-12/LTC2257-12/LTC2256-12 are sampling 12-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. They are perfect for demanding communications applications with AC performance that includes 71.1dB SNR and 88dB spurious free dynamic range (SFDR). Ultralow jitter of 0.17psRMS allows undersampling of IF frequencies with excellent noise performance.DC specs include ?0.3LSB INL (typical), ?0.1LSB DNL (typical) and no missing codes over temperature. The transition noise is a low 0.3LSBRMS.The digital outputs can be either full rate CMOS, double data rate CMOS, or double data rate LVDS. A separate output power supply allows the CMOS output swing to range from 1.2V to 1.8V.The ENC+ and ENC? inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles. Bits LTC2256-12 12 LTC2256-14 14 Applications Communications Cellular Base Stations Software Defined Radios Portable Medical Imaging Multi-Channel Data Acquisition Nondestructive Testing

The LTM4616 is a complete dual 2-phase 8A per channel switch mode DC/DC power regulator system in a 15mm ? 15mm surface mount LGA or BGA package. Included in the package are the switching controller, power FETs, inductor and all support components. Operating from an input voltage range of 2.7V to 5.5V, the LTM4616 supports two outputs within a voltage range of 0.6V to 5V, each set by a single external resistor. This high efficiency design delivers up to 8A continuous current (10A peak) for each output. Only bulk input and output capacitors are needed, depending on ripple requirement. The part can also be configured for a 2-phase single output at up to 16A.The low profile package enables utilization of unused space on the back side of PC boards for high density point-ofload regulation.Fault protection features include overvoltage protection, overcurrent protection and thermal shutdown. The power module is offered in space saving and thermally enhanced 15mm ? 15mm ? 2.82mm LGA and 15mm ? 15mm ? 3.42mm BGA packages. The LTM4616 is available with SnPb (BGA) or RoHS compliant terminal finish.Applications Telecom, Networking and Industrial Equipment Storage and ATCA, PCI Express Cards Battery Operated Equipment

The LTM8032 is an electromagnetic compatible (EMC) 36V, 2A DC/DC step-down ?Module? (power module) regulator designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, filters and all support components. Operating over an input voltage range of 3.6V to 36V, the LTM8032 supports an output voltage range of 0.8V to 10V, and a switching frequency range of 200kHz to 2.4MHz, each set by a single resistor. Only the bulk input and output filter capacitors are needed to finish the design. The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation.The LTM8032 is packaged in a thermally enhanced, compact and low profile overmolded land grid array (LGA) and ball grid array (BGA) packages suitable for automated assembly by standard surface mount equipment. The LTM8032 is available with SnPb (BGA) or RoHS compliant terminal finish.Applications Automotive Battery Regulation Power for Portable Products Distributed Supply Regulation Industrial Supplies Wall Transformer Regulation

The LTC2656 is a family of octal 16-/12-bit rail-to-rail DACs with a precision integrated reference. The DACs have built-in high performance, rail-to-rail, output buffers and are guaranteed monotonic.The LTC2656-L has a full-scale output of 2.5V with the integrated 10ppm/?C reference and operates from a single 2.7V to 5.5V supply. The LTC2656-H has a full-scale output of 4.096V with the integrated reference and operates from a 4.5V to 5.5V supply. Each DAC can also operate with an external reference, which sets the DAC full-scale output to two times the external reference voltage.These DACs communicate via a SPI/MICROWIRE? compatible 4-wire serial interface which operates at clock rates up to 50MHz. The LTC2656 incorporates a power-on reset circuit that is controlled by the PORSEL pin. If PORSEL is tied to GND the DACs reset to zero-scale. If PORSEL is tied to VCC, the DACs reset to mid-scale.ApplicationsMobile CommunicationsProcess Control and Industrial AutomationInstrumentationAutomatic Test EquipmentAutomotive

Demonstration circuit 1403A is a dual current mode PWM step-down DC/DC converter featuring the LT3692A. The demo circuit is designed for 5V and 3.3V outputs from a 7V to 36V input. The current capability of each channel is up to 3A. Though the LT3692A has over-voltage protection to 60V, the demo board is not designed to highlight this feature.

The LTC3620 is a high efficiency, synchronous buck regulator, suitable for very low power, very small footprint applications powered by a single Li-Ion battery.The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes. Low output voltages are easily supported by the 0.6V feedback reference voltage. The LTC3620-1 option is internally programmed to provide a 1.1V output.The LTC3620 uses a unique variable frequency architecture to minimize power loss and achieve high efficiency. The switching frequency is proportional to the load current, and an internal frequency clamp forces a minimum switching frequency at light loads to minimize noise in the audio range. The user can program the frequency of this clamp by applying an external clock to the FMIN/MODE pin.The battery status output, LOBATB, indicates when the input voltage drops below 3V. To help prevent damage to the battery, an undervoltage lockout (UVLO) circuit shuts down the part if the input voltage falls below 2.8V.The LTC3620 is available in a low profile, 2mm ? 2mm 8-lead DFN package.Applications Hearing Aids Wireless Headsets Li-Ion Cell Applications Button Cell Replacement

The LTC2942 measures battery charge state, battery voltage and chip temperature in handheld PC and portable product applications. Its operating range is perfectly suited for single-cell Li-Ion batteries. A precision coulomb counter integrates current through a sense resistor between the battery?s positive terminal and the load or charger. Battery voltage and on-chip temperature are measured with an internal 14-bit No Latency ??? ADC. The three measured quantities (charge, voltage and temperature) are stored in internal registers accessible via the on-board SMBus/I2C interface.The LTC2942 features programmable high and low thresholds for all three measured quantities. If a programmed threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register.The LTC2942 requires only a single low value sense resistor to set the measured current range. Integrated Sense Resistor LTC2942 No LTC2942-1 Yes Applications Low Power Handheld Products Cellular Phones MP3 Players Cameras GPS