Linear Technology Manuals - Page 58

Linear Technology manuals, page 58

• LINEAR TECHNOLOGY - 1 LTC1286/LTC1298 handbook

  LTC1286/LTC1298 Micropower Sampling 12-Bit A/D Converters In S0-8 Packages

• LINEAR TECHNOLOGY LTC1698 Manual

  The LTC1698 is a precision secondary-side forward converter controller that synchronously drives external N-channel MOSFETs. It is designed for use with the LT3781 primary-side synchronous forward converter controller to create a completely isolated power supply. The LT3781 synchronizes the LTC1698 through a small pulse transformer and the LTC1698 drives a feedback optocoupler to close the feedback loop. Output accuracy of ±0.8% and high efficiency over a wide range of load currents are obtained. The LTC1698 provides accurate secondary-side current limit using an external current sense resistor. The input voltage at the MARGIN pin provides ±5% output voltage adjustment. A power good flag and overvoltage input are provided to ensure proper power supply conditions. An auxiliary 3.3V logic supply is included that supplies up to 10mA of output current.

• LINEAR TECHNOLOGY LTC3716 Manual

  The LTC3716 is a 2-phase, VID programmable, synchronous step-down switching regulator controller that drives two N-channel external power MOSFET stages in a fixed frequency architecture. The 2-phase controller drives its two output stages out of phase at frequencies up to 300kHz to minimize the RMS ripple currents in both input and output capacitors. The 2-phase technique effectively multiplies the fundamental frequency by two, improving transient response while operating each channel at an optimum frequency for efficiency. Thermal design is also simplified. An operating mode select pin (FCB) can be used to regulate a secondary winding or select among three modes including Burst Mode TM operation for highest efficiency. An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required in high current applications. The RUN/SS pin provides soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latchoff is disabled. OPTI-LOOP compensation allows the transient response to be optimized for a wide range of output capacitors and ESR values.

• LINEAR TECHNOLOGY LTC1594L/LTC1598L 4- 8-Channel 3V Micropower Sampling 12-Bit Serial I/O A/D Converters handbook

  The LTC1594L/LTC1598L are 3V micropower, 12-bit sampling A/D converters that feature 4- and 8-channel multiplexers, respectively. They typically draw only 160µA of supply current when converting and automatically power down to a typical supply current of 1nA between conversions. The LTC1594L is available in a 16-pin SO package and the LTC1598L is packaged in a 24-pin SSOP. Both operate on a 3V supply. The 12-bit, switched-capacitor, successive approximation ADCs include a sample-and-hold. On-chip serial ports allow efficient data transfer to a wide range of microprocessors and microcontrollers over three or four wires. This, coupled with micropower consumption, makes remote location possible and facilitates transmitting data through isolation barriers. The circuit can be used in ratiometric applications or with an external reference. The high impedance analog inputs and the ability to operate with reduced spans (to 1.5V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages.

• LINEAR TECHNOLOGY LT1506 Manual(1)

  The LT ®1506 is a 500kHz monolithic buck mode switching regulator functionally identical to the LT1374 but optimized for lower input voltage applications. It will operate over a 4V to 15V input range compared with 5.5V to 25V for the LT1374. A 4.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. High switching frequency allows a considerable reduction in the size of external components. The topology is current mode for fast transient response and good loop stability. Both fixed output voltage and adjustable parts are available. A special high speed bipolar process and new design tech- niques achieve high efficiency at high switching frequency. Efficiency is maintained over a wide output current range by keeping quiescent supply current to 4mA and by utiliz- ing a supply boost capacitor to saturate the power switch. The LT1506 fits into standard 7-pin DD and fused lead SO-8 packages. Full cycle-by-cycle short-circuit protection and thermal shutdown are provided. Standard surface mount external parts are used, including the inductor and capacitors. There is the optional function of shutdown or synchronization.

• LINEAR TECHNOLOGY LT1086 Manual

  This document introduces the features and characteristics of the LT1086 series products, including adjustable or fixed 3.3V, 3.6V, 5V, 12V output voltage, 1.5A output current, 1V input-output differential, guaranteed voltage drop at multiple current levels, 0.015% line regulation, 0.1% load regulation, 100% thermal limit functional test, >75dB ripple rejection.

• LINEAR TECHNOLOGY LT1991 Precision 100 A Gain Selectable Ampli er handbook

  The LT1991 is a low-power, high-precision operational amplifier with adjustable gain that is suitable for use in differential amplifier circuits. The device is available in a 10-lead MSOP and a low profile (0.8mm) 3mm x 3mm DFN package.

• LINEAR TECHNOLOGY LTC2401/LTC2402 Manual

  This document introduces the features and characteristics of LTC2401/LTC2402 1-/2-Channel 24-Bit µPower No Latency ∆ΣTMADCs in MSOP-10.

• LINEAR TECHNOLOGY LTC2482 16-Bit ADC with Easy Drive Input Current Cancellation handbook

  The LTC2482 is a high-precision, low-power, high-speed 16-bit single-channel analog-to-digital converter that utilizes the No Latency ∆Σ architecture and Easy Drive technology to achieve true latency-free operation. It also features single-supply operation, fully differential inputs, an internal oscillator, and a 10-pin DFN package

• LINEAR TECHNOLOGY PWM LED Driver Boost Flyback SEPIC Controller LTC3783 handbook

  The document introduces the features of the LTC3783 LED driver and boost, flyback and SEPIC controller.

• LINEAR TECHNOLOGY LTC2440 Manual(1)

  The LTC2440 is a high speed 24-bit No Latency Δ∑TM ADC with 5ppm INL and 5μV offset. It uses proprietary delta-sigma architecture enabling variable speed and resolution with no latency. Ten speed/resolution combinations (6.9Hz/200nVRMS to 3.5kHz/25μVRMS) are programmed through a simple serial interface. Alternatively, by tying a single pin HIGH or LOW, a fast (880Hz/2μVRMS) or ultralow noise (6.9Hz, 200nVRMS, 50/60Hz rejection) speed/resolution combination can be easily selected.

• LINEAR TECHNOLOGY LTC2440 Manual(1)(1)

  The LTC2440 is a high speed 24-bit No Latency Δ∑TM ADC with 5ppm INL and 5µV offset. It uses proprietary delta-sigma architecture enabling variable speed and reso- lution with no latency.

• LINEAR TECHNOLOGY LTC3802 Manual

  The LTC3802 is a dual switching regulator controller optimized for high efficiency step-down conversion from input voltages between 3V to 30V. The controller uses a leading edge modulation scheme to allow extremely low duty cycle operation. The constant frequency voltage mode controller allows a phase-lockable frequency between 330kHz and 750kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages 180° out-of-phase.

• LINEAR TECHNOLOGY LT4220 Manual

  The LT4220 is a dual voltage hot swap controller from Linear Technology Corporation that supports positive and negative two-way power, has overcurrent limiting, power tracking, and switch tube shutdown functions, and is used in RAID systems, –5.2V ECL power supplies, industrial controls, and other scenarios.

• LINEAR TECHNOLOGY LTC3830/LTC3830-1 Manual

  LTC3830/LTC3830-1 3830fa high power step-down synchronous DC/DC controllers for low voltage operation