Linear Technology Manuals - Page 31

Linear Technology manuals, page 31

• LINEAR Battery Conditioner Extends the Life of Li-Ion Batteries Design Note 472 George H. Barbehenn

  This document describes a battery conditioner that extends the life of lithium-ion batteries.

• LINEAR Using a Differential I/O Ampli er in Single-Ended Applications Design Note DN473 handbook

  This Design Note addresses some of the practical implications and demonstrates specific single-ended applications using the 3GHz gain-bandwidth LTC6406 differential I/O amplifier.

• LINEAR Dual Module DC/DC Regulator Produces High Ef ciency 4A Outputs from a 4.5V to 26.5V Input Design Note 474 Alan Chern

  This document introduces a new type of DC/DC regulator system that can produce two 4A outputs from a 4.5V to 26.5V input voltage range, and only requires a few external components.

• LINEAR Power Buck Regulator Safely Rides Through Automotive Load Dumps Design Note 475 handbook

  The LT3682 is a new 1A buck regulator that overcomes the duty cycle limitation by monitoring the current through the external catch diode, and delaying the generation of new switch pulses if this current exceeds a defined value. The LT3682 safely accommodates output shorts and overload conditions.

• LINEAR Precision Matched Baseband Filter ICs Outperform Discrete Implementations Design Note 476 handbook

  This document introduces the LTC6601-1/-2 and LTC6605-7/-10/-14, 3 precision matched baseband filter ICs that provide precision filtering performance in the 1.25MHz to 20MHz frequency range.

• LINEAR Dual Output Step-Down Controller Produces Accurate Ef cient Reliable High Current Rails Design Note 478 Mike Shriver Theo Phillips

  The LTC3855 is a synchronous buck controller from Linear Technology that can generate high current rails with the accuracy and efficiency to satisfy the most demanding requirements of today’s leading edge network, telecommunications and server applications. It features strong gate drivers that support operation with per-phase currents above 20A, an accurate 0.6V ±0.75% reference, and an integrated differential amplifier (diff amp) that allows remote sensing of the output of critical rails.

• LINEAR Dual Output High Ef ciency Converter Produces 3.3V 8.5V Outputs from a 9V to 60V Rail Design Note 479 handbook

  This design note introduces the LTC3890 high effi ciency dual output step-down converter that can produce 3.3V and 8.5V outputs from a 9V to 60V rail. This 50μA quiescent current device can produce two output voltages ranging from 0.8V to 24V when powered from an input voltage of 4V to 60V. The device features up to 99% duty cycle capability for low voltage dropout applications, adjustable soft-start or voltage tracking and selectable continuous, pulse-skip- ping or Burst Mode® operation with a no-consumption standby mode.

• LINEAR Fast Time Division Duplex (TDD) Transmission Using an Upconverting Mixer with a High Side Switch Design Note 480 handbook

  This document introduces a method of fast time division duplex (TDD) transmission using an upconverting mixer with a high side switch. This method achieves fast Tx switching by applying a power switch at the transmit upconverting mixer, which removes both the transmit signal and all other mixing products from the mixer RF output. This method has the advantages of low cost, good performance and power saving during the Tx off-time.

• LINEAR 2-Phase Dual Output Synchronous Boost Converter Solves Thermal Problems in Harsh Environments Design Note 481 handbook

  This document describes a dual output synchronous boost converter that solves thermal problems in harsh environments. By replacing the Schottky output rectifier with a synchronous MOSFET rectifier, power dissipation can be reduced, eliminating the need for heat sinks and reducing costs.

• LINEAR A Low Power Direct-to-Digital IF Receiver with Variable Gain Design Note 482 Walter Stri er

  This is a design note about a low-power, direct-to-digital IF receiver. The receiver uses a variable gain amplifier + analog-to-digital converter (VGA + ADC) combination circuit that preserves the IF receiver dynamic range over a 31dB gain adjustment range and effectively demodulates and digitizes both the I and Q signals.

• LINEAR Energy Harvester Produces Power from Local Environment Eliminating Batteries in Wireless Sensors Design Note 483

• LINEAR Convert Temperature to Current at High Linearity with LT3092 Current Source Design Note 484 handbook

  This document describes a method for converting temperature to current using the LT3092 high-linearity current source.

• LINEAR Complete Energy Utilization Improves Run Time of a Supercap Ride-Through Application by 40% Design Note 485 George H. Barbehenn

  This document introduces a design scheme for a supercapacitor ride-through application that maximizes runtime using an energy scavenging scheme, improving runtime by 40%.

• LINEAR 2-Phase Synchronous Buck Controller Features Light Load Stage Shedding Mode Active Voltage Positioning Low RSENSE Remote VOUT Sensing handbook

  This document describes the features and characteristics of the LTC3856 single-output 2-phase synchronous buck controller, including light load stage shedding mode, active voltage positioning, low RSENSE, and remote VOUT sensing.

• LINEAR Dual Output Monolithic Synchronous Buck Regulator Operates from 3.6V to 15V Inputs Delivers 3A Per Channel Design Note 1020 Tom Gross

  The LTC3633 is a high efficiency, dual output monolithic synchronous step-down switching regulator, capable of delivering 3A of output current per channel from input voltages between 3.6V and 15V. Its compact 4mm × 5mm QFN package has very low thermal impedance eliminating the need for an external heat sink. Its high input voltage capability makes the LTC3633 ideal for 12V distributed power systems.