Circuits & Schematics Linear Technology - 7

61. Inverting Regulator Takes Inputs Up to 50V and Supports Outputs to 4A
    Victor Khasiev
    Circuits Supply Power Linear Technology LTC7149
    Introduction Positive-to-negative DC/DC conversion (inverting output) is widely used in LCD devices, OLED displays, audio amplifiers, industrial equipment, measurement tools, test systems, LED drivers and battery chargers. In all of these cases, ...
    May 9, 2017
62. Bidirectional DC/DC Regulator and Supercapacitor Charger
    Victor Khasiev
    Circuits Supply Power Linear Technology LTC3110 LT8608
    Introduction The LTC®3110 bidirectional buck-boost DC/DC regulator charges and balances a supercapacitor when a bus voltage is present (for example 3.3 V) and discharges the supercapacitor into the load when the bus fails. The LTC3110 maintains ...
    May 5, 2017

63. Simple, Fast Pulse Source Outpaces Expensive Lab Equipment
    Mitchell Lee
    Circuits Analogue Design Oscillators Linear Technology LTC3803
    A source of fast pulse edges, simulating a step function, is often useful in making lab measurements of one kind or another. For example, it is possible to evaluate the rise time of RG-58/U or other coaxial cables using lengths of only 10 to 20 ...
    May 2, 2017
64. One Device Replaces Battery Charger, Pushbutton Controller, LED Driver and Voltage Regulator ICs in Portable Electronics
    Circuits Supply Linear Technology LTCR3577
    Marty Merchant, Linear Technology Design Note 470 Introduction The LTCR3577/LTC3577-1 integrates a number of portable device power management functions into one IC, reducing complexity, cost and board area in handheld devices. The major functions ...
    Apr 20, 2017
65. Step-Down Converter Delivers 25A at 12VOUT from Inputs Up to 60V
    Victor Khasiev
    Circuits Supply Power Linear Technology LTC3890 LTC3891
    Introduction The LTC®3890 (dual outputs) and LTC3891 (single output) step-down DC/DC controllers directly accept inputs from 4 V to 60 V. This wide input range covers input voltages for single or double battery automotive environments, thus ...
    Apr 17, 2017
66. High-Voltage Amplifier Extends Coulomb-Counter Range to ±270 V
    Circuits Analogue Design Measurement Linear Technology LT6375 LTC2941
    Kris Lokere, Linear Technology Electronic Design Low-range current (coulomb counting) measurement is a challenge when the associated voltage is relatively high, but a configuration of standard ICs meets the requirements. A coulomb counter can ...
    Apr 11, 2017
67. Monolithic Linear Battery Charger Operates from Inputs Up to 60V
    Circuits Supply Power Linear Technology LTC4079
    Joshua Yee, Linear Technology Design Note 535 Introduction For charging relatively low capacity batteries, or maintenance charging backup and keep-alive batteries, linear topology battery chargers are valued for their compact footprints, simplicity ...
    Mar 29, 2017
68. Low Noise, Precision Op Amp Drives High Resolution SAR ADCs
    Circuits Analogue Design Linear Technology LT1637 LT5400 LT6018 LTC2378-20 LTC2387-18
    Erjon Qirko and Kris Lokere, Linear Technology Design Note 1039 Introduction The LT6018 is an ultralow noise (1.2 nV/√Hz at 1 kHz) operational amplifier with ultralow distortion ( 115 dB at 1 kHz). It has a gain bandwidth product of 15 MHz, ...
    Mar 6, 2017
69. 3A, 1MHz Buck Mode LED Driver with Integrated Voltage Limiting
    Circuits Light Power Linear Technology LT3952
    Matthew Grant, Linear Technology Design Note 556 Introduction The LT®3952 monolithic LED driver includes a 4 A, 60 V DMOS power switch, excellent for driving high current LEDs in buck mode. Among its many features is an input current sense ...
    Mar 1, 2017
70. Tiny 2-Cell Solar Panel Charges Batteries in Compact, Off-Grid Devices
    Circuits Supply Power Solar Linear Technology LTC3105 LTC4071
    Fran Hoffart, Linear Technology Design Note 491 Introduction Advances in low power electronics now allow placement of battery-powered sensors and other devices in locations far from the power grid. Ideally, for true grid independence, the batteries ...
    Feb 1, 2017

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