LINEAR Manuals

This article introduces the features of the LT8410/-1 DC/DC boost converter, including ultra-low quiescent current, integrated high value feedback resistors, and output disconnect.

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The LT3653 and LT3663 are monolithic step-down switching regulators that have an accurate output current limit programmable from 400mA to 1.2A.

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This document describes how the LTC6802 multicell battery stack monitor extends the life of lithium-ion batteries in hybrid electric vehicles. The LTC6802 is a core component in battery management systems for lithium-ion batteries.

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The LT3492 is a 60V triple output LED driver for high input and/or high output voltage backlighting or direct lighting applications. A single 4mm × 5mm IC can drive a large number of LEDs, reducing overall solution cost when compared to less capable drivers. A built-in gate driver for a disconnect PMOS in series with the LED string, along with other techniques, enables a 3000:1 PWM dimming ratio. When coupled with the part’s analog dim- ming functions, the overall dimming ratio can be as high as 30,000:1. The LT3492 can be configured into buck- mode, boost-mode or buck-boost mode, depending on the available in- put voltage source and the number and configuration of LEDs to be driven.

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This document introduces the features and characteristics of the LT8410/-1 high efficiency boost converter. The converter only requires 8.5μA of quiescent current in standby mode, and integrates high value (12.4M/0.4M) output feedback resistors, significantly reducing input current when the output is in regulation with no load. It also has built-in soft-start, overvoltage protection and a wide input range.

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Describes the LT3663 high-voltage, high-frequency, high-efficiency supercapacitor charger circuit, which is suitable for large-capacity (tens to hundreds of farads) supercapacitor applications and can power solid state RAID disks and other applications when power is lost.

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The LTC3756 is a 3V/3.3V low voltage multi-output switching regulator that supports two input power sources and can single-stage convert from either input power source. It supports up to 800mA of output current, features high efficiency, and low power consumption.

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The LTC4160 is a versatile, high efficiency power manager and battery charger that incorporates a bidirectional switching regulator, full featured battery charger, an ideal diode (with a controller for an optional external ideal diode), and an optional overvoltage protection circuit.

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The product is a USB power management IC that can simultaneously support USB On-The-Go and USB charging functions.

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This product is a highly integrated dual switching regulator that produces positive and negative voltag- es for AMOLEDs, CCDs, op amps, and general ±5V and ±12V supplies.

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This document introduces LTC3878 and LTC3879, two power converters with low output voltage, low duty factor and wide control bandwidth. LTC3878 and LTC3879 are the latest No RSENSE series power converters, which can meet the requirements of digital electronics for low voltage power supplies.

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The LT3650 is a single-cell Li-Ion battery charger that can be powered directly from high voltage automotive and industrial supplies. The device features a 1MHz switching frequency that allows the use of small inductors, and is housed in a tiny 3mm × 3mm DFN12-pin package. The IC has built-in reverse current protection, which blocks current flow from the battery back to the input supply if that supply is disabled or discharged to ground, so a single-cell LT3650 charger does not require an external blocking diode on the input supply.

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Two new versatile DC/DC controller ICs, the LT®3757 and LT3758, are optimized for boost, flyback, SEPIC and inverting converter applications. The LT3757 operates over an input range of 2.9V to 40V, suitable for ap- plications from single-cell lithium-ion battery portable electronics up to high voltage automotive and industrial power supplies. The LT3758 extends the input voltage to 100V, providing flexible, high performance operation in high voltage, high power telecom- munications equipment. Both ICs exhibit low shutdown quiescent cur- rent of 1µA, making them an ideal fit for battery-operated systems. Both integrate a high voltage, low dropout linear (LDO) regulator. Thanks to a novel FBX pin architecture, the LT3757 and LT3758 can be connected directly to a divider from either the positive output or the negative out- put to ground. They also pack many popular features such as soft-start, input undervoltage lockout, adjust- able frequency and synchronization in a small 10-lead MSOP package or a 3mm × 3mm QFN package.

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The LTC6930 is a self-contained, fully integrated all silicon oscillator that occupies a unique space within the world of clock solutions, providing a combination of accuracy and low power features that is hard to beat. It can accurately provide fixed frequencies between 32.768kHz and 8.192MHz over a wide supply range of 1.7V–5.5V without the need for additional external components. It typically dissipates between 100µA and 500µA depending on frequency and load.

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This article introduces the LTC6412, Linear Technology's first high frequency, analog-controlled VGA—now added to Linear Technology's existing portfolio of digitally controlled VGAs.

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The LTM8025 is a 3A µModule DC/DC buck converter that operates from 3.6V to 36V inputs to produce output voltages as low as 0.8V and as high as 24V. Furthermore, the LTM8025 features single cycle Burst Mode® operation, so it is able to handle a wide range of load currents, from no load to 3A.

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This article introduces linear technology's latest high performance amplifiers, which can provide high performance, low power consumption, small size, low cost and ease of use, helping engineers design better products

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