LINEAR Manuals

This document introduces the LT®3496 triple LED driver, which can achieve a PWM dimming ratio of up to 3000:1, supports multiple working modes, and is packaged in a 4mm × 5mm QFN package, which is highly efficient, compact, and cost-effective.

Supercapacitors (or ultracapacitors) are increasingly being used in applications that require short-term energy storage and intermittent high-energy pulses. This document introduces a power ride-through circuit application where a backup energy source switches in and powers the load during a short power supply failure. This application has traditionally been dominated by batteries, but electric double layer capacitors (EDLCs) are gaining traction due to their decreasing price-per-farad, size, and effective series resistance per capacitance (ESR/C).

The LT6105 is a current sense amplifier whose inputs can operate over a range of -0.3V to 44V independent of the supply voltage.

This design note introduces a 4-phase boost converter that delivers 384W of power without a heat sink. The converter uses the LTC3862 controller and employs multiphase operation to improve efficiency and reduce ripple voltage and currents in both the input and output capacitors.

This Design Note introduces the LTC4151 power monitor, which can monitor voltages from 12V to 80V and output data through the I2C interface.

This design note introduces a programmable baseband filter for software-defined UHF RFID readers. The filter uses a high-linearity direct conversion receiver to achieve reliable multitag detection and high data throughput. The filter's bandwidth can be programmed from 15 kHz to 150 kHz to meet the needs of various applications.

This document describes a low-profile synchronous, 2-phase boost converter that produces 200W power with 98% efficiency. The converter is suitable for automotive audio amplifiers, offering high efficiency and compactness.

This document introduces a method of combining high-precision sensors with low-cost ADCs that can use a $1000 sensor with a $1 ADC. This method uses the LTC2450 16-bit single-ended input, delta-sigma ADC, which has 2LSB INL, 2LSB offset, and 0.01% gain error, making it a perfect match for many high-end industrial sensors as well as a wide variety of data acquisition, measurement, control, and general purpose voltage monitoring applications.

The LTC3608 is a monolithic synchronous step-down regulator that delivers up to 12A from a wide input voltage range of 4.5V to 20V. It operates at a nominal 650kHz switching frequency, which enables the use of low-profile inductors and capacitors while maintaining high efficiency.

This article introduces a 100V controller that drives high power LED strings from just about any input. The controller features a 125W, 83V at 1.5A, 97% efficient boost LED driver for stadium lighting. It is suitable for large area and high lumens light sources, and can handle wide ranging inputs. It can be applied to various applications including LCD backlights, industrial and architectural lighting, automotive lights, streetlights, billboards, and stadium lights.