Circuits & Schematics Linear Technology - 2

11. Tapped inductor, boost regulator deliver high voltage
    Adam Huff David Ng
    Circuits Supply Linear Technology LT1949
    When you face the task of generating a regulated voltage that's higher than the available power-supply voltage, you may consider a boost regulator. Although a boost converter can in theory generate almost any voltage that's higher than its ...
    May 11, 2022
12. Positive Regulator Makes Negative DC/DC Converter
    Keith Szolusha
    Circuits Supply Linear Technology LT1765EFE
    Power-supply designers can choose from a plethora of available positive buck regulators that can also serve as negative boost DC/DC converters. Some buck regulators have a negative-feedback reference voltage expressly for this purpose, but ICs that ...
    May 16, 2021

13. ORing low-voltage sources simply and cheaply on 3.3V microcontroller boards
    Circuits Supply Linear Technology LT4351
    Most of today’s microcontrollers are powered with a DC voltage of 3.3 V or less. Batteries are involved for low-power embedded systems that have intermittent uses. For permanent usage, designs usually include a mains supply (with transformer ...
    May 10, 2021
14. Use two phases to cut current and improve EMI
    Goran Perica
    Circuits Supply Linear Technology LTC3862
    In dc/dc-converter applications in which the input voltage may be lower or higher than the output voltage, you can use either a flyback converter or a SEPIC (single-ended-primary-inductor converter). SEPICs offer lower input-current ripple and ...
    Mar 16, 2021
15. SEPIC generates 5V at 100 mA
    Circuits Supply Linear Technology LT1613
    Some applications require an input voltage higher than the breakdown voltage of the IC supply pin. In boost converters and SEPICs (single-ended primary-inductance converters), you can separate the V IN pin of the IC from the input inductor and use ...
    Feb 8, 2021
16. Bootstrapping allows single-rail op amp to provide 0V output
    Jim Williams
    Circuits Analogue Design Supply Linear Technology LTC1150
    Many single-supply-powered applications require amplifier-output swings within 1 mV or even submillivolts of ground. Amplifier-output-saturation limitations normally preclude such operation. Figure 1. This configuration uses bootstrapping to allow ...
    Feb 4, 2021
17. LED Driver Controls Thermo-Electric Cooling
    Circuits Supply Linear Technology LTC3454
    Electronic Design Opto-electronic systems frequently require temperature stabilization for components such as laser diodes, photodiodes, prisms, and lenses. The established method for providing stabilization is to attach a resistive temperature ...
    Oct 19, 2020
18. Dual-Channel, 6 A Buck Regulator Delivers High Efficiency Compact Solutions
    Zhongming Ye
    Circuits Supply Linear Technology LTC3636
    System designers are asked to produce smaller, higher efficiency power supply solutions to meet the demands of power thirsty SoCs and FPGAs across all industries. The space available for the power supply footprint is critical in advanced ...
    Jul 28, 2020
19. Simple Energy-Tripped Circuit Breaker with Automatic Delayed Retry
    Tim Regan
    Circuits Supply Linear Technology LT1999 LTC6994 LT6108
    Introduction A circuit breaker protects sensitive load circuits from excessive current flow by opening the power supply when the current reaches a predetermined level. The simplest circuit breaker is a fuse, but blown fuses require physical ...
    Jul 15, 2020
20. Improved Power-Factor Corrector Further Minimizes Miller Effect
    Gregory Mirsky
    Circuits Supply Linear Technology LT1249 LTC1693
    In [1] a cascode connection of two MOSFETs helped eliminate the Miller effect and significantly improve power factor correction (PFC) performance. Recall that the Miller effect is a very large increase in a transistor’s apparent input ...
    Feb 10, 2020

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