< img src="https://mc.yandex.ru/watch/95524020" style="position:absolute; left:-9999px;" alt="" />
HT ELECTRONICS Cart Cart ( )
HT ELECTRONICS BOMBOM
All Products

Introduction, characteristics, and applications of Analog Devices' LT8277 multiphase boost DC/DC controller

2/12/2024 9:35:14 AM

Summary: Provides 2-phase constant frequency, current mode boost, and wide input voltage range of 3V to 40V.

LT8277 Analog Devices

Analog Devices LT8277 multiphase boost DC/DC controller provides 2-phase constant frequency, current mode boost and a wide 3V to 40V input voltage range. The SEPIC controller is designed to drive n-channel power mosfets. The two-phase interleaving feature reduces system filter capacitor requirements. The internal LDO regulator draws power from V(IN) or V(OUT) to provide the 5V supply to the gate driver. Fixed frequency, current mode architecture results in stable operation over a wide range of supply/output voltages. The operating frequency of the LT8277 can be programmed from 100kHz to 2MHz with external resistors or can be synchronized to an external clock using the SYNC pin. The CLKOUT and SYNC pins allow multiple LT8277 devices to perform together, facilitating 4-phase or 8-phase operation.

The ADI LT8277 sets the output voltage range from 9V to 60V through the SPI interface. A window comparator on the V(OUT) pin reports through the PGOOD pin, providing an indication of the output voltage status.

The LT8277 is packaged in a 20-pin 3mm x 4mm side-solderable QFN package.


characteristic

  • 3V to 40V wide input voltage range

  • Two-phase interleaved operation reduces input and output capacitor requirements

  • Output voltage adjustment SPI interface

  • Low shutdown current less than 1µA

  • Internal 5V low dropout regulator provided by V(IN) or V(OUT)

  • PGOOD output status reporting pin

  • 100kHz to 2MHz programmable internal frequency

  • Frequency synchronization

  • Clock output for 4 or 8 phase operation

  • Spread spectrum frequency modulation (SSFM) is used to reduce electromagnetic interference

  • Available in 3mm x 4mm 20-lead side-solderable QFN package

  • AEC-Q100 qualified for automotive applications


app

  • electricity supply

  • car

  • telecommunications

  • industry

Declaration: This article is copyrighted by the original author. Reposting this article is solely for the purpose of disseminating more information. If there are any inaccuracies in the author's information, please contact us as soon as possible for correction or removal. Thank you for your attention!

Prve：Introduction, features, and applications of Renesas Electronics RZ/G3S microcontroller

Next：Introduction, characteristics and applications of Burns MF-RHS high temperature PPTC resettable fuse