データシートサーチシステム |
|
ACT4921QI データシート(PDF) 1 Page - Active-Semi, Inc |
|
ACT4921QI データシート(HTML) 1 Page - Active-Semi, Inc |
1 / 35 page ACT4921QI Rev 1.0, 18-Jan-2018 Innovative PowerTM www.active-semi.com ActiveSwitcherTM is a trademark of Active-Semi Copyright © 2018 Active-Semi, Inc. 1 Power Loss Protection with 6A eFuse FEATURES Optimized for Low Voltage Applications 2.6-to-7V Operating Input Range 8V Max Input Blocking Voltage Adjustable In-rush Current Control Configurable Input Power Failure Level Programmable up to 6A Input Current Limit Programmable 5V to 28V Boost Storage Volt- age 28V@4A Synchronous Buck Supports 100% Duty Cycle Programmable up to 2.25MHz Buck Operating Frequency for Small Inductor Size Power Loss, Vout Power Good, and Storage Cap Power Good Indicators Compatible with Different Types of Storage Caps: Super Caps, Electrolytic, Tantalum, POSCAP etc. Autonomous Health Monitoring for Detection of Earlier Storage Capacitor Failures Configurable Interrupts to Inform Host for any Faults/Status Change eFuse, Boost, and Buck UV/OV/OC Protection Thermal Alert and Protection Thermal Enhanced FCQFN 4x4-32 package APPLICATIONS • Solid State Drives • Power Backup Systems • Industrial Applications • eFuse • Hot Plug Devices GENERAL DESCRIPTION The ACT4921 device is a highly integrated power loss protection IC. It provides backup storage power in the event of an input power failure. A built-in boost converter provides high voltage energy storage to minimize storage capacitor size requirements. The built-in buck converter regulates the storage voltage to a fixed output voltage. It contains internal, back-to- back eFuse FETs to provide bi-directional input to output isolation. The IC also provides hot swap and inrush current control. The ACT4921 is very flexible and can easily be configured with I2C and external components. It features programmable storage capacitor voltage to optimize the storage capacitor sizing and system run time. The internal health monitoring provide an extra layer of protection and improve system reliability and early capacitor failure notification. It automatically checks the storage capacitor health and notifies the user when the energy in the storage caps is not sufficient for backup power. The built-in synchronous buck converter maximizes energy transfer from the storage caps to the system. ACT4921 provides an I2C bus interface to allow MCU control and monitoring. There are supervisor monitors for the input voltage, output voltage, and storage voltage. It is available with the thermal enhanced QFN 4x4 32 pin package. 28V Buck/Boost Controller Caps Health Monitor/ ADC Input 2.6V‐7V Blocking up to 8V 2.6V‐6V 5V-28V 40mΩ FET 25mΩ FET PMU System Core/Flash 5V-28V eFuse 20mΩ Inrush Controller Blocking FET |
同様の部品番号 - ACT4921QI |
|
同様の説明 - ACT4921QI |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |