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  • SC8918AQFER

    SC8918A是一颗同步Buck-Boost充电转换器，内部集成了4颗功率管，可最大限度简化客户应用设计，减少外围BOM及PCB space。SC8918A使用电流控制模式，可支持超宽的2.7V至22V VBUS电压，无论VBUS是高于，低于或是等于电池电压，SC8918A可有效管理2节至4节电池的充电。SC8918A支持输入电流限流，动态电源管理及快充模式检测。SC8918A支持内部电流限流，过压/欠压保护，输出短路保护以及过温保护，可以确保系统能适应各种异常情况。SC8918A采用21 pin 4x4 QFN封装。
    SC8918A is a synchronous buck-boost charger converter.
    Four switches are integrated to simplify the system design.
    SC8918A employs current-mode control and can support
    very wide input and output voltage range. It can support
    applications from 2.7V to 22V VBUS range. It is able to
    effectively manage charging for 2~4 cell batteries no matter
    input/output voltage is higher, lower or equal to battery
    voltage.
    SC8918A supports input current limit, DPM (dynamic power
    management) function, and fast charging detecting.
    Charging voltage and current limit can be adjusted by
    external resistor.
    SC8918A supports internal current limit, under voltage
    protection, over voltage protection, output short protection
    and over temperature protections to ensure safety under
    abnormal conditions.
    The IC is in a 21 pin 4x4 QFN package.  

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商品描述

SC8918A是一颗同步Buck-Boost充电转换器，内部集成了4颗功率管，可最大限度简化客户应用设计，减少外围BOM及PCB space。SC8918A使用电流控制模式，可支持超宽的2.7V至22V VBUS电压，无论VBUS是高于，低于或是等于电池电压，SC8918A可有效管理2节至4节电池的充电。SC8918A支持输入电流限流，动态电源管理及快充模式检测。SC8918A支持内部电流限流，过压/欠压保护，输出短路保护以及过温保护，可以确保系统能适应各种异常情况。SC8918A采用21 pin 4x4 QFN封装。
SC8918A is a synchronous buck-boost charger converter.
Four switches are integrated to simplify the system design.
SC8918A employs current-mode control and can support
very wide input and output voltage range. It can support
applications from 2.7V to 22V VBUS range. It is able to
effectively manage charging for 2~4 cell batteries no matter
input/output voltage is higher, lower or equal to battery
voltage.
SC8918A supports input current limit, DPM (dynamic power
management) function, and fast charging detecting.
Charging voltage and current limit can be adjusted by
external resistor.
SC8918A supports internal current limit, under voltage
protection, over voltage protection, output short protection
and over temperature protections to ensure safety under
abnormal conditions.
The IC is in a 21 pin 4x4 QFN package.  

Features • 

Buck-Boost Battery Charger for 2 to 4 Cell Batteries 4.2V/4.35V/4.4V for 2 and 3 cells, 4.2V/4.35V for 4 cells 

• Charging Management: Trickle Charging, CC Charging, CV Charging, Charging Termination, Auto Recharge 

• Integrated Switches, 10 mΩ for Q1/4, 20 mΩ for Q2/3 

• Wide VBAT Range: 2.7 V to 22 V, 25V sustainable 

• Wide VBUS Range: 2.7 V to 22 V, 25V sustainable

• DP / DM Handshaking for Fast Charging Mode 

• Safety Timer • Programmable Current Limit 

• NTC Battery Temperature Protection • Charging Status Indication 

• Current Monitor • Under Voltage Protection, Over Voltage Protection, Over Current Protection 

• Short Protection and Thermal Shutdown Protection • QFN-21 4 x 4 Package