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  • SC8933QFER

  • SC8933QFER

    SC8933 is a synchronous buck charger with reverse boost
    discharging function. It integrates two N-channel MOSFETs
    with ultra-low Rdson and can support up to 12V high
    efficiency charging and discharging operation.
    In charging mode, it steps down the input voltage to
    effectively charge the single cell battery. SC8933 supports
    trickle charging, constant current (CC) charging and constant
    voltage (CV) charging management functions automatically.
    When working in discharging mode (reverse boost mode), it
    can support up to 12V output and achieve up to 95%
    efficiency with 3.7V battery voltage for 9V2A output load.
    The SC8933 features I2C interface, so the user can easily
    control the charging/discharging mode, and program the
    charging current, charging voltage, output voltage, and
    output current limits through I2C. It also monitors the VBUS
    status of up to three USB ports and provides three NMOS
    gate drivers to control the power path independently.
    The IC also provides IMON pin, through which the MCU can
    monitor the VBUS / VBAT voltage, IBUS / IBAT current and
    the current of each port in real time. The NTC function
    guarantees the battery operation safety. All these features
    help simplify the system design and reduce the BOM.
    The SC8933 supports under voltage protection, over voltage
    protection, over current protection, short circuit protection
    and over temperature protections to ensure safety under
    different abnormal conditions.
    SC8933 adopts 32 pin 4mm x 4mm QFN package.     MPQ:3000

    应用

    ●  移动电源

    ●  锂电池充电器

    ●  快充设备

    ●  智能USB插座

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商品描述

SC8933 is a synchronous buck charger with reverse boost
discharging function. It integrates two N-channel MOSFETs
with ultra-low Rdson and can support up to 12V high
efficiency charging and discharging operation.
In charging mode, it steps down the input voltage to
effectively charge the single cell battery. SC8933 supports
trickle charging, constant current (CC) charging and constant
voltage (CV) charging management functions automatically.
When working in discharging mode (reverse boost mode), it
can support up to 12V output and achieve up to 95%
efficiency with 3.7V battery voltage for 9V2A output load.
The SC8933 features I2C interface, so the user can easily
control the charging/discharging mode, and program the
charging current, charging voltage, output voltage, and
output current limits through I2C. It also monitors the VBUS
status of up to three USB ports and provides three NMOS
gate drivers to control the power path independently.
The IC also provides IMON pin, through which the MCU can
monitor the VBUS / VBAT voltage, IBUS / IBAT current and
the current of each port in real time. The NTC function
guarantees the battery operation safety. All these features
help simplify the system design and reduce the BOM.
The SC8933 supports under voltage protection, over voltage
protection, over current protection, short circuit protection
and over temperature protections to ensure safety under
different abnormal conditions.
SC8933 adopts 32 pin 4mm x 4mm QFN package. MPQ:3000

应用

●  移动电源

●  锂电池充电器

●  快充设备

●  智能USB插座

SC8933是一颗同步降压充电控制器，同时具有反向升压放电功能。SC8933内部集成了两颗功率管（6mΩ及12mΩ Rdson），适用于单节或多节电池并联应用，并提供最大24W输出（12V/A）。充电模式时，SC8933通过将高于电池电压的输入电压降压，从而高效地完成电池充电。SC8913支持完善的充电循环管理包括：涓流充电、恒流充电和恒压充电。放电模式时，SC8933可以高效率地反向升压放电，输入/出电压最高可达14V。SC8933集成I2C接口，因此用户可以很方便地选择充电/放电模式，并通过I2C编程设置输入限流值、输出限流值和输出电压，最大限度简化系统设计，减少BOM。集成3路USB NOMS隔离管驱动并提供相应的电流检测，以及插入（包括负载接入/移除，充电器接/入移除）功能。集成了线损补偿，充放电环路状态标志方便系统设计；创新的监控输出脚，可选输出系统各节点电流/电压信号。支持IDEL模式以及开漏结构的NTC控制设计，极大的降低了待机功耗。SC8933支持完善的保护，包括欠压锁定、过压保护、过流保护、短路警示和过温保护等功能，从而保证各种异常情况下的安全。SC8933提供超小型32脚的4X4 QFN封装

功能

●  集成超低导通电阻功率管, 6/12mR

●  支持12V/2A放电

●  支持4.1~4.5V限制电压的锂电池或锂电池组

●  0.5%的电池电压精度（充电）

●  5%充放电电流限制

●  充放电电压最高支持14V 

●  提供I2C接口控制

●  放电输出电压调整分辨率10mV/Step

●  充放电限制电流调整分辨率25mA/Step

●  可编程VinREG

●  提供3路隔离管驱动

●  支持IMON功能，可检测IBUS/IBAT/VBUS/VBAT/以及三路隔离管电流

●  集成完善的充电管理：涓流充电/恒流充电/恒压充电和充电截止管理功能

●  事件监测功能：充电器插入，移除；负载插入，移除

●  充放电状态指示

●  支持NTC功能

●  可编程线损补偿

●  频率300KHZ-750KHZ可调 

●  完善的保护：欠压保护、过流保护、短路保护和热关断保护