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  • SC1812AQDER

    SC1812A is a synchronous buck-boost charger
    controller which can support reverse discharging
    operation. It can support up to 22V battery voltage, so
    can be used to effectively manage the charging process
    for 1~3 cell Li-ion batteries no matter adapter voltage is
    higher, lower or equal to battery voltage. When a
    system needs to generate an output from the battery,
    SC1812A can also discharge the cells and delivers
    desired output up to 30V.
    Through its I2C interface, user can set the charging /
    discharging mode easily, and program the charging
    current, charging voltage, reserve output voltage,
    current
    limits,
    switching frequency and other
    parameters flexibly. Besides that, SC1812A supports
    fast charging handshake. It also integrates 10-bit ADC,
    so user can read the VBUS / VBAT voltage and current
    in real time, simplifying the system design.  
    SC1812A supports internal current limit, over voltage
    protection, output short protection and over temperature
    protections to ensure safety under abnormal conditions.  
    The SC1812A is in a 32 pin 4x4 QFN package SC1812A 是一款带I2C接口的同步升降压充电控制器，同时支持电池反向放电工作。芯片支持VBAT电池端及VBUS 36V高压工作，在适配器电压高于、低于或者等于电池电压时，均能保证1-4节锂离子电池充电应用。当工作系统需要电池提供能量时，SC1812A也支持电池反向放电工作，输出设定的电压，并且最高放电电压可达36V。用户通过I2C接口可以很方便地选择充电/放电模式，设置充电电流、充电电压、反向输出电压、限流值、开关频率以及其他参数等。除此之外，SC1812A还支持DPDM握手控制。内部集成的10位ADC，可以方便用户实时检测读取VBUS/VBAT电压和电流，另外，SC1812A还可以支持适配器和设备的插拔检测，最大限度的减少外围电路及PCB Space，使系统设计极大地简化。SC1812A支持内部限流保护、过压保护、输出短路保护、过温保护，从而保证了各种异常情况下的安全。SC1812A提供32脚的4x4 QFN封装

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商品描述

SC1812A is a synchronous buck-boost charger
controller which can support reverse discharging
operation. It can support up to 22V battery voltage, so
can be used to effectively manage the charging process
for 1~3 cell Li-ion batteries no matter adapter voltage is
higher, lower or equal to battery voltage. When a
system needs to generate an output from the battery,
SC1812A can also discharge the cells and delivers
desired output up to 30V.
Through its I2C interface, user can set the charging /
discharging mode easily, and program the charging
current, charging voltage, reserve output voltage,
current
limits,
switching frequency and other
parameters flexibly. Besides that, SC1812A supports
fast charging handshake. It also integrates 10-bit ADC,
so user can read the VBUS / VBAT voltage and current
in real time, simplifying the system design.  
SC1812A supports internal current limit, over voltage
protection, output short protection and over temperature
protections to ensure safety under abnormal conditions.  
The SC1812A is in a 32 pin 4x4 QFN package SC1812A 是一款带I2C接口的同步升降压充电控制器，同时支持电池反向放电工作。芯片支持VBAT电池端及VBUS 36V高压工作，在适配器电压高于、低于或者等于电池电压时，均能保证1-4节锂离子电池充电应用。当工作系统需要电池提供能量时，SC1812A也支持电池反向放电工作，输出设定的电压，并且最高放电电压可达36V。用户通过I2C接口可以很方便地选择充电/放电模式，设置充电电流、充电电压、反向输出电压、限流值、开关频率以及其他参数等。除此之外，SC1812A还支持DPDM握手控制。内部集成的10位ADC，可以方便用户实时检测读取VBUS/VBAT电压和电流，另外，SC1812A还可以支持适配器和设备的插拔检测，最大限度的减少外围电路及PCB Space，使系统设计极大地简化。SC1812A支持内部限流保护、过压保护、输出短路保护、过温保护，从而保证了各种异常情况下的安全。SC1812A提供32脚的4x4 QFN封装

参数名称参数数值
VIN range2.7-36V
Abs. VIN (max)40V
Battery Cell #1~4s
MOSext.
Charge Current (max)10A+
TopologyBuck-boost
OTG voltage2.7-36V
Prog. OTG VoltageI2C prog.
参数名称参数数值
Max. OTG current5A+
Rec’d app. power level60W typ.
I2C Ctrl√
Prog. IlimI2C prog.
ADC10-bit
FeaturesFast-IN-Charge (DPDM), Event detection, port pwr path ctrl
PackageQFN 4x4