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SC9211C

Low-Power MCU Integrating 1A Switching Charging, 0.6A Boost Output, and Power Management Unit

SC9211CSC9211C

SC9211C

SC9211C is a low-power microcontroller developed by Southchip that integrates 1A switching charging, 600mA boost output, and a power management unit. It features a clear MCU memory architecture, comprehensive system-level control, rich built-in interfaces, flexible configuration modes, and multiple low-power options. The product is mainly used in portable smart electronic devices requiring charging and intelligent control, offering simplified peripheral costs, excellent overall performance, and flexible, convenient development.
SC9211C
SC9211C is a low-power microcontroller developed by Southchip that integrates 1A switching charging, 600mA boost output, and a power management unit. It features a clear MCU memory architecture, comprehensive system-level control, rich built-in interfaces, flexible configuration modes, and multiple low-power options. The product is mainly used in portable smart electronic devices requiring charging and intelligent control, offering simplified peripheral costs, excellent overall performance, and flexible, convenient development.
Product Details
Design / Development
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Product Details

Technical Documentation

Applications

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TWS
Our total power solutions help you achieve super-fast charging, optimize conversion efficiency, and increase overall battery life.
2025.02.17
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Parameter NameParameter Value
PackageQFN26 (2.2x3.3mm)
VIN range4.5-5.5V
Abs. VIN (max)28V
Battery Cell #1s (Li-ion, ~4.2V CV)
MOSint.
Charge Current (max)1A (1000mA)
TopologyBuck (1A switch charger) + Boost (0.6A OTG)
OTG Voltage Range3.15-5.10V
Prog. OTG voltageYes (50mV steps, SW configurable)
Parameter NameParameter Value
Max. OTG current0.6A (600mA)
Rec’d app. power level≤5W (Charge ~5W / Boost ~3W)
I2C CtrlNo (2x UART, 1x I2C)
Prog. IlimSW configurable (CC 50mA-1A)
NTCYes (1ch configurable NTC)
Safety TimerYes (2/8/12/24H selectable)
Cell balancingNo
Features8051 MCU(12MHz), 16KB MTP+1KB RAM, 17 I/O, 12-bit ADC, 2x UART, I2C, 2x 16-bit Timer, 4 PWM, Sleep 2uA, TWS follow-charge
Parameter NameParameter Value
PackageQFN26 (2.2x3.3mm)
VIN range4.5-5.5V
Abs. VIN (max)28V
Battery Cell #1s (Li-ion, ~4.2V CV)
MOSint.
Charge Current (max)1A (1000mA)
TopologyBuck (1A switch charger) + Boost (0.6A OTG)
OTG Voltage Range3.15-5.10V
Prog. OTG voltageYes (50mV steps, SW configurable)
Max. OTG current0.6A (600mA)
Rec’d app. power level≤5W (Charge ~5W / Boost ~3W)
I2C CtrlNo (2x UART, 1x I2C)
Prog. IlimSW configurable (CC 50mA-1A)
NTCYes (1ch configurable NTC)
Safety TimerYes (2/8/12/24H selectable)
Cell balancingNo
Features8051 MCU(12MHz), 16KB MTP+1KB RAM, 17 I/O, 12-bit ADC, 2x UART, I2C, 2x 16-bit Timer, 4 PWM, Sleep 2uA, TWS follow-charge