980 YFC LM4FS1AH SMC IC MacBook Air

The 980 YFC LM4FS1AH / LM4FS1BH / LM4FS1EH (marking: 5BBCIG) is a System Management Controller (SMC) IC manufactured by Texas Instruments for Apple MacBook Air logic boards. This chip manages system power, battery charging, fan control, thermal sensors, keyboard response, and overall system startup stability. It is used in MacBook Air 11" A1465 and MacBook Air 13" A1466 for controlling power states like SMC_ONOFF, G3H, S5, S3, and system power rails.

• Product Name :- 980 YFC LM4FS1AH / LM4FS1BH / LM4FS1EH SMC IC
• Manufacturer :- Texas Instruments (TI)
• Marking on IC :- 5BBCIG
• Main Use :- SMC control for power, thermal, fan & battery management
• Used In :- MacBook Air 11" A1465 & MacBook Air 13" A1466
• System Role :- Power sequencing + charging + sensors + fan motor control
• Package :- BGA (Ball Grid Array)
• Board Location :- SMC section near CPU & power rails
• Stock :- Ready Stock in Nehru Place, Delhi
• Condition :- New & Properly Packed
• Warranty :- Testing Warranty Only
• Quality Test :- Verified by OKSpare Technical Team
• Note :- Reballing required by experienced technician