Core Technical Specifications
- Component Type: Power Management IC / Voltage Regulator
- Primary Functions: LCD Backlight LED Driver and USB Charging Controller
- Package Type: Silicon BGA (Ball Grid Array) or Compact SOP (depending on board revision layout)
- Standard Supply Voltage: 5V operational baseline
- Operating Temperature Range: 0°C to 45°C
- Material Composition: Lead-free, RoHS compliant, standard high-grade silicon substrate
Key Operational Features
1. Display & Backlight Regulation
When utilized as a Display Light IC:
- Voltage Boosting: Dynamically steps up standard lithium battery voltage (~3.7V) to a boosted output threshold (~12V to 25V) required to illuminate high-density LCD background LEDs.
- Brightness Control: Integrates with the device CPU to interpret Pulse Width Modulation (PWM) signals for stable screen dimming and power scaling.
2. USB Power Delivery & Charging
When utilized as a Charging Control IC:
- Circuit Synchronization: Works paired alongside complementary chips like the
SM5450,MIW04X02, orS2MIW04X-62to balance incoming fast-charging currents. - Over-Voltage Mitigation: Provides high-performance power regulation to protect interior logic boards from fluctuating external USB adapters.
Hardware Compatibility & Cross-References
The chip is found in various configurations across major Samsung device mainboards, including:
- Flagship Devices: Samsung Galaxy S20 Ultra (
S20UVariant) - Mid-to-Budget Devices: Samsung Galaxy A10, Galaxy A10e, Galaxy A2 Core, and Galaxy A23.
Common Failure Symptoms
When this IC fails, the device typically exhibits a completely dim screen (loss of backlight), flickering display brightness, or an outright failure to accept charge/recognize USB connections. Replacing this chip requires intermediate to advanced micro-soldering tools and a hot air rework station.
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