Technical Specifications
- Charging Current: Supports fast charging up to 3.78A.
- Efficiency: High-efficiency synchronous buck charger featuring up to 95% efficiency at 1A (5V input) and 91.4% efficiency at 2A (9V input).
- Package Type: Compact TQFN-4×4-24L (QFN24) package, optimized for space-saving layouts and thermal dissipation.
- Safety Features: Built-in over-voltage protection (OVP), over-current protection (OCP), input under-voltage lock-out (UVLO), thermal regulation, and JEITA-compliant battery temperature monitoring via an NTC thermistor pin.
- Equivalent / Alternative: Often cross-referenced or compatible in design functions with components like the BQ21120.
Common Smartphone Applications
This IC is a standard replacement component found on the motherboards of several mid-range smartphones:
- Xiaomi / Redmi: Redmi Note 9A
- Huawei: Enjoy 20
- Motorola: Moto G22, Moto G42 Premium
Symptoms a Faulty SGM41542 Causes
If this chip is damaged on a phone’s motherboard, it usually results in:
- Fake Charging: The charging icon shows up, but the battery percentage never increases.
- Slow Charging: Taking an unusually long time to charge even with a fast charger.
- No Power / No Charge: The phone fails to detect the USB cable entirely or refuses to turn on.
- Overheating: Excessive heat near the power management area of the PCB while plugged into power
Reviews
There are no reviews yet.