What It Is

The 2SES01FA is cross-referenced to the TX4056C, a linear Li-ion/Li-polymer battery charge management IC. This chip is a single-cell lithium battery charger controller, commonly used in USB-powered charging circuits.

Key Specifications

• Calibrated for standard Li-ion/Li-polymer cells with a 4.2V float (full-charge) voltage 
• Operating temperature range: -40°C to +85°C
• Not AEC-Q100 automotive qualified — intended for consumer electronics, not automotive use
• Package: SOP-8 surface-mount

What It's Used For

This IC manages the charging process for a single-cell lithium battery — regulating charge current and voltage safely from a USB or DC input, commonly found in:

• Power banks
• Bluetooth speakers/earbuds
• Small rechargeable gadgets
• Battery-powered consumer electronics

Package Includes

• 1 × 2SES01FA Li-Ion Charger IC (SOP-8)