GENERAL DEscriptION

The SGM41522, SGM41522A and SGM41522B are compact switch standalone battery chargers for single-cell Li-Ion or Li-polymer battery. They are featured with resistor programmable maximum charge current, ordering selections of preset end of charge current and pre-charge current and floating time out. The SGM41522, SGM41522A and SGM41522B also have other safety features, such as over-voltage and over-current protections, fold-back retaining, input under-voltage lockout, battery temperature monitoring and thermal shutdown. These features ensure safe and reliable operation, ease of design and a comfortable user experience.

The SGM41522, SGM41522A and SGM41522B are available in a Green TDFN-2×3-8BL package. They operate over an ambient temperature range of -40℃ to +85℃.

FEATURES

• Maximum 2.5A Charging for 4.1V to 4.45V Battery

• 1.33MHz Switch Frequency

• Up to 95.4% Charge Efficiency

• 92.8% Charge Efficiency at 1.5A from 5V Input

• 90.1% Charge Efficiency at 1.5A from 9V Input

• Charging Voltage and Current Programmable

• CC/CV Interface for Charge Current and Battery Voltage Settings

• 4.2V Input Voltage Regulation

• 4.2V to 12V Operating Input Voltage Range

• Up to 18V Sustainable Voltage

• 13.5V Over-Voltage Protection with 100ns Turn-Off Timer

• Output Voltage Fold-Back Retaining

• JEITA Guideline Compliance

  T2 Threshold 10℃

  Charge Prohibited when > T3

• -40℃ to +85℃ Operating Temperature Range

• Available in a Green TDFN-2×3-8BL Package

APPLICATIONS

Portable Audio Speaker

Mobile Phone

Wearables   

EPOS