SGM41524YTDC8G/TR

The SGM41524YTDC8G/TR from SG Micro Corp is a compact and efficient Lithium ion (Li+) or Lithium ion polymer (Li+/polymer) battery charger. It is designed to provide power and charge a single-cell battery in systems commonly found in compact portable devices. An internal switching buck converter regulates the input supply for charging the battery and powering the system, even when the battery is absent. This device supports constant current and constant voltage (CCCV) charging with a charge limiting timer and operates in compliance with BAJ/JEITA safety guides.

Key electrical specifications include a maximum charging current of 2.3A for 4.2V to 4.5V batteries and a switching frequency of 1.34MHz. It also features programmable charge voltage and current, and 4.15V input voltage regulation. The charger includes output voltage fold-back for charge retaining and input under-voltage regulation to maintain VIN above a minimum when the source is weak. Thermal regulation options are available for +55°C or +115°C, with a typical peak efficiency of 92% at 1.5A and VIN = 5V.

The SGM41524YTDC8G/TR operates within a temperature range of -40°C to +85°C. It is delivered in a green TDFN-2x3-8BL package, suitable for surface mount applications. The IND status output pin can be connected to LEDs to indicate operating conditions such as power input ok, charging, VIN over-voltage, and no power/disabled.