SY6935 Datasheet | Silergy

Application Note:AN_SY6935 High Efficiency, 3.5A, Multi-Cell Li-Ion Battery Charger Preliminary Specification General Description Features SY6935 is a 4-14V input, 3.5A Multi-cell Li-Ion battery step-down charger. The charge current up to 3.5A can be programmed by using the external resistor for different portable applications. It also has a programmable charge timeout and adaptive input power limit for safety battery charge operation. It consists of 16V rating reverse blocking FET and power switching FETs with extremely low ON resistance to achieve high charge efficiency and simple peripheral circuit design. SY6935 along with small QFN3x3 footprint provides small PCB area application. Ordering Information SY6935 ( ) - - - - Temperature Code Package Code Optional Spec Code Ordering Number Package type Note SY6935QDC QFN3x3-16 Typical Applications CBD BD INPUT Integrated Synchronous Buck and Reverse Blocking FET with 16V Rating Adaptive Input Power Limit for 4-14V Wide Input Voltage Maximum 3.5A Programmable Charge Current 4.2V and 4.35V Constant Voltage Selectable +/-0.5% Cell Voltage Accuracy Support Single-cell or Two-cell Battery Pack External Shutdown Function Input Voltage UVLO and OVP Thermal Fold-back Protection Over Temperature Protection Battery Short Protection Programmable Charge Timeout Charge Status Indication Low Profile QFN3x3 Package for Portable Applications Applications Power bank Cellular Telephones, PDA, MP3 Players, MP4 Players PSP Game Players, NDS Game Players Notebook CBST L LX RS RS RUP RDN STAT VSEN CELL Battery Charge Control & Protection Logic SGND/ PGND R1 NTC R2...