SY6908QDC数据手册Silergy中文资料规格书

描述 Description

SY6908 is a 5V adapter input with up to 18V surge bidirectional regulator designed for single cell Li-Ion battery power bank application. Advanced bidirectional energy flow control with automatic input power source detection is adopted to achieve battery charging mode and battery power supply mode alternately.\r
\r
SY6908 also integrated the KEY control and simple fuel gauge LEDs indicator. It can also drive a torch LED with up to 200mA current.\r
\r
SY6908 is available in QFN3x3 package to minimize the PCB layout size for wide portable applications.\r

特性 Features

• Maximum 18V input voltage surge\r
• Adapter detection\r
• Build in power path NFETs and Power Switches\r
• 600KHz switching frequency operation\r
• Trickle Current / Constant Current / Constant Voltage Charge Mode with internal compensation\r
• Maximum 2A Constant Charge Current\r
• Maximum 2.5A Boost output current\r
• 4.2V +/-0.5% accuracy battery cell voltage\r
• 4 LEDs battery level indicator\r
• Support up to 200mA torch LED\r
• Key controls logic\r
• Boost auto start when portable device inserts\r
• Boost auto shutdown with light load\r
• Adaptive input current limit\r
• Dynamic Power Management\r
• Cycle-by-Cycle peak current limitation\r
• Input Voltage UVLO and OVP\r
• Boost output Short Circuit Protection\r
• Thermal shutdown \r

应用 Application

• 1-Cell Power Bank\r
• Portable Device with 1-Cell Battery\r