SY7658 is a single-chip IC specially designed for Bluetooth earbuds charging cases, highly integrating charging module, LED Driver and synchronous boost output, minimizing the peripheral circuits and components, and providing the simplest low-cost solution for the applications of Bluetooth earbuds charging cases. SY7658 is available in a ESOP8 package.
Features
Linear charging, synchronous boost output, built-in charge & discharge power MOSFETs
0.5A default charging current, 0.2A selectable
C/10 charge termination and automatic recharging
Adaptive adapter voltage, VINDPM: 4.6 V
Preset 4.2V charge voltage with ±1% accuracy
Charge-discharge synchronization
0.5A synchronous boost output current
Discharge constant output, no-load power loss: 60uA
Over-current, short-circuit, over-voltage and over-temperature protections during the discharge output
2-4 LEDs for battery status and charge/discharge indication
Click KEY to turn on/off the boost output
Typical Application Circuit Diagram
Applications
TWS Cradle charging cases
Portable lithium battery
Charge/discharge applications of small-capacity lithium batteries
SY7658 