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SY7658 Sample Application
General Description

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

Other low-power supply applications