GD30WS8662DY

Features

 Extreme low quiescent current, 6.5uA in discharge mode

 200nA shipping mode

 Charging features

– Charging up to 456mA, programmable via I2C

– Full charge cycle: pre-charge, constant current,constant voltage, charge done and

auto-recharge

– Pre-charging current and termination current programmable via I2C

– Support variety of battery chemistries, 3.6V~4.54V can be programmabled via I2C

– High charge voltage accuracy +/-0.5%

 Power path management

– Power path management allows simultaneous battery charging and system supply

– Dynamic balance of current to charge battery and to the system

– Over voltage protection up to 32V and over current protection @1.7A

 Protection features

– Input Over Voltage/Current Protection

– Short Circuit Protection

– Over/Under temperature protection

– Overvoltage (OV) during charge

– Undervoltage (UV) when charge/discharge

 Additional features

– Simple I

2C compatible interface

– LDO support 50mA

– WLCSP-9 compact package with low external component count

2 Applications

 TWS earbuds charging case

 Headsets and hearing aids

 Low battery applications such as smart watches and fitness accessories

 Patient monitors and portable medical equipment

General description

The GD30WS8662x is a highly integrated Li-ion charger IC for wearable and IoT applications. 

The IC integrates a high accuracy linear charger of programmable charging current (up to 

456mA). The device also includes power path management and high input protection 

functions. A low quiescent current, low noise LDO capable of delivering 50mA load current is 

also implemented internally.

The device integrates advanced power path management and control that allows the device 

to provide power to the system while charging the battery even with poor adapters. The 

dynamic power path management is able to automatically balance the currents delivered to 

the system and battery charging. A high voltage and over current protection circuit is 

implemented in the IC to protect it from high input voltage as high as 32V.

The GD30WS8662x device supports charge current up to 456mA and supports termination 

current down to 1mA. The maximum charge current is set at a default of 128mA and is 

programmable via I

2C. The battery is charged using a standard Li-Ion charge profile with three 

phases: pre-charge, constant current and constant voltage regulation.

The device has several power saving modes to increase battery life whether the product is in 

storage or in operation.

The versatile features of GD30WS8662x allow for it to best used in wearable applications 

such as headsets, earbuds and hearing aids, or low battery applications such as smart 

watches and fitness accessories, or patient monitors and portable medical equipment.

The GD30WS8662x is available in a compact WLCSP-9 1.75mmx1.75mm package.