GLF73611
Ultra-Efficient, Optimized IQSmartTM Battery Protection IC with Full Protections
0.97mm x 0.97mm
0.55mm thick
0.5mm pitch
4 bump
WLCSP
Features
- Over Charge Detection Voltage, VOC
- GLF73611A detects VOUT to release VOC
- GLF73611B detects VBAT to release VOC
- VOC high accuracy: ± 0.6 %
- Over Discharge Detection, VOD
- GLF73611A detects 2.90 VOUT
- GLF73611B detects 2.80 VBAT
- Over Charge Current Detection, IOC : 330 mA
- Over Discharge Current Detection, IOD : 215 mA
- Short Circuit Protection
- Activated by Applying VON to the VOUT Pin from Charger
- Shipping Mode Implementation
- Low RON : 60 mΩ Typ. at 3.6 VBAT
- Low Quiescent Current, IQ : 1.6 μA Typ at 3.6 VBAT
- Shutdown Current:
- ISD = 15 nA Typ. at VBAT < VOD
- ISD = 21 nA Typ. at VBAT = 3.6 V, Shipping Mode
- ISD = 26 nA Typ. at VBAT = 4.2 V, Shipping Mode
- Latch-off at Over Discharge Detection and Short Circuit Protection.
- 0 V Battery Charge Inhibition
- Patented Circuit Architecture
Applications
- BLE Wireless Earphone
- Hearing Aid
- Wearables and Smart IoT Devices
FUNCTIONAL BLOCK DIAGRAM
APPLICATION SCHEMATIC
PRODUCT DESCRIPTION
The GLF73611 is a family of IQSmartTM ultra-efficient ICs, with full battery protections which are accurate over charge/discharge voltage protection, over charge/discharge current protection and short circuit protection.
The over charge and discharge voltage protections are capable of keeping a rechargeable battery working within the desired safe operating condition. When the battery is charged above the over voltage detection level, the GLF73611 charging switches off in a preset delay time. As the battery voltage decreases lower than the over discharge detection voltage, the GLF73611 discharging switch is turned off immediately. In the off state, GLF73611 consumes an ultra-low leakage current (ISD) to save the battery power. In addition, when the load current is higher than the ISC short circuit protection current level, the GLF73611 is turned off and will maintain the off state to avoid any serious damage to system. The short circuit delay time can avoid any false trigger which might turn on the switch.
The GLF73611 provides a shipping mode to prevent smart devices which has a non-removable battery from discharging during the shipping period. When a charged battery cell is connected to the GLF73611, and GLF73611 remains in the off state, the smart devices consume an ultra-low leakage current (ISD). Note that the only way to active the GLF73611 is applying a charger output VON voltage to VOUT pin.
The GLF73611 also has 0 V battery charge inhibition function. When the battery voltage is lower than 0 V battery charging inhibited Voltage (VTC), the battery is not allowed to charge.
