Ultra-Efficient, IQ SmartTM Battery Protection IC

GLF73910 AD01 Package View

0.97mm x 0.97mm 
0.55mm thick
0.5mm pitch
4 bump


  • Over Charge Detection Voltage, VOC
    • 4.50 VBAT
    • Monitor VBAT to release VOC
  • Over Discharge Detection Voltage, VOD : 2.80VBAT
  • Load Short Circuit Protection with Delay Time to avoid a false trigger
  • Activated by Applying VON to the VOUT Pin from
  • 1.5A Continuous Charging Current Capability from VOUT to VBAT Pin
  • Low RON : 36 mΩ Typ. @ 3.6 VBAT
  • Quiescent Current, IQ = 720 nA Typ @ 3.6 VBAT
  • Shutdown Current, ISD 70nA Typ @ VBAT < VOD
  • Latch-off at Over Discharge Detection and Short Circuit Protection. Apply VON to VOUT pin to turn on again
  • Near 0V Battery Charging
    • 0.4V Minimum Battery Voltage for Charging
  • Patent Pending Circuit Architecture
  • HBM: 8 kV, CDM: 2 kV
  • 0.97 mm x 0.97 mm x 0.55 mm Chip Scale Package 4 Bumps, 0.5 mm Pitch


  • BLE Wireless Earphone
  • Wearables / IoT Devices


GLF 71311 schematic


GLF73910 BD01 Application Diagram


The GLF73910-BD01 is an IQSmartTM ultraefficient, full battery protection switch with an accurate over charge voltage, over discharge voltage, and short circuit protection for lithiumIon/Polymer battery safety.

The over charge and discharge voltage protections keep a rechargeable battery working within the desired safe operating condition. When the battery is charged past the over voltage detection level, the GLF73910-BD01 switch opens in a preset delay time.

As the battery voltage decreases below the over discharge detection voltage level, the GLF73910-BD01 switch is turned off immediately to cut off the battery power rail, consuming an ultra-low leakage current (ISD) to save the battery. In addition, when the load current reaches the ISC short circuit protection level, the GLF73910- BD01 switch is turned off and will maintain the off state to avoid any serious damage to system. The short circuit delay time avoids any false trigger which might open the switch.

When a charged battery cell is connected, the GLF73910-BD01 remains in the off state and consumes an ultra-low leakage current (ISD) until the VON voltage is applied to VOUT pin. Note that the GLF73910-BD01 is activated only by a VON voltage from a charger output.


Explore Other GLF Products


Best In Class Efficient On/Off Power Switching for Enhanced Battery Life & System Reliability


Best In Class Efficient On/Off Power Switching with Multiple Protection Features

  • Deep Sleep/Power Reset
  • Slew Rate Control / Inrush Protection
  • Reverse Current Protection (RCB)
  • Over Current Protection (OCP)
  • Over Voltage Protection (OVP)
  • Over Temperature Protection (OTP)
  • Under Voltage Lockout (UVLO)

GLF Efuse


Best In Class Efficient Power Reset Protection



Best In Class Efficient On/Off Battery Protection Switch with Multiple Protection Features

  • Slew Rate Control / Inrush Protection
  • Accurate Threshold Voltage (Vth) Control


Best in Class, Efficient, & Simple Power Rail Switching

  • 2 Power Rails In --> 1 Power Rail Out
  • Power Source Auto Selection
  • No External Control Components Required
  • No External Control Signals Required
  • Multiple Protection Features
  • Ultra-Low ISD
  • Low IQ


Ultra-efficient IQSmartTM low dropout regulators designed for wearables and IoT devices which require ultra-low quiescent current.