4 A, Slew Rate Controlled IQSmartTM Load Switch with True Reverse Current Blocking

GLF72120 package view

0.97mm x 1.47mm 
0.55mm thick
0.5mm pitch
6 bump


  • True Reverse Current Blocking
  • Ultra-Low IQ: 1.3µA Typ @ 5.5VIN
  • Ultra-Low ISD: 40nA Typ @ 5.5VIN
  • Low RON : 14mΩ Typ @ 5.5VIN
  • IOUT Max: 4A
  • Wide Input Range: 1.5V to 5.5V
  • 6V abs max
  • Controlled Rise Time: 730µs at 3.3VIN
  • Internal EN Pull-Down Resistor
  • 0.97mm x 1.47mm x 0.55mm Wafer Level Chip Scale Package


  • Smart Credit Cards
  • Thin Wearables
  • Thin Medical Portables
  • Thin Mobiles
  • Thin Battery Powered Systems


GLF72120 application schematic

The GLF72120 is an advanced technology fully integrated IQSmartTM load switch device with True Reverse Current Blocking (TRCB) technology and the slew rate control of the output voltage.

The GLF72120 offers industry leading True Reverse Current Blocking (TRCB) performance, featuring an ultra-low threshold voltage. It minimizes reverse current flow in the event that the VOUT pin voltage exceeds the VIN voltage.

The GLF72120 has industry leading efficiency. It features a RON as low as 14 mΩ typical at 5.5 V, reducing power loss during conduction. The device also features ultra-low shutdown current (ISD) to reduce power loss and battery drain in the off state. When EN is pulled low, and the output is grounded, the GLF72120 can achieve an ISD as low as 40 nA typical at 5.5 V.

The GLF72120 load switch device supports an industry leading wide input voltage range and helps to improve operating life and system robustness. Furthermore, one device can be used in multiple voltage rail applications which helps to simplify inventory management and reduces operating cost.

The GLF72120 load switch device is small utilizing a chip scale package with 6 bumps in a 0.97 mm x 1.47 mm x 0.55 mm die size and a 0.5 mm pitch.


NOTE: Spec values & feature set for "Coming Soon" and "Development" devices are provided on a best estimate basis, based on available data at time of estimate. Values are subject to change. GLF makes no warrenties that it will release or offer for sale products that are marked “Coming Soon” or “Development” "Integrated Features" Table Key: √ = Feature Included, P = Programmable Feature

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.