SLVU081A February 2003 – July 2021 TPS62050 , TPS62051 , TPS62052 , TPS62054 , TPS62056
The LBO pin is an open drain output which goes low when the voltage at the low battery input (LBI) falls below the trip point of 1.21 V. An external pullup resistor which is placed between LBO and Vout is required to use the LBO.