Texas Instruments TPS61007EVM-177, User Manual, Page: 12 / 16

Enable (EN) Jumper
2-2 Evaluation With the TPS61007EVM-177
2.1 Enable (EN) Jumper
This jumper enables the device. Connecting the EN pin to V
BAT
(i.e. setting the
jumper to EN) will enable the part.
2.2 LBI/LBO Comparator
The LBO terminal is an open drain output and has a pullup resistor, R4,
connected to the output. The signal on this pin will go low as soon as the input
voltage at LBI falls below the threshold of 500 mV. LBO will stay at high
impedance when the input voltage at LBI is above the threshold. A resistor
divider (R5, R6) is used on the EVM to monitor the supply voltage. As a default
on the EVM, the LBO output will go low when the supply voltage falls below
0.9 V. More details about setting the low battery threshold voltage can be found
in the data sheet (SLVS279).