Datasheet

Enable (EN) Jumper
2-2
Evaluation With the TPS6101xEVM-157
2.1 Enable (EN) Jumper
This jumper is used to enable the device. Connecting the EN pin to V
BAT
(i.e.
setting jumper to EN) will enable the part.
2.2 Auto Discharge Enable (ADEN) Jumper
This jumper enables the device to discharge the output capacitor after the
device is disabled by setting EN to GND. If ADEN is connected to V
BAT
(jumper
set to ADEN), the capacitors connected to V
OUT
will be discharged by an
internal switch with a resistance of 300 Ω. The discharge time depends on the
total output capacitance. The residual output voltage will be less than 0.4 V
after auto discharge.
When disabling the auto discharge function with the jumper, the output
capacitors will only be discharged by the load and/or by the leakage currents
in every connected part.
2.3 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 (SLVS314).