TPS65014_15 Datasheet, PDF (33/69 Pages) Texas Instruments – Power- and Battery-Management IC

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ENABLE
LOW
POWER*
LDO1
OFF/SLP*
LDO2
OFF/SLP*
MAIN
DISCHARGE*
ENABLE
SUPPLY*
LOW POWER
TPS65014
SLVS551A – DECEMBER 2004 – REVISED SEPTEMBER 2015
VMAIN
VCORE
VLDO1
VLDO2
VMAIN < ca 0.8 V
VCORE < ca 0.4 V
RESPWRON
MPU_RESET
PWRFAIL
INT
REFSYS
ENABLE*
* Internal Signal
Figure 30. State 1 to State 4 Transition
7.3.5 System Reset and Control Signals
The RESPWRON signal is used as a global reset for the application. It is an open-drain output. The
RESPWRON signal is generated according to the power good comparator linked to VMAIN and remains low for
t_n(RESPWRON) seconds after VMAIN has stabilized. When RESPWRON is low, PWRFAIL, MPU_RESET, and INT
are also held low.
If the output voltage of MAIN is less than 90% of its nominal value, as RESPWRON is generated, and if the
output voltage of MAIN is programmed to a higher value, which causes the output voltage to fall out of the 90%
window, then a RESPWRON signal is generated.
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