Datasheet
PWRON
VIO
INT1
1.8 V
NRESPWRON
Interrupt acknowledge
PWRHOLD
PWRON_IT=1
CLK33KOUT
Interrupt acknowledge
Switch-off
sequence
t
t
dbPWRONF
t
dSONT
t
dbPWRONF
t
dONPWHOLD
Switch-on sequence
SWCS046-009
PWRON_IT=1
dbPWRHOLDF
t
dOINT1
(1)
SWCS046-022
VCC7
VIO
INT1
1.8V
t
d32KON
NRESPWRON
t
dSONT
Switch-on sequence
Interrupt aknowledge
PWRHOLD
VMBHI_IT=1
t
dONVMBHI
CLK33KOUT
VMBCH threshold
VMBHI threshold
VRTC
1.8V
t
dbVMBHI
VMBDCH threshold
VMBLO threshold
VBNPR threshold
t
dbVMBDCH
t
dbVMBLO
Switch-off sequence
VBACKUP > VBNPR
(1)
t
dOINT1
TPS65910
,
TPS65910A
,
TPS65910A3
,
TPS659101
TPS659102
,
TPS659103
,
TPS659104
,
TPS659105
TPS659106, TPS659107, TPS659108, TPS659109
SWCS046U –MARCH 2010–REVISED JUNE 2014
www.ti.com
5.22.2 Power Control Timing
5.22.2.1 Device Turn-On/Off With Rising/Falling Input Voltage
Figure 5-3 shows the device turn-on/-off with rising/falling input voltage.
NOTE: (1) The DEV_ON control bit (set to 1) or the PWRHOLD signal (set high) can be used to maintain supplies on after
the switch-on sequence. If none of these devices Power-on enable conditions are set, the supplies will be turned off
after t
dOINT1
delay.
Figure 5-3. Device Turn-On/Off with Rising/Falling Input Voltage
5.22.2.2 Device State Control Through PWRON Signal
Figure 5-4 shows the device state control through PWRON signal.
NOTE: (1) The DEV_ON control bit (set to 1) or the PWRHOLD signal (set high) can be used to maintain supplies on after
switch-on sequence, If none of these devices POWER-ON enable condition are set the supplies will be turned off
after T
dOINT1
delay.
Figure 5-4. PWRON Turn-On/Turn-Off
40 Specifications Copyright © 2010–2014, Texas Instruments Incorporated
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TPS659105 TPS659106 TPS659107 TPS659108 TPS659109