参数资料
型号: TPS659107A1RSL
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC48
封装: 6 X 6 MM, 1 MM HEIGHT, 0.40 MM PITCH, PLASTIC, VQFN-48
文件页数: 26/93页
文件大小: 1014K
代理商: TPS659107A1RSL
SWCS046-022
VCC7
VIO
INT1
1.8V
t d32KON
NRESPWRON
t dSONT
Switch-on sequence
Interrupt aknowledge
PWRHOLD
VMBHI_IT=1
tdONVMBHI
CLK33KOUT
VMBCH threshold
VMBHI threshold
VRTC
1.8V
tdbVMBHI
VMBDCH threshold
VMBLO threshold
VBNPR threshold
tdbVMBDCH
tdbVMBLO
Switch-off sequence
VBACKUP > VBNPR
(1)
tdOINT1
PWRON
VIO
INT1
1.8 V
NRESPWRON
Interrupt acknowledge
PWRHOLD
PWRON_IT=1
CLK33KOUT
Interrupt acknowledge
Switch-off
sequence
t
tdbPWRONF
tdSONT
tdbPWRONF
tdONPWHOLD
Switch-on sequence
SWCS046-009
PWRON_IT=1
dbPWRHOLDF
tdOINT1
(1)
SWCS046I
– MARCH 2010 – REVISED JULY 2011
POWER CONTROL TIMING (continued)
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 devce Power On enable conditions is set, the supplies will be turned off after
tdOINT1 delay.
Figure 4. Device Turn-On/Off with Rising/Falling Input Voltage
Device State Control Through PWRON Signal
Figure 5 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 device POWER ON enable condition is set the supplies will be turned off after
TdOINT1 delay.
Figure 5. PWRON Turn-On/Turn-Off
Figure 6 shows the long-press turn-off timing characteristics.
32
Copyright
2010–2011, Texas Instruments Incorporated
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