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LP87702 Datasheet(PDF) 27 Page - Texas Instruments

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No. de pieza LP87702
Descripción Electrónicos  LP87702 Dual Buck Converter and 5-V Boost With Diagnostic Functions
PDF  98 Pages
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

LP87702 Datasheet(HTML) 27 Page - Texas Instruments

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background image
Long Open
Close
Open
WD Reset
Increase Reset Counter value,
WDI Rising
CloseTime Expired
WDI Rising
WDI Rising
LongOpenTime Expired
OpenTime Expired
Shutdown
Sequence
WD_RESET output
active for (7.5ms +10ms)
or (15ms+10ms)
Read OTP
Stop
WD_EN_OTP_READ = 0
WD_EN_OTP_READ = 1
WD_SYS_RESTART_FLAG_MODE = 1
Restart Disabled OR
Reset Counter < Counter Select
Restart Enabled AND
Reset Counter >= Counter Select
I2C Writing to WD Control Register
(from all states except Stop)
Release ENx
pin gating
Shutdown
NRST low OR
VANA < VANA_UVLO
NRST high AND
VANA > VANA_UVLO
(WD_SYSTEM_RESTART_FLAG = 0
OR
WD_SYSTEM_RESTART_FLAG_MODE = 0)
AND
WD_EN_OTP_READ = 1
(WD_SYSTEM_RESTART_FLAG = 0
OR
WD_SYSTEM_RESTART_FLAG_MODE = 0)
AND
WD_EN_OTP_READ = 0
WD_RESET output
active for 10ms
Set
WD_SYSTEM_
RESTART_FLAG = 1
Figure 7-8. Watchdog Operation
www.ti.com
LP87702
SNVSBU3 – MARCH 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: LP87702



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