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BQ25708 Folha de dados(PDF) 16 Page - Texas Instruments

Nome de Peças BQ25708
Descrição Electrónicos  bq25708 SMBus Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor
PDF  77 Pages
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Fabricante Electrônico  TI2 [Texas Instruments]
Página de início  https://www.ti.com
Logo TI2 - Texas Instruments

BQ25708 Folha de dados(HTML) 16 Page - Texas Instruments

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bq25708
SLUSCU2 – NOVEMBER 2017
www.ti.com
Product Folder Links: bq25708
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Copyright © 2017, Texas Instruments Incorporated
(1)
Devices participating in a transfer will timeout when any clock low exceeds the 25ms minimum timeout period. Devices that have
detected a timeout condition must reset the communication no later than the 35 ms maximum timeout period. Both a master and a slave
must adhere to the maximum value specified as it incorporates the cumulative stretch limit for both a master (10 ms) and a slave (25
ms).
(2)
User can adjust threshold via SMBus ChargeOption() REG0x12.
7.6 Timing Requirements
MIN
TYP
MAX
UNIT
SMBus TIMING CHARACTERISTICS
tr
SCLK/SDATA rise time
1
µs
tf
SCLK/SDATA fall time
300
ns
tW(H)
SCLK pulse width high
4
50
µs
tW(L)
SCLK Pulse Width Low
4.7
µs
tSU(STA)
Setup time for START condition
4.7
µs
tH(STA)
START condition hold time after which first clock pulse is generated
4
µs
tSU(DAT)
Data setup time
250
µs
tH(DTA)
Data hold time
300
µs
tSU(STOP)
Setup time for STOP condition
4
µs
t(BUF)
Bus free time between START and STOP condition
4.7
µs
FS(CL)
Clock Frequency
10
100
KHz
HOST COMMUNICATION FAILURE
ttimeout
SMBus bus release timeout(1)
25
35
ms
tBOOT
Deglitch for watchdog reset signal
10
ms
tWDI
Watchdog timeout period, ChargeOption() bit [14:13] = 01(2)
35
44
53
s
Watchdog timeout period, ChargeOption() bit [14:13] = 10 (2)
70
88
105
s
Watchdog timeout period, ChargeOption() bit [14:13] = 11 (2) (default)
140
175
210
s



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