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BQ25708 Folha de dados(PDF) 34 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) 34 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
Table 10. ChargeOption1 Register (SMBus address = 30h) Field Descriptions (continued)
SMBus
BIT
FIELD
TYPE
RESET
DESCRIPTION
6
CMP_POL
R/W
0b
Independent Comparator Output Polarity
0b: When CMPIN is above internal threshold, CMPOUT is LOW (internal
hysteresis) <default at POR>
1b: When CMPIN is below internal threshold, CMPOUT is LOW (external
hysteresis)
5-4
CMP_DEG
R/W
01b
Independent Comparator Deglitch Time, only applied to the falling edge of
CMPOUT (HIGH
→ LOW).
00b: Independent comparator is disabled
01b: Independent comparator is enabled with output deglitch time 1 µs <default
at POR>
10b: Independent comparator is enabled with output deglitch time of 2 ms
11b: Independent comparator is enabled with output deglitch time of 5 sec
3
FORCE_LATCHOFF
R/W
0b
Force Power Path Off
When the independent comparator triggers, charger turns off Q1 and Q4 (same
as disable converter) so that the system is disconnected from the input source.
At the same time, CHRG_OK signal goes to LOW to notify the system.
0b: Disable this function <default at POR>
1b: Enable this function
2
Reserved
R/W
0b
Reserved
1
EN_SHIP_DCHG
R/W
0b
Discharge SRN for Shipping Mode
When this bit is 1, discharge SRN pin down below 3.8 V in 140 ms. When 140
ms is over, this bit is reset to 0.
0b: Disable shipping mode <default at POR>
1b: Enable shipping mode
0
AUTO_WAKEUP_EN
R/W
1b
Auto Wakeup Enable
When this bit is HIGH, if the battery is below minimum system voltage
(REG0x3E()), the device will automatically enable 128 mA charging current for
30 mins. When the battery is charged up above minimum system voltage, charge
will terminate and the bit is reset to LOW.
0b: Disable
1b: Enable <default at POR>



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