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BQ25708 Folha de dados(PDF) 60 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) 60 Page - Texas Instruments

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bq25708
ACN
VBUS
HIDRV1
SRN
IADPT
IBAT
PSYS
ADAPTER
VSYS
BATT
BTST1 BTST2
LODRV1
SW1
SW2
LODRV2
HIDRV2
SRP
/BATDRV
VDDA
COMP1
COMP2
SDA SCL
3.3V or 1.8V
CHRG_OK
CELL_BATPRESZ
1.05V
/PROCHOT
ACP
SYS
Host
(SMBus)
Q1
Q2
Q3
Q4
REGN
GND
ILIM_HIZ
RAC=10m:
2.2±3.3uF
1uF
REGN
10:
50:
10k:
10k:
10k:
100pF
100pF
30k:
VDDA
250k:
350k:
To CPU
47nF
47nF
6x10PF
:
1PF
6x10PF
Optional
snubber
10k:
CMPOUT
CMPIN
RSR=10m:
10nF
2.2uH
100k:
1:
470nF
15nF
15nF
10:
10:
Copyright © 2017, Texas Instruments Incorporated
60
bq25708
SLUSCU2 – NOVEMBER 2017
www.ti.com
Product Folder Links: bq25708
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
(1)
Refer to adapter specification for settings for Input Voltage and Input Current Limit.
(2)
Refer to battery specification for settings.
9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
The bq2570xEVM-732 evaluation module (EVM) is a complete charger module for evaluating the bq25708. The
application curves were taken using the bq2570xEVM-732. Refer to the EVM user's guide (SLUUBG6) for EVM
information.
9.2 Typical Application
Figure 34. Application Diagram
9.2.1 Design Requirements
DESIGN PARAMETER
EXAMPLE VALUE
Input Voltage(1)
3.5V < Adapter Voltage < 24V
Input Current Limit (1)
3.2A for 65W adapter
Battery Charge Voltage(2)
8400mV for 2s battery
Battery Charge Current(2)
3072mA for 2s battery



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