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BQ298015

更新时间： 2024-10-29 02:44:35
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德州仪器 - TI /
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27页 2049K
描述
BQ298xyz Voltage, Current, Temperature Protectors with an Integrated High-Side NFET Driver for Fast/Flash Charging Single-Cell Li-Ion and Li-Polymer Batteries

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BQ298015 数据手册

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BQ2980, BQ2982  
SLUSCS3H – OCTOBER 2017 – REVISED JULY 2021  
BQ298xyz Voltage, Current, Temperature Protectors with an Integrated High-Side  
NFET Driver for Fast/Flash Charging Single-Cell Li-Ion and Li-Polymer Batteries  
1 Features  
3 Description  
•
Voltage protection:  
The BQ298xyz family of devices, featuring integrated  
charge-pump FET drivers, provides high-side primary  
battery cell protection for 1-series Li-ion and Li-  
Polymer batteries, enabling consistent Rdson across  
cell voltages. For better system thermal performance,  
the BQ298x device's accuracy enables the use of a  
sense resistor as low as 1 mΩ.  
– Overvoltage (OV): ±10 mV  
– Undervoltage (UV): ±20 mV  
Current protection  
– Overcurrent in charge (OCC): ±1 mV  
– Overcurrent in discharge (OCD): ±1 mV  
– Short circuit in discharge (SCD): ±5 mV  
Temperature protection:  
– Overtemperature (OT)  
Additional features:  
– Supports as low as a 1-mΩ sense resistor  
•
•
•
The CTR pin in the BQ298x device can be configured  
to override the FET driver by host control to create a  
system reset or shutdown function. Alternatively, the  
CTR pin can be configured to connect an external  
Positive Temperature Coefficient (PTC) thermistor for  
FET OT protection in addition to the internal die  
temperature sensor. The BQ2980xy devices support  
zero-volt (0-V) charging, while the BQ2982xy devices  
have this disabled.  
(RSNS  
)
– High-side protection  
– High Vgs FET drive  
– 0-V charging (only BQ2980)  
– CTR pin for FET override control for system  
reset/shutdown  
– Configure CTR for second OT protection  
through an external PTC thermistor  
Current consumption:  
– NORMAL mode: 4 µA  
– SHUTDOWN mode: 0.1-µA maximum  
Package:  
Device Information  
PART  
PACKAGE  
BODY SIZE (NOM)  
NUMBER(1)  
•
•
BQ2980xy  
X2QFN  
X2QFN  
1.50 mm × 1.50 mm × 0.37 mm  
1.50 mm × 1.50 mm × 0.37 mm  
BQ2982xy  
(1) For all available packages, see the orderable addendum and  
Device Comparison Table.  
– 8-pin X2QFN: 1.50 × 1.50 × 0.37 mm  
PACK+  
2 Applications  
Option to configure for PTC protection  
R
VDD  
R
BAT  
R
PACK  
•
•
•
•
Smartphones  
Tablets  
Power bank  
Wearables  
CTR  
VSS  
BAT  
CHG  
VDD  
VSS  
CS  
DSG  
PACK  
CTR  
PACK–  
R
CTR  
System  
Reset  
C
VDD  
Scale RC values for  
system reset timing  
PACK–  
R
SNS  
Simplified Schematic  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION  
DATA.  
 
 
 
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