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Akkuschutz

BQ2980

AKTIV

Highside-Protektor für einzellige Li-Ion- und Li-Polymer-Akkus

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Datenblatt

BQ2980

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Function Protection Number of series cells (min) 1 Number of series cells (max) 1 Features FET drive, High-side FET drive, Over-temperature (OT), Overcurrent during charge (OCC), Overcurrent during discharge (OCD), Overvoltage, Short-circuit Discharge (SCD), Undervoltage Operating current (typ) (µA) 5 Rating Catalog Vin (max) (V) 5.5 Overvoltage protection 4.3, 4.4, 4.425, 4.44, 4.475, 4.5 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.75 Battery overvoltage protection (max) (V) 5.2
Function Protection Number of series cells (min) 1 Number of series cells (max) 1 Features FET drive, High-side FET drive, Over-temperature (OT), Overcurrent during charge (OCC), Overcurrent during discharge (OCD), Overvoltage, Short-circuit Discharge (SCD), Undervoltage Operating current (typ) (µA) 5 Rating Catalog Vin (max) (V) 5.5 Overvoltage protection 4.3, 4.4, 4.425, 4.44, 4.475, 4.5 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.75 Battery overvoltage protection (max) (V) 5.2
X2QFN (RUG) 8 2.25 mm² 1.5 x 1.5
  • Voltage protection:
    • 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 (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:
    • 8-pin X2QFN: 1.50 × 1.50 × 0.37 mm
  • Voltage protection:
    • 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 (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:
    • 8-pin X2QFN: 1.50 × 1.50 × 0.37 mm

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.

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.

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.

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.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ298xyz Voltage, Current, Temperature Protectors with an Integrated High-Side NFET Driver for Fast/Flash Charging Single-Cell Li-Ion and Li-Polymer Batteries datasheet (Rev. J) PDF | HTML 19 Dez 2022
EVM User's guide BQ2980EVM-883 Evaluation Module for BQ2980 High-Side Driver 11 Mai 2017

Design und Entwicklung

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Evaluierungsplatine

BQ2980EVM-883 — bq2980 Einzelzellen-Highside-Schutz – Evaluierungsmodul

The BQ2980EVM-883 evaluation module (EVM) is to evaluate the BQ2980 family of high-side protectors. The BQ2980EVM-883 demonstrates the performance of the BQ2980 family in fast charging and high current application as high as 8 A of continuous current. The BQ2980EVM-883 is ideal for evaluation in (...)

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