Produktdetails

Number of series cells 1 Charge current (max) (A) 0.5 Vin (max) (V) 13.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.1 Battery charge voltage (max) (V) 4.1 Absolute max Vin (max) (V) 16.5 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 2.8 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 0.5 Vin (max) (V) 13.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.1 Battery charge voltage (max) (V) 4.1 Absolute max Vin (max) (V) 16.5 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 2.8 Rating Catalog Operating temperature range (°C) -40 to 85
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9
  • Designed Specifically to Work With Current-Limited Wall Supplies
  • Ideal for Low Dropout Charger Design for Single-Cell Li-Ion Packs With Coke or Graphite Anodes
  • Integrated PowerFET for 500 mA
  • Integrated Voltage Regulation With 0.5% Accuracy
  • Battery Insertion and Removal Detection
  • Charge Termination by Minimum Current and Time
  • Pre-Charge Conditioning With Safety Timer
  • Sleep Mode for Low-Power Consumption
  • Charge Status Output for LED or Host Processor Interface Indicates
  • Charge-in-Progress, Charge Completion, and Fault Conditions
  • Optional Temperature Monitoring Before and During Charge
  • Small, 8-Pin Power-Pad MSOP Package

  • Designed Specifically to Work With Current-Limited Wall Supplies
  • Ideal for Low Dropout Charger Design for Single-Cell Li-Ion Packs With Coke or Graphite Anodes
  • Integrated PowerFET for 500 mA
  • Integrated Voltage Regulation With 0.5% Accuracy
  • Battery Insertion and Removal Detection
  • Charge Termination by Minimum Current and Time
  • Pre-Charge Conditioning With Safety Timer
  • Sleep Mode for Low-Power Consumption
  • Charge Status Output for LED or Host Processor Interface Indicates
  • Charge-in-Progress, Charge Completion, and Fault Conditions
  • Optional Temperature Monitoring Before and During Charge
  • Small, 8-Pin Power-Pad MSOP Package

The bq2420x series are simple Li-Ion linear charge management devices targeted at low-cost and space limited charger applications. The bq2420x series offer integrated powerFET, high-accuracy voltage regulation, temperature monitoring, charge status, and charge termination, in a single monolithic device.

The bq2420x is designed to work with a current-limited wall-mount transformer and therefore does not provide any current regulation. However, these devices offer a fixed internal current limit to prevent damage to the internal powerFET. A time-limited pre-conditioning phase is provided to condition deeply discharged cells. Once the battery reaches the charge voltage, the high accuracy voltage regulation loop takes over and completes the charge cycle. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination.

Other standard features include an automatic sleep mode activated when VCC falls below the battery voltage falls below the VRCH threshold.

In addition to the standard features, the core product provides two additional enhancements: temperature monitoring and status display. The temperaturesense circuit continuously measures battery temperature using an external thermistor and inhibits charge until the battery temperature is within the user-defined thresholds. The STAT pin indicates three conditions of operation of the charger. These conditions are charge-in-progress, charge complete, and fault. This output can be used to drive an LED or an interface to a microcontroller.

The bq2420x series are simple Li-Ion linear charge management devices targeted at low-cost and space limited charger applications. The bq2420x series offer integrated powerFET, high-accuracy voltage regulation, temperature monitoring, charge status, and charge termination, in a single monolithic device.

The bq2420x is designed to work with a current-limited wall-mount transformer and therefore does not provide any current regulation. However, these devices offer a fixed internal current limit to prevent damage to the internal powerFET. A time-limited pre-conditioning phase is provided to condition deeply discharged cells. Once the battery reaches the charge voltage, the high accuracy voltage regulation loop takes over and completes the charge cycle. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination.

Other standard features include an automatic sleep mode activated when VCC falls below the battery voltage falls below the VRCH threshold.

In addition to the standard features, the core product provides two additional enhancements: temperature monitoring and status display. The temperaturesense circuit continuously measures battery temperature using an external thermistor and inhibits charge until the battery temperature is within the user-defined thresholds. The STAT pin indicates three conditions of operation of the charger. These conditions are charge-in-progress, charge complete, and fault. This output can be used to drive an LED or an interface to a microcontroller.

Herunterladen Video mit Transkript ansehen Video

Technische Dokumentation

star =Von TI ausgewählte Top-Empfehlungen für dieses Produkt
Keine Ergebnisse gefunden. Bitte geben Sie einen anderen Begriff ein und versuchen Sie es erneut.
Alle anzeigen 3
Typ Titel Datum
* Data sheet Single-Chip Li-Ion & Li_Pol Charge Mgmt IC for Current-Limited Application datasheet (Rev. C) 19 Mär 2008
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
User guide bq2420x Single-Chip Li-Ion/Li-Pol Charge Management IC for Current-Limited Appli 10 Dez 2001

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

GUI für Evaluierungsmodul (EVM)

SLVC024 bq24715 EVM GUI Package

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
Batterielader-ICs
BQ2000 Switchmode-Batterielader für verschiedene chemische Zusammensetzungen mit Spitzenspannungserkennung- BQ2000T Switchmode-Batterielader für mehrere chemische Zusammensetzungen mit dT/dt-Terminierung BQ2002 NiCd/NiMH-Laderegler mit negativem DV, PVT und Aufladezeit-Setup1 BQ2002C NiCd/NiMH-Batterie-Laderegler mit negativem DV, PVT BQ2002D Batterieladeregler für NiCd/NiMH mit dT/dt-Terminierung BQ2002E NiCd/NiMH-Batterieladeregler mit negativem dV, PVT und tMTO setup1 BQ2002F NiCd/NiMH-Batterie-Laderegler mit negativem DV, PVT und Aufladezeit setup2 BQ2002G NiCd/NiMH-Batterieladeregler mit negativem dV, PVT und tMTO setup2 BQ2002T NiCd/NiMH-Batterieladeregler mit dT/dt-Abschluss und Niedertemperaturfehler BQ2031 Switchmode-Bleisäurelader mit vom Benutzer auswählbaren Ladealgorithmen BQ2057C Linearer Li-Ion-Low-Dropout-Batterieladeregler, 1 Zellen mit AutoCompTM, 4,2V BQ24010 Einzelliger linearer 1-A-Li-Ion-Akkulader, mit AC-Erkennung und Temperaturerfassung in einem QFN-11- BQ24012 Lineares 1-Zellen-1-A-Li-Ion-Akkuladegerät mit FET, AC-Present- und Ladeaktivierung in einem QFN-12- BQ24013 Einzelliger linearer 1-A-Li-Ion-Akkulader, mit Lade- und Term.-Aktivierung in einem QFN-11-Gehäuse BQ24200 500-mA-, 4,2-V-Li-Ion-Ladegerät für strombegrenzte Anw. mit Temperaturerfassung in einem MSOP-8-Gehä BQ24201 500-mA-, 4,1-V-Li-Ion-Ladegerät für strombegrenzte Anw. mit Temperaturerfassung in einem MSOP-8-Gehä BQ24202 500-mA-, 4,2-V-Li-Ion-Ladegerät für strombegrenzte Anw. mit Ladestatus in einem MSOP-8-Gehäuse BQ24203 500-mA-, 4,1-V-Li-Ion-Ladegerät für strombegrenzte Anw. mit Ladezustand in einem MSOP-8-Gehäuse BQ24205 500-mA-, 4,1-V-Li-Ion-Ladegerät für strombegrenzte Anw. im MSOP-8-Gehäuse BQ24715 SMBus 2–3-Zellen-NVDC-Abwärts-Batterieladeregler mit N-Kanal-MOSFET-Selektoren
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HVSSOP (DGN) 8 Ultra Librarian

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

Support und Schulungen

TI E2E™-Foren mit technischem Support von TI-Ingenieuren

Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.

Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support. ​​​​​​​​​​​​​​

Videos