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BQ24401

AKTIV

Switchmode-NiCd/NiMH-Akkulader mit dT/dt-Terminierung

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Datenblatt

BQ24401

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 2 Vin (max) (V) 6 Cell chemistry NiCd, NiMH Battery charge voltage (min) (V) 0.95 Battery charge voltage (max) (V) 6 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -20 to 70
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 2 Vin (max) (V) 6 Cell chemistry NiCd, NiMH Battery charge voltage (min) (V) 0.95 Battery charge voltage (max) (V) 6 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -20 to 70
SOIC (D) 8 29.4 mm² 4.9 x 6 TSSOP (PW) 8 19.2 mm² 3 x 6.4
  • Safe Management of Fast Charge for NiCd and NiMH Battery Packs
  • High-Frequency Switching Controller for Efficient and Simple Charger Design
  • Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
  • Fast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge Time
  • Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
  • Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
  • Built-in Battery Removal and Insertion Detection
  • Sleep Mode for Low Power Consumption
  • APPLICATIONS
    • Nickel Charger
    • High-Power, Multi-Cell Charger
  • Safe Management of Fast Charge for NiCd and NiMH Battery Packs
  • High-Frequency Switching Controller for Efficient and Simple Charger Design
  • Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
  • Fast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge Time
  • Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
  • Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
  • Built-in Battery Removal and Insertion Detection
  • Sleep Mode for Low Power Consumption
  • APPLICATIONS
    • Nickel Charger
    • High-Power, Multi-Cell Charger

The bq24401 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd) and nickel metal-hydride (NiMH) in single or multi-cell applications.

The bq24401 provides these charge termination criteria:

  • Rate of temperature rise (ΔT/Δt)
  • Maximum temperature
  • Maximum charge time

For safety, the bq24401 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq24401 uses trickle-charge to condition the battery. For NiMH batteries, the bq24401 provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq24401 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries.

The bq24401 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd) and nickel metal-hydride (NiMH) in single or multi-cell applications.

The bq24401 provides these charge termination criteria:

  • Rate of temperature rise (ΔT/Δt)
  • Maximum temperature
  • Maximum charge time

For safety, the bq24401 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq24401 uses trickle-charge to condition the battery. For NiMH batteries, the bq24401 provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq24401 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet Programmable NiCd/NiMH Fast-Charge Management IC datasheet (Rev. A) 08 Mär 2010
Application note U-504 Using the bq2000/T to Control Fast Charge (Rev. B) 02 Dez 2004

Design und Entwicklung

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Gehäuse Pins Herunterladen
SOIC (D) 8 Optionen anzeigen
TSSOP (PW) 8 Optionen anzeigen
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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

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