BQ24401 Series

Switch-mode NiCd/NiMH battery charger with dT/dt termination

Catalog

Switch-mode NiCd/NiMH battery charger with dT/dt termination

Part	Mounting Type	Battery Chemistry	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - Supply (Max) [Max]	Programmable Features	Package / Case	Package / Case [y]	Package / Case [x]	Package / Case [custom]	Package / Case [custom]
Texas Instruments BQ24401DR	Surface Mount	Multi-Chemistry	70 °C	-20 °C	8-SOIC	6 V	Timer	8-SOIC	3.9 mm	0.154 in
Texas Instruments BQ24401PW	Surface Mount	Multi-Chemistry	70 °C	-20 °C	8-TSSOP	6 V	Timer	8-TSSOP			0.173 "	4.4 mm
Texas Instruments BQ24401PWG4	Surface Mount	Multi-Chemistry	70 °C	-20 °C	8-TSSOP	6 V	Timer	8-TSSOP			0.173 "	4.4 mm
Texas Instruments BQ24401DG4	Surface Mount	Multi-Chemistry	70 °C	-20 °C	8-SOIC	6 V	Timer	8-SOIC	3.9 mm	0.154 in

Catalog

Switch-mode NiCd/NiMH battery charger with dT/dt termination

Key Features

• Safe Management of Fast Charge for NiCd and NiMH Battery PacksHigh-Frequency Switching Controller for Efficient and Simple Charger DesignPre-Charge Qualification for Detecting Shorted, Damaged, or Overheated CellsFast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge TimeSelectable Top-Off Mode for Achieving Maximum Capacity in NiMH BatteriesProgrammable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge MaintenanceBuilt-in Battery Removal and Insertion DetectionSleep Mode for Low Power ConsumptionAPPLICATIONSNickel ChargerHigh-Power, Multi-Cell ChargerSafe Management of Fast Charge for NiCd and NiMH Battery PacksHigh-Frequency Switching Controller for Efficient and Simple Charger DesignPre-Charge Qualification for Detecting Shorted, Damaged, or Overheated CellsFast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge TimeSelectable Top-Off Mode for Achieving Maximum Capacity in NiMH BatteriesProgrammable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge MaintenanceBuilt-in Battery Removal and Insertion DetectionSleep Mode for Low Power ConsumptionAPPLICATIONSNickel ChargerHigh-Power, Multi-Cell Charger

Description

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: 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: 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.