BQ24400 Series

Switch-mode NiCd/NiMH Battery Charger with Peak Voltage Detection Termination

Catalog

Switch-mode NiCd/NiMH Battery Charger with Peak Voltage Detection Termination

Part	Battery Chemistry	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Supply (Max) [Max]	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Programmable Features	Package / Case [custom]	Package / Case [custom]
Texas Instruments BQ24400DR	Multi-Chemistry	8-SOIC	3.9 mm	0.154 in	6 V	8-SOIC	70 °C	-20 °C	Surface Mount	Timer Voltage
Texas Instruments BQ24400DRG4	Multi-Chemistry	8-SOIC	3.9 mm	0.154 in	6 V	8-SOIC	70 °C	-20 °C	Surface Mount	Timer Voltage
Texas Instruments BQ24400PW	Multi-Chemistry	8-TSSOP			6 V	8-TSSOP	70 °C	-20 °C	Surface Mount	Timer Voltage	0.173 "	4.4 mm
Texas Instruments BQ24400D	Multi-Chemistry	8-SOIC	3.9 mm	0.154 in	6 V	8-SOIC	70 °C	-20 °C	Surface Mount	Timer Voltage
Texas Instruments BQ24400PWRG4	Multi-Chemistry	8-TSSOP			6 V	8-TSSOP	70 °C	-20 °C	Surface Mount	Timer Voltage	0.173 "	4.4 mm

Catalog

Switch-mode NiCd/NiMH Battery Charger with Peak Voltage Detection 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 Peak Voltage (PVD), 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 Peak Voltage (PVD), 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 bq24400 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 bq24400 provides these charge termination criteria: For safety, the bq24400 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, thebq24400 uses trickle-harge to condition the battery. For NiMH batteries, the bq24400 provides an optional top-off charge to maximize the battery capacity. The integrated high-speed comparator allows the bq24400 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries. The bq24400 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 bq24400 provides these charge termination criteria: For safety, the bq24400 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, thebq24400 uses trickle-harge to condition the battery. For NiMH batteries, the bq24400 provides an optional top-off charge to maximize the battery capacity. The integrated high-speed comparator allows the bq24400 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries.