BQ24401 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: 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.
BQ24401 Key Features
- 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