BQ24401 Programmable NiCd/NiMH Fast-Charge Management

BQ24401 Programmable NiCd/NiMH Fast-Charge Management

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 t.

Features

1
• 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 C.