BQ24401PWG4

Battery Chargers Overview

The BQ24401PWG4 is a programmable switch-mode battery charger designed for NiCd and NiMH cells. It integrates a synchronous buck converter, linear pre-charge stage, and dT/dt termination logic within an 8-pin TSSOP package. The device supports input voltages up to 6V and delivers regulated charging currents. Key electrical parameters include a typical operating supply voltage of 5V and an operational temperature range from -20°C to +70°C.

Battery Chargers Feature Summary

• Integrates synchronous step-down switching regulator with linear pre-charge capability
• Supports dT/dt thermal rate-of-change termination for safe fast-charging
• Programmable charge current and termination thresholds via external components

Battery Chargers Applications

• Portable consumer electronics requiring NiMH battery management
• Medical devices utilizing rechargeable NiCd power sources
• Industrial handheld equipment with sealed lead-acid or nickel-based batteries

Battery Chargers Procurement Notes

Verify the suffix 'G4' indicates RoHS compliance and green material status as per Texas Instruments standards. Confirm the 'PW' package code corresponds to the 8-TSSOP form factor. Ensure the specific revision matches the design requirements for thermal termination sensitivity.

Battery Chargers Selection Notes

Select this component when designing systems requiring integrated switching regulation for nickel-based chemistries. The synchronous topology improves efficiency compared to linear-only solutions. Verify that the external inductor selection aligns with the internal switching frequency specifications provided in the datasheet.

Battery Chargers Part Context

This part belongs to the BQ2440x family of battery chargers. It serves as a direct replacement for the non-RoHS BQ24401PWR variant. The device simplifies power architecture by combining switching and linear stages into a single IC, reducing component count for portable applications.

Battery Chargers Replacement Considerations

The BQ24401PWR is the non-compliant predecessor. Cross-reference with BQ24400 if lower current capabilities are sufficient. Verify pin compatibility when substituting with other members of the BQ2440x series.